Coverage profile
How Substrate can help you with Medicare Arizona Part B
Substrate can help practices and billers with the following claims tasks for Medicare Arizona Part B.
Eligibility
EDI 270/271The Substrate Eligibility Agent can verify patient benefits, identify TPAs and carve-outs, and more with Medicare Arizona Part B.
Portal claim status
Browser automationThe Substrate Claim Status Agent can check claim status via the payer portal for Medicare Arizona Part B.
2027 maternity billing research
When does Medicare Arizona Part B change OB/GYN billing?
Transition begins 2027-01-01. CMS proposes valuing the new CPT codes but is considering 15 Medicare-specific global maternity HCPCS codes GMAT1-GMAT15 instead.
- Transition start
- 2027-01-01
- Billing start
- Not published
- Published
- 2026-07-16
- Current As Of
- August 2026
Scope: federal Medicare Part B proposal; MAC instructions pending
CY 2027 Physician Fee Schedule proposed rule. Verify the payer source before claim submission.
Frequently asked questions
Medicare Arizona Part B payer FAQs
Can I automate Medicare Arizona Part B portal follow-up?
Yes — portal retrieval is required when 276/277 is missing or stale. See payer portal automation and learn why 276/277 is not enough.
What is the payer ID for Medicare Arizona Part B?
The primary payer ID for Medicare Arizona Part B is 03102. The correct routing ID can differ by clearinghouse and transaction, so compare the 837P, 837I, 835, 270, and 276 entries before submitting.
What is the provider portal for Medicare Arizona Part B?
The provider portal for Medicare Arizona Part B is https://www.noridianmedicareportal.com/web/nmp/home. Available features depend on the payer and your account.
What are the 837 payer IDs for Medicare Arizona Part B?
For professional claims, use 03102 via Stedi. For institutional claims, use 03102 via Stedi.
What is the 835 payer ID for Medicare Arizona Part B?
The 835 payer ID for Medicare Arizona Part B is 03102 via Stedi.
What is the 270 payer ID for Medicare Arizona Part B?
The 270 payer ID for Medicare Arizona Part B is 03102 via Stedi.
What state does Medicare Arizona Part B operate in?
Medicare Arizona Part B operates in AZ.
Routing reference
Medicare Arizona Part B payer IDs and operating states
Use the payer ID listed for the transaction you are submitting. Verify current routing and enrollment requirements with your clearinghouse.
| Payer name | Medicare Arizona Part BSource: Substrate payer directory · last refreshed |
|---|---|
| Operating states | AZSource: Substrate payer directory · last refreshed |
| 837P professional claims payer IDStedi | 03102Enrollment requiredSource: Stedi payer catalog · catalog dated · matched by payer ID |
| 837I institutional claims payer IDStedi | 03102Source: Stedi payer catalog · catalog dated · matched by payer ID |
| 835 ERA payer IDStedi | 03102Enrollment requiredSource: Stedi payer catalog · catalog dated · matched by payer ID |
| 270 eligibility payer IDStedi | 03102Enrollment requiredSource: Stedi payer catalog · catalog dated · matched by payer ID |
Routing sources and verification
- Substrate payer directoryPayer identity, aliases, operating states, and vendor IDs. Last refreshed .Open payer website ↗
- Stedi payer catalogMatched by payer ID; matched record: Medicare Arizona Part B. Source dated .PrimaryPayerId is used as the transaction payer ID when the corresponding Stedi support flag is true.Open current Stedi reference ↗
Clearinghouse payer IDs are transaction-specific and can change. Confirm the current payer list and the member’s ID card before submission.
Payer contact directory
Medicare Arizona Part B phone and fax numbers
Use the number associated with your task. These contacts were stated in successful eligibility responses and may apply to specific benefits, products, or departments.
- Eligibility / benefits phone
- (602) 453-5592MERCY CARE
| Channel and number | Payer Notes | Department | Specialties |
|---|---|---|---|
| phone(602) 453-5592 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(800) 234-8755 | Eligibility / benefitsBenefit context: Contact Following Entity for Eligibility or Benefit Information |
| Health Benefit Plan Coverage |
| phone(800) 448-6262 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(800) 643-4845 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(800) 926-6565 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(833) 570-6670 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(888) 230-7338 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(888) 888-9355 | Eligibility / benefits, PharmacyBenefit context: Contact Following Entity for Eligibility or Benefit Information; Benefit context: Other or Additional Payor |
| Health Benefit Plan Coverage, Pharmacy |
| phone(202) 942-1270 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(423) 954-6977 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(619) 980-6944 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(833) 464-1010 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(866) 235-5660 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(866) 309-1719 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(866) 443-1095 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(866) 460-8854 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(866) 529-4917 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(877) 344-7364 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(877) 895-6448 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(888) 867-5575 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
| phone(920) 221-4087 | PharmacyBenefit context: Other or Additional Payor |
| Pharmacy |
Phone and fax numbers sourced directly from the payer response
Other aliases
Also known as
- 03102
- 1456
- AZMCR
- IMAZ0
- SMAZ0
- Arizona Medicare
- Noridian (NHS) - Arizona
- MEDICARE PART B AZ
- MCAREBAZ31
- MEDICARE NORIDIAN