DR. WILL AARON MARTIN MD
NPI 1891323473
Anesthesiology in Phoenix, AZ
About Dr. Will Aaron Martin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILL AARON MARTIN MD (NPI 1891323473) is an individual anesthesiology provider in Phoenix, Arizona, licensed in Arizona (71571) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS and is a graduate of University Of South Alabama College Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Will Aaron Martin Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Will Martin reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85016
- Reassigned Medicare billing, Texas enrollment
- 599 clinicians in this Medicare group
Phoenix, AZ 85012
- Reassigned Medicare billing, Arizona enrollment
- 728 clinicians in this Medicare group
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 clinicians in this Medicare group
Scottsdale, AZ 85260
- Reassigned Medicare billing, Arizona enrollment
- 35 clinicians in this Medicare group
Phoenix, AZ 85037
- Reassigned Medicare billing, Arizona enrollment
- 423 clinicians in this Medicare group
Chandler, AZ 85224
- Reassigned Medicare billing, Arizona enrollment
- 26 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, Arizona enrollment
- 390 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Will Martin's NPI number?
The NPI number for Will Martin is 1891323473. It was assigned to this individual provider in the NPPES registry on March 30, 2020.
Where is Will Martin located?
Will Martin practices at 4212 N 16th St, Phoenix, AZ 85016. The listed phone number is (602) 263-1200.
What is Will Martin's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Will Martin enrolled in Medicare?
Yes. Will Martin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Will Martin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Will Martin reassigns Medicare benefits to 7 organizations: Dhew Ind Hlth Sv Hlth Svs & Mntl Hlth Adm (Phoenix, AZ), Banner - University Hospital Based Physicians LLC (Phoenix, AZ), District Medical Group, Inc (Phoenix, AZ), Legacy Anesthesia LLC (Scottsdale, AZ), Greater Anesthesia Solutions (Phoenix, AZ) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Will Martin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Will Martin accept?
Health plans from Blue Cross Blue Shield of Arizona, Oscar Health, Oscar Health Plan, Inc. and Oscar Insurance Company list Will Martin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Will Martin was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Will Aaron Martin, MD · NPI 1891323473
Anesthesiology physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since March 30, 2020.
## Identity
- **NPI:** 1891323473 (Entity type: Individual)
- **Enumerated:** March 30, 2020
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 71571 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4212 N 16TH ST, Phoenix, AZ 85016-5319
- **Phone:** (602) 263-1200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Dhew Ind Hlth Sv Hlth Svs & Mntl Hlth Adm (NPI 1083643738, Phoenix, AZ); Banner - University Hospital Based Physicians LLC (NPI 1750751566, Phoenix, AZ); District Medical Group, Inc (NPI 1174856280, Phoenix, AZ); Legacy Anesthesia LLC (NPI 1750945507, Scottsdale, AZ); Greater Anesthesia Solutions (NPI 1124430244, Phoenix, AZ); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of South Alabama College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** November 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1891323473) · Data from the CMS NPPES public registry.