UnitedHealthcare Customer Service: Claims & Appeals Help

UnitedHealthcare members may need help with a denied claim, incorrect medical bill, prior authorization, provider-network question, prescription problem, missing member ID card, Medicare benefit, Medicaid coverage, premium payment, appeal, or inaccessible online account.

The correct UnitedHealthcare customer-service number depends on the member’s plan, state, employer, and type of coverage. Existing members should generally call the number printed on the back of their current member ID card because it connects them with the department responsible for their specific benefits.

UnitedHealthcare contact information reviewed and updated in June 2026.

How To Contact UnitedHealthcare Customer Service

• General Member Help Without an ID Card: 1-866-414-1959
• Plans Through an Employer: 1-866-801-4409
• UnitedHealthcare Medicare Plans: 1-844-812-5967
• Medicare Supplement Plans: 1-800-523-5800
• UnitedHealthcare Community Plan and Medicaid: 1-800-421-6204
• Report Health Care Fraud or Abuse: 1-844-359-7736
• TTY and Relay Service: Dial 711
• UnitedHealthcare Contact Page: Choose the correct plan and department
• UnitedHealthcare Member Account: Sign in to view claims, benefits and ID cards
• UnitedHealthcare Member Resources: Find forms, claims and plan tools
• Medicare Member Resources: Access UCard and Medicare plan information
• Community Plan Member Login: Manage a Medicaid or Community Plan account
• File an Appeal or Grievance: UnitedHealthcare appeal and grievance form
• Parent Company Headquarters: UnitedHealth Group Center, 9900 Bren Road East, Minnetonka, MN 55343
• Corporate Main Telephone: 1-952-936-1300
• Website: www.uhc.com

Important: The corporate main telephone number is not the normal route for claims, prior authorization, pharmacy problems, Medicare benefits, Medicaid services, or member-account questions.

UnitedHealthcare does not publish one universal email address for all member-service issues. Members are generally directed to telephone support, secure online chat, their plan website, or a plan-specific appeal or grievance form.

Use the Number on Your UnitedHealthcare ID Card

UnitedHealthcare administers many different types of insurance plans, including:

• Employer-sponsored health plans
• Individual and family plans
• Affordable Care Act Marketplace plans
• Medicare Advantage plans
• Medicare Part D prescription plans
• Medicare Supplement plans
• Medicaid and Children’s Health Insurance Program plans
• Dual Medicare-Medicaid plans
• Short-term medical plans
• Student health plans
• Dental and vision coverage
• Behavioral-health benefits

Each plan can have different telephone numbers, operating hours, provider networks, pharmacy administrators, claims addresses, prior-authorization rules, appeal deadlines, and grievance procedures.

The member ID card should identify:

• Member Services
• Provider Services
• Pharmacy or prescription support
• Behavioral-health support
• Prior-authorization contacts
• The claims mailing address
• The plan or group number

UnitedHealthcare Customer Service Hours

Customer-service hours vary by plan.

• General help without an ID card: UnitedHealthcare currently lists 1-866-414-1959 as available Monday through Friday from 8:00 a.m. to 10:00 p.m. Eastern Time.
• Medicare plans: General Medicare support is generally listed from 8:00 a.m. to 8:00 p.m. local time, seven days a week.
• Medicaid and Community Plans: Hours vary by state and plan.
• Employer plans: Hours vary by employer group and benefit administrator.

Members can sign in to their online accounts or use the UnitedHealthcare app outside telephone-support hours to view claims, find providers, check benefits, access digital ID cards, and complete certain account tasks.

Choose the Correct UnitedHealthcare Support Route

• Employer-sponsored plan: Call the ID-card number or 1-866-801-4409.
• Individual or family plan: Use UnitedHealthcare’s contact page to select the member’s state and plan.
• Medicare Advantage or Part D plan: Call the number on the UCard or member ID card.
• Medicare Supplement plan: Call 1-800-523-5800.
• Medicaid or Community Plan: Use the state-specific number on the ID card or call 1-800-421-6204.
• Claim or medical bill: Call Member Services and provide the claim number, date of service and provider information.
• Prescription claim: Call the pharmacy number printed on the member or prescription card.
• Prior authorization: Contact Member Services and the treating provider.
• Behavioral-health benefit: Use the mental-health or Optum number on the ID card.
• Suspected fraud: Call 1-844-359-7736.

Information To Gather Before Contacting UnitedHealthcare

• The member ID number
• The group, policy or employer number
• The patient’s name and date of birth
• The current member ID card
• The claim or authorization number
• The date of service
• The provider or facility name
• The billed amount
• The explanation of benefits
• The provider’s medical bill
• The denial or adverse-benefit notice
• The prescription name and pharmacy rejection message
• The appeal or grievance deadline
• Previous UnitedHealthcare case numbers
• The specific resolution being requested

Do not publish member ID numbers, claim numbers, diagnoses, Social Security numbers, medical records, payment information, or other private health information in a public review.

Common Reasons Members Contact UnitedHealthcare

• Medical claim denied or processed incorrectly
• Provider shown as out of network
• Prior authorization delayed or denied
• Medical bill does not match the explanation of benefits
• Deductible, copayment or coinsurance appears incorrect
• Coverage or eligibility problem
• Missing member ID card
• Unable to sign in to the member website
• Prescription not covered
• Pharmacy prior authorization problem
• Medicare UCard or benefit problem
• Medicaid transportation or benefit problem
• Premium payment or billing issue
• Appeal or grievance status
• Provider-directory information appears incorrect
• Suspected health care fraud

How To Review a UnitedHealthcare Claim

An explanation of benefits, commonly called an EOB, is not necessarily a bill. It explains how UnitedHealthcare processed a medical, dental, vision or behavioral-health claim.

An EOB may show:

• The provider’s original charge
• The plan’s negotiated or allowed amount
• The amount UnitedHealthcare paid
• The amount applied to the deductible
• The member’s copayment or coinsurance
• Amounts listed as not covered
• Claim-adjustment or denial codes
• The amount the member may owe

Before Paying a Provider Bill

1. Compare the bill with the UnitedHealthcare EOB.
2. Confirm the patient and date of service.
3. Check whether the provider was processed as in network.
4. Review the deductible and coinsurance amounts.
5. Look for denial or adjustment codes.
6. Confirm whether prior authorization was required.
7. Check whether another insurance plan was listed as primary.
8. Contact UnitedHealthcare and the provider when the documents do not match.

Ask the UnitedHealthcare representative to explain every disputed code and the plan provision used to process the claim. Record the representative’s name or identification number and the call-reference number.

Common Reasons UnitedHealthcare May Deny a Claim

• The service is excluded by the plan
• Prior authorization was required
• A referral was required
• The provider was outside the plan network
• The claim contained incomplete or incorrect information
• The provider used an incorrect billing code
• The claim was filed after the deadline
• The member was shown as ineligible
• The service was considered not medically necessary
• The treatment was considered experimental or investigational
• A benefit limit was reached
• Another health plan was considered primary
• The service did not match the approved authorization

A denied claim does not always mean that the member must immediately pay the full provider charge. Contact UnitedHealthcare and ask the provider whether the claim can be corrected or whether additional medical records are needed.

How To Appeal a UnitedHealthcare Claim Denial

An appeal is a request for UnitedHealthcare to reconsider a denial of coverage, authorization, or claim payment. A grievance generally concerns service quality, delays, customer service, access to care, or another complaint that is not limited to a coverage decision.

Steps To File an Appeal

1. Read the complete denial or adverse-benefit notice.
2. Identify the exact reason for the decision.
3. Locate the appeal deadline.
4. Call the number on the member ID card.
5. Ask whether the issue can be corrected without a formal appeal.
6. Request the denial code and plan provision involved.
7. Ask what records or clinical information are missing.
8. Gather medical records, provider letters, authorizations and plan documents.
9. Submit the appeal using the method listed in the denial notice.
10. Keep proof of submission.
11. Record the expected decision date.
12. Review external appeal rights if the internal appeal is unsuccessful.

Appeal deadlines depend on the plan. Medicare appeals frequently use a 60-calendar-day deadline, while employer-sponsored and commercial plan deadlines may differ. Always follow the deadline printed in the member’s actual denial notice.

Information That May Support an Appeal

• The denial notice
• The member and claim information
• A written explanation of why the decision should be changed
• Medical records
• A letter of medical necessity
• Professional treatment guidelines
• Prior-authorization records
• Provider correspondence
• Relevant plan or policy language
• Bills and receipts
• Previous case numbers

Use the appeal address, fax number, portal or form listed in the denial notice. Mailing an appeal only to UnitedHealth Group’s corporate headquarters may delay the matter and may not satisfy the plan’s deadline.

Urgent UnitedHealthcare Appeals

An expedited review may be available when waiting for a standard appeal could seriously jeopardize the patient’s life, health, ability to regain maximum function, or ability to manage severe pain.

Ask the treating provider to contact UnitedHealthcare and explain why expedited review is medically necessary. Follow the urgent-review instructions in the denial letter or plan document.

For a medical emergency, call 911 or seek emergency care. For a mental-health or suicide crisis in the United States, call or text 988.

UnitedHealthcare Prior Authorization Problems

Some medical procedures, prescriptions, imaging services, equipment, surgeries and treatments require prior authorization.

Before a Scheduled Procedure

• Ask UnitedHealthcare whether authorization is required.
• Confirm who must submit the request.
• Ask the provider whether the request was submitted.
• Request the authorization or reference number.
• Confirm that the exact service was approved.
• Confirm the service dates.
• Verify that the facility and professionals are in network.
• Ask whether a referral is also required.
• Check when the authorization expires.

Prior authorization does not necessarily guarantee final claim payment. Eligibility, coding, network status, plan exclusions, benefit limits and other terms may still affect the claim.

If Authorization Is Delayed

1. Ask the provider when the request was submitted.
2. Ask whether UnitedHealthcare requested additional records.
3. Confirm that the correct procedure and member information were used.
4. Request the case or authorization number.
5. Ask for the expected decision date.
6. Ask whether expedited review is appropriate.
7. Document every call and submission.

UnitedHealthcare Provider-Network Problems

Network status can significantly affect the amount a member owes. A hospital may be in network while an anesthesiologist, radiologist, laboratory, emergency physician or other professional involved in the same visit is not.

How To Verify Network Status

1. Sign in to the UnitedHealthcare member account.
2. Search for the provider using the exact plan.
3. Confirm the provider’s name, address and specialty.
4. Call Member Services.
5. Ask UnitedHealthcare to verify network status for the planned date of service.
6. Ask the provider’s office to verify participation.
7. Record the date and call-reference number.

Do not rely only on a provider saying that it “accepts UnitedHealthcare.” A provider may participate in some UnitedHealthcare networks but not the member’s specific plan.

Save screenshots when the online directory appears incorrect and report the discrepancy to UnitedHealthcare.

Medical Bill Does Not Match the EOB

If the provider’s bill is higher than the amount shown as member responsibility:

1. Confirm that both documents refer to the same claim.
2. Check whether the provider submitted a corrected claim.
3. Ask UnitedHealthcare whether the claim was adjusted.
4. Ask the provider to place the bill on hold during review.
5. Send the provider a copy of the EOB when appropriate.
6. Request an itemized bill.
7. Ask whether an appeal or corrected claim is needed.

Do not ignore collection notices while a claim is being reviewed. Contact the provider’s billing department and document that the insurance dispute remains open.

UnitedHealthcare Pharmacy and Prescription Problems

Pharmacy benefits may be administered through UnitedHealthcare, Optum Rx or another plan-specific pharmacy program. Use the pharmacy number printed on the member or prescription card.

Common Prescription Problems

• Medication requires prior authorization
• Medication is not on the formulary
• Step therapy is required
• A quantity limit applies
• The refill is considered too early
• The pharmacy is outside the network
• The prescriber information is missing
• Home-delivery medication is delayed
• A specialty medication requires another pharmacy
• Drug coverage changed

Questions To Ask About a Rejected Prescription

• What is the pharmacy rejection code?
• Is prior authorization required?
• Is there a covered alternative?
• Does step therapy apply?
• Can the prescriber request an exception?
• What medical information is required?
• Is an emergency or temporary supply available?
• How can the decision be appealed?

Ask the prescribing provider to submit the required information and keep the pharmacy rejection notice and case number.

UnitedHealthcare Medicare Customer Service

UnitedHealthcare offers Medicare Advantage, Medicare Part D and Medicare Supplement products. The correct member-service number depends on the plan.

• Existing Medicare Advantage or Part D member: Call the number on the back of the UCard or member ID card.
• General Medicare plan support: 1-844-812-5967.
• Medicare Supplement support: 1-800-523-5800.
• Federal Medicare program: 1-800-633-4227.

Important: 1-800-633-4227 is 1-800-MEDICARE, the federal Medicare program. It is not the general UnitedHealthcare customer-service number.

Common Medicare Member Problems

• UCard not received or not working
• Over-the-counter benefit problem
• Transportation benefit problem
• Prescription coverage denial
• Prior authorization
• Provider no longer in the network
• Dental, vision or hearing benefit question
• Premium or enrollment problem
• Appeal or grievance
• Coverage termination

Medicare plan appeals and grievances commonly have 60-day filing deadlines. Review the plan’s denial letter and Evidence of Coverage for the controlling requirements.

UnitedHealthcare Medicaid and Community Plan Help

UnitedHealthcare Community Plan administers Medicaid and related public health plans in multiple states. Each state program has its own telephone number, benefits, provider network, transportation vendor, appeal process and operating hours.

Members can call 1-800-421-6204 for general Community Plan assistance, but the number printed on the state-specific ID card should take priority.

Common Community Plan Problems

• Primary-care provider assignment
• Transportation to medical appointments
• Prescription coverage
• Dental or vision benefits
• Prior authorization
• Eligibility or renewal
• Provider-directory problem
• Denied service
• Appeal or grievance
• Member ID card replacement

Medicaid eligibility and enrollment may be controlled by the state Medicaid agency rather than UnitedHealthcare. Contact the state agency when the issue involves eligibility, renewal documents or household income information.

UnitedHealthcare Plans Through Work

Employer-sponsored plan members can call the number on their ID card or 1-866-801-4409.

The employer’s human-resources or benefits department may also need to help when the issue involves:

• Enrollment
• Payroll deductions
• Dependent eligibility
• Coverage start or termination date
• COBRA
• Open-enrollment choices
• Incorrect personal information
• Missing employee records

UnitedHealthcare can explain how a claim was processed, but an employer may control eligibility and enrollment information.

UnitedHealthcare Billing and Premium Problems

Premium or billing issues may involve:

• Duplicate premium charges
• Payment applied to the wrong account
• Automatic payment failure
• Coverage canceled for nonpayment
• Retroactive premium adjustment
• Employer payroll deduction problem
• Marketplace subsidy issue
• Refund for an overpayment
• Incorrect coverage dates

Before Reporting a Billing Problem

• Gather premium invoices.
• Locate bank or card payment confirmations.
• Identify the coverage month involved.
• Check whether the transaction is pending or completed.
• Review the policy’s grace period.
• Confirm whether UnitedHealthcare, an employer or the Marketplace collected the payment.
• Save enrollment and cancellation records.

Ask for written confirmation of any reinstatement, adjustment, credit, refund or cancellation. Continue checking the account until the promised correction appears.

Missing UnitedHealthcare Member ID Card

Members can generally view a digital ID card through the UnitedHealthcare member site or mobile app.

How To Access an ID Card

1. Sign in to the member account.
2. Open the ID card section.
3. View, download or print the card.
4. Use the UnitedHealthcare app to display the card on a mobile device.
5. Request a mailed replacement when necessary.

If the account cannot be found, call 1-866-414-1959 or contact the employer, Marketplace or state agency responsible for enrollment.

Unable To Sign In to UnitedHealthcare

The member website and app may allow members to:

• View digital ID cards
• Review claims and EOBs
• Check plan benefits
• Find network providers
• Review pharmacy information
• Estimate medical costs
• Access forms
• Check account balances
• Chat with customer service

Account Login Troubleshooting

• Use the forgotten username or password option.
• Confirm that the correct member website is being used.
• Check whether the plan recently changed.
• Confirm that the date of birth and ZIP code match the plan records.
• Try another supported browser.
• Clear browser cookies or use a private window.
• Update the UnitedHealthcare app.
• Call the ID-card number when registration fails.

Do not create several member accounts unless UnitedHealthcare instructs you to do so.

Reporting UnitedHealthcare Fraud or Abuse

UnitedHealthcare members can report suspected health care fraud or abuse at 1-844-359-7736.

Possible concerns include:

• A provider billing for services not received
• Duplicate claims
• Incorrect dates or procedures
• Someone using another person’s insurance card
• Falsified medical records
• Unrecognized claims appearing on an EOB
• Kickbacks or improper referral payments
• Prescription fraud

Keep the EOB, provider information, dates and related documents. Do not confront a suspected person or provider if doing so could create a safety risk.

UnitedHealthcare Scam Calls and Messages

Scammers may impersonate UnitedHealthcare, Medicare, Medicaid or a medical provider and ask for:

• A Social Security number
• A Medicare number
• The complete member ID
• A payment-card number
• A one-time verification code
• Payment for a new insurance card
• Remote access to a computer or phone
• Gift cards or cryptocurrency

Do not rely on caller ID alone. End the communication and call the number printed on the member ID card or use UnitedHealthcare’s official website.

How To Escalate an Unresolved UnitedHealthcare Complaint

1. Start with the ID-card number. This routes the member to the correct plan.
2. Request a call-reference or case number. Record the representative, date and explanation.
3. Ask for supervisor review. Clearly describe what remains unresolved.
4. Use the member account. Download claims, EOBs and plan documents.
5. Contact the employer or state agency. This may be necessary for eligibility and enrollment problems.
6. File a formal appeal or grievance. Follow the deadline and address in the denial notice.
7. Request expedited review when medically appropriate.
8. Review external appeal rights. Certain denials may qualify for independent review.
9. Keep a written timeline. Include calls, transfers, submissions and promised callbacks.
10. Contact the appropriate regulator. This may include a state insurance department, Medicaid agency, Medicare, employer-benefits regulator or another agency.

What To Include in a Written Complaint

• The member and policy information
• The claim, authorization or case number
• A concise timeline
• The departments previously contacted
• Copies of EOBs, bills, denials and receipts
• The relevant plan language
• The requested resolution
• A request for written follow-up

Use secure channels for medical and identity information. Do not send health records to an email address or website that has not been verified as belonging to UnitedHealthcare.

UnitedHealthcare Customer Reviews and Complaint Sentiment

At the time this page was updated, the CustomerServiceNumbers.com review module displayed a UnitedHealthcare rating of 0 out of 5 stars based on zero reviews.

Because no reviews have been submitted on this page, there is not yet enough CustomerServiceNumbers.com feedback to identify complaint patterns or measure UnitedHealthcare’s current claim handling, member service, provider network, billing, pharmacy support or appeal performance.

The previous article referred generally to positive feedback about provider networks and complaints about claims, billing and customer support. Those statements were not supported by reviews submitted on this page and have been removed.

What To Include in a UnitedHealthcare Review

• The type of plan involved
• Whether coverage came through Medicare, Medicaid, an employer or an individual plan
• Whether the issue involved a claim, bill, authorization, pharmacy or account access
• The department contacted
• Whether UnitedHealthcare opened a case or appeal
• How long it took to reach assistance
• Whether documents were requested
• Whether a promised callback occurred
• Whether a decision or charge was corrected
• Whether the issue was ultimately resolved

What To Expect When Contacting UnitedHealthcare

• The representative may request the member ID and group number.
• Different benefits may be handled by different departments.
• Employer plans may require help from the employer.
• Medicaid plans may require coordination with a state agency.
• Claims questions may require the EOB and provider bill.
• Prior-authorization problems may require action by the treating provider.
• Prescription issues may be handled by Optum Rx or another administrator.
• An appeal may require medical records and written documentation.
• A promised adjustment may take time to appear.
• Plan-specific rules can differ from general information shown online.

UnitedHealthcare Frequently Asked Questions

What is the UnitedHealthcare customer-service number?

Existing members should call the number on the back of their member ID card. People without the card can call 1-866-414-1959 for general assistance.

What is the UnitedHealthcare number for plans through work?

UnitedHealthcare currently lists 1-866-801-4409 for plans obtained through an employer.

What is the UnitedHealthcare Medicare number?

Existing Medicare members should call the number on the back of their UCard. General Medicare plan support is available at 1-844-812-5967.

Is 1-800-633-4227 a UnitedHealthcare number?

No. 1-800-633-4227 is 1-800-MEDICARE, the federal Medicare program.

What is the UnitedHealthcare Medicare Supplement number?

Medicare Supplement support can be reached at 1-800-523-5800.

What is the UnitedHealthcare Medicaid number?

Medicaid and Community Plan members should call the state-specific number on their ID cards. General Community Plan assistance is available at 1-800-421-6204.

How do I appeal a UnitedHealthcare denial?

Call the number on the ID card, review the denial notice and submit the appeal using the address, fax number, portal or form specified in the notice.

How long do I have to appeal?

Deadlines vary. Medicare appeals commonly use a 60-day deadline, while employer and individual plans may use different time periods. Follow the deadline printed in the denial notice.

How do I find an in-network UnitedHealthcare doctor?

Sign in to the member account and search using the exact plan. Confirm network status by calling Member Services before receiving nonemergency care.

Why did UnitedHealthcare deny my claim?

Possible reasons include missing authorization, an out-of-network provider, incorrect claim information, lack of eligibility, an exclusion, a benefit limit or a medical-necessity decision.

How do I replace a UnitedHealthcare ID card?

Sign in to the member website or app to view a digital card and request a replacement. Call general member help if the account cannot be accessed.

How do I report health care fraud?

UnitedHealthcare members can report suspected fraud or abuse at 1-844-359-7736.

Does UnitedHealthcare offer live chat?

Eligible members can sign in through the UnitedHealthcare website or app to chat directly with customer service.

Where is UnitedHealthcare headquartered?

UnitedHealthcare is part of UnitedHealth Group, whose principal executive offices are at 9900 Bren Road East, Minnetonka, Minnesota 55343.

Related Health Insurance Customer Service Pages

• Aetna Customer Service
• Cigna Customer Service

Related Consumer Resources

• UnitedHealthcare Corporate Office and Headquarters Information
• Research an Unknown Insurance or Health Care Charge
• Check a Suspicious UnitedHealthcare or Medicare Message
• Read and Share Company Reviews
• Find Chat and Online Customer-Support Options

Why Trust CustomerServiceNumbers.com?

CustomerServiceNumbers.com has helped consumers locate company-support information and share customer-service experiences since 2004. We independently organize verified contact routes, common insurance problems, complaint information, claims guidance and practical escalation steps.

Our goal is not simply to publish one general telephone number. UnitedHealthcare members may need different departments for employer coverage, individual plans, Medicare, Medicaid, pharmacy benefits, prior authorization, claims, appeals or fraud reporting.

Reviews may be moderated for spam, profanity, scams and personally identifiable information while preserving the reviewer’s original meaning.

Share Your UnitedHealthcare Customer Service Experience

Have you contacted UnitedHealthcare about a denied claim, billing problem, prior authorization, provider-network issue, prescription, Medicare benefit, Medicaid service, appeal or inaccessible account?

Leave a rating and review below. Include the type of plan, department contacted, whether UnitedHealthcare opened a case or appeal, how long the process took, and whether the problem was resolved.

Do not publish member IDs, claim numbers, diagnoses, medical records, Social Security numbers, payment information, home addresses or other sensitive health information.

Disclaimer: CustomerServiceNumbers.com is an independent consumer website and is not affiliated with UnitedHealthcare, UnitedHealth Group, Optum, Medicare, Medicaid, an employer, provider or insurance administrator. CustomerServiceNumbers.com cannot access policies, verify benefits, process claims, approve authorizations, provide medical advice or decide appeals. Contact the appropriate insurer or plan administrator directly.