The Oscar Health provider phone number is 1-855-672-2755. Press Option 4 for Provider Services (claims, benefits, eligibility and administrative questions, Mon–Fri 8 a.m.–6 p.m. local time) or Option 1 for Utilization Management (Mon–Fri 8 a.m.–5 p.m. local time). The same number serves members on Option 2, so pick the provider option. Behavioral health, imaging and other delegated services go to the vendor instead: Optum, eviCore, American Specialty Health or Progeny.
Which Oscar Number Should a Provider Call?
Call 1-855-672-2755 and choose Option 4 unless the question is a utilization review or a service Oscar delegates to a vendor. Oscar runs one shared phone number for members and providers and splits callers by menu option. The 2026 Oscar Provider Manual (last updated September 1, 2026) lists two provider options on that line, each with its own hours.
The number is the same across Oscar's states. Oscar's Texas state supplement points providers to the same (855) 672-2755, Option 4. What changes by state is the vendor that handles a delegated service and the fax number printed on each state's authorization form.
| Line | Phone / Option | Use It For | Hours |
|---|---|---|---|
| Provider Services | 1-855-672-2755, Option 4 | Claims inquiries, benefit verification, member cost share, administrative processes, referral status, language assistance | Mon–Fri, 8:00 a.m.–6:00 p.m. local time |
| Utilization Management | 1-855-672-2755, Option 1 | Authorization questions for services Oscar reviews itself | Mon–Fri, 8:00 a.m.–5:00 p.m. local time |
| Member Services | 1-855-672-2755, Option 2 | Member-only: PCP changes, interpreter services, member questions | Not a provider line |
| Network contracting / provider relations | 1-855-672-2755, Option 4, or providerrelations@hioscar.com | Contracting questions, per Oscar's contact page | Same as Provider Services |
Hours come from the manual's Resources table. Oscar's network contracting contact page also routes claims, eligibility and authorization questions to the Oscar provider portal first, and lists Option 4 for anyone who needs to speak with Oscar directly.
Don't Stop at the Member Menu
Oscar's public website shows 855-672-2755 with Mon–Fri 8 a.m.–8 p.m. hours. That is the member-facing listing. The provider manual gives shorter provider hours: 6 p.m. for Provider Services and 5 p.m. for Utilization Management. Late-afternoon calls about an authorization can miss the UM window.
Oscar Fax Numbers and Mailing Addresses for Disputes and Appeals
Send claim disputes to fax 1-888-977-2062 and clinical appeals to fax 1-844-965-9054. The cover form, not the fax number, tells Oscar what the packet is. Each number below comes from Oscar's current provider cover forms and the 2026 manual.
Stop sitting on hold with insurers.
Muni Calls handles prior authorizations, claim follow-ups, and eligibility checks — your staff gets 15+ hours back every week.
| Purpose | Fax | Mail / Other |
|---|---|---|
| Claims Disputes Provider Form (payment disputes, including timely filing) | 1-888-977-2062 | Oscar Health, Inc., P.O. Box 52146, Phoenix, AZ 85072-2146, or the provider portal |
| Claims-Related Documents (records, itemized bills, primary EOPs) | 1-888-977-2062 | Same P.O. Box |
| Clinical Appeals Provider Form (medical necessity, experimental/investigational) | 1-844-965-9054 | Same P.O. Box |
| Network gap exception (out-of-network authorization, fax packet) | 844-965-9053 | Use only if Availity submission isn't possible |
| Prescription drug prior authorization | 1-855-211-0731 | Or CoverMyMeds; phone 1-855-672-2755 |
| Complaints and grievances | 1-888-977-2062 | Phone 1-855-672-2755; email help@hioscar.com |
| Potential quality issue (PQI) reports | 1-888-732-0625 |
The network gap exception fax comes from Oscar's Availity prior authorization guide (version 3.0, revised October 2026). The drug PA fax appears in both the manual and Oscar's 2026 provider welcome kit. For which form to use and how to fill it out, see the Oscar Health appeal form guide.
Authorization Faxes Vary by State
Oscar's manual says non-digital authorization requests go on Oscar's Authorization Request Form, faxed "to the number provided on the form," and those forms are published by state at hioscar.com/forms. Oscar prefers Availity Essentials for new authorizations. Pull the form for the member's state rather than reusing a fax number from another market.
Delegated Vendors: When Oscar Isn't the Right Call
Call the vendor first when the service is one Oscar delegates, because the vendor runs that review and its reconsiderations. The manual says that for a delegated service, a call to Oscar ends in a transfer or an instruction to contact the vendor. These are the vendor contacts listed in the 2026 manual's delegated-vendor table:
| Vendor | Services | Phone | Fax | States |
|---|---|---|---|---|
| Optum | Behavioral health and substance use: authorizations, reconsiderations, first-level appeals | 877-614-0484 | By state and region on Optum's Provider Express contact page | All states |
| eviCore healthcare | Cardiology/cardiac imaging, sleep, lab, interventional pain, outpatient joint and spine surgery, radiation and medical oncology | 855-252-1118 | 800-540-2406 | All states except Michigan (Michigan requests go to Oscar through Availity) |
| American Specialty Health (ASH) | Outpatient physical and occupational therapy | 800-848-3555 | 877-248-2746 | All states |
| Progeny Health | NICU and special care nursery admissions through the first year of life | 610-832-2001 | 1-866-465-8926 | All states |
| DentaQuest | Pediatric dental | 855-418-1624 (provider customer service) | 262-834-3589 (paper claims) | AZ, CT, GA, KS, MO, PA, TN, NY, NJ |
| Davis Vision (Versant Health) | Pediatric vision | 1-800-773-2847 (provider inquiry, per welcome kit) | 888-343-3475 | All states |
| CVS Caremark | Pharmacy help desk; specialty pharmacy | 800-364-6331 (help desk); 800-237-2767 (specialty) | All states; Oscar itself handles drug authorizations |
Two vendor numbers differ between Oscar documents, so match the number to the task. The manual lists Optum at 877-614-0484. Oscar's October 2026 Availity guide tells providers to contact Optum at (877) 855-1317 for behavioral health authorization requests, which must go to Optum directly. Likewise, the manual lists ASH at 800-848-3555, while the Availity guide gives 1-800-972-4226, Option 2 for activating an ASHLink portal account.
The Availity guide also explains how the routing works in practice. Availity redirects an authorization to eviCore or ASH based on the service code, and returns messages such as "Submit to eviCore for review" when a code belongs to a delegated vendor. If you see one of those messages, the vendor owns the request. Calling Oscar won't move it.
Oscar Medical Necessity Denials and Peer to Peer
Request an Oscar peer-to-peer review within seven business days of the authorization denial, using the instructions in the denial letter. The 2026 manual says the provider of record is notified of the opportunity in the denial notice. It does not apply to denials for non-covered benefits.
For vendor-issued denials, the vendor's own process applies. If eviCore, ASH, Optum or Progeny signed the letter, use that vendor's number from the table above. Our peer-to-peer review call script covers what to have open when the reviewer picks up. If the peer to peer doesn't overturn the denial, the Oscar Health prior authorization denial guide walks through the clinical appeal.
Other Oscar Provider Lines and Portals
Most practice questions can be answered without a phone call. Oscar lists these self-service channels and secondary lines:
- Oscar provider portal (provider.hioscar.com): eligibility and benefits, referrals, claims and payments, and claim disputes.
- Availity Essentials: Oscar's preferred channel for new authorizations and the only clearinghouse Oscar uses. Payer ID OSCAR. The manual lists claim-status CPIDs 9638 and 7468.
- Case management referrals: 844-357-6585, per the welcome kit. Refer behavioral health case management to Optum.
- Payment and remittance options: 888-686-3260, the number the manual gives for Oscar's payment partners.
- Compliance hotline: 1-844-392-7589, for suspected fraud, waste or abuse.
For transplant claims, the welcome kit routes pricing to Optum Complex Medical Claims (877-801-3507, ext. 3) or Cigna LifeSource, depending on the member's transplant network. Those claims go to the vendor for pricing before Oscar pays them.
What to Have Ready Before You Call Oscar
Have the member and claim identifiers ready before you dial, because Provider Services routes on them:
- Member ID with the OSC prefix and suffix: Oscar's Availity guide shows IDs in the format OSC12345678-01
- The member's state and plan name: decides the network, the authorization form and the vendor
- NPI and Tax ID for the billing provider
- Claim number or authorization reference: Oscar's Availity guide says requests submitted on and after October 14 use a Case ID
- The denial or remittance reason code from the Explanation of Payment
For a step-by-step version, use our claim status call script or the eligibility verification call script. If the call is about a deadline, check Oscar Health timely filing limits first.
Common Mistake
Calling Provider Services to argue a clinical denial. Option 4 can explain a claim status or a reason code, but it doesn't decide clinical appeals. For a medical necessity denial, request a peer to peer within seven business days or file the Clinical Appeals form at 1-844-965-9054. The full process is in our Oscar Health appeal guide.
How Muni Calls Handles Oscar Provider Calls
Muni Calls places configured outbound payer calls, such as Oscar claim status or eligibility checks, and returns the result for staff review. Your team confirms the destination number, the menu option, the member's state plan and the information the rep needs before a call runs. Results include the reference number and representative details when Oscar provides them. A demo shows which Oscar workflows fit your practice.
Frequently Asked Questions
What is the Oscar Health provider phone number?
1-855-672-2755. Choose Option 4 for Provider Services or Option 1 for Utilization Management. The manual lists Provider Services hours as Monday to Friday, 8:00 a.m. to 6:00 p.m. local time.
What is the Oscar Health prior authorization phone number?
Call 1-855-672-2755, Option 1, for Utilization Management, Monday to Friday, 8:00 a.m. to 5:00 p.m. local time. Oscar asks providers to submit new authorizations in Availity Essentials. Delegated services go to the vendor: eviCore at 855-252-1118, ASH at 800-848-3555, Progeny at 610-832-2001, or Optum for behavioral health.
What is the Oscar Health claims phone number?
There is no separate claims line. Claims questions go to Provider Services at 1-855-672-2755, Option 4. Claim disputes are filed through the provider portal, by fax at 1-888-977-2062, or by mail to P.O. Box 52146, Phoenix, AZ 85072-2146.
What is the Oscar Health appeal fax number?
Clinical appeals fax to 1-844-965-9054. Payment disputes, including timely filing disputes, fax to 1-888-977-2062 with the Claims Disputes Provider Form.
Does Oscar have different provider phone numbers by state?
No. The 2026 manual and the Texas state supplement use 1-855-672-2755 for providers in every market. What varies by state is the vendor for some services, the authorization form and its fax number, and plan rules covered in Oscar's state supplements.
Who handles Oscar behavioral health authorizations?
Optum. Oscar's manual lists Optum at 877-614-0484, and Oscar's October 2026 Availity guide says behavioral health authorization requests go directly to Optum at (877) 855-1317. Claims go to Optum, P.O. Box 30757, Salt Lake City, UT 84130-0757, payer ID 87726.
Stop Waiting in the Wrong Oscar Queue
Save the three choices that cover most calls: Option 4 for Provider Services, Option 1 for Utilization Management, and the vendor named on the letterhead for delegated services. When the call ends in a denial, use the Oscar Health appeal letter templates or the Oscar Health medical necessity letter template for the written appeal.
Sources were checked November 2, 2026, against the 2026 Oscar Provider Manual (last updated September 1, 2026), Oscar's 2026 Provider Welcome Kit, Oscar's Availity Essentials prior authorization guide (version 3.0, October 2026), Oscar's provider cover forms, and Oscar's provider contact page. Phone menus and vendor delegations change. A 2027 manual takes effect February 1, 2027. If a number here conflicts with a current denial letter, Explanation of Payment or authorization record, follow the document. This guide is for administrative and billing purposes and is not medical or legal advice.