DR. SEAN MICHAEL PENWELL M.D.
NPI 1346561412
General Practice in Avondale, AZ
About Dr. Sean Michael Penwell M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SEAN MICHAEL PENWELL M.D. (NPI 1346561412) is an individual general practice provider in Avondale, Arizona, licensed in Arizona (75200) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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. Sean Michael Penwell M.d. 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
4Medicare enrollment records show Sean Penwell reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Avondale, AZ 85323
- Reassigned Medicare billing, Arizona enrollment
- Medicare enrollment name: Healthstar Medical Group PC
Chula Vista, CA 91911
- Reassigned Medicare billing, California enrollment
- 32 clinicians in this Medicare group
San Francisco, CA 94111
- Reassigned Medicare billing, California enrollment
- 407 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Arizona enrollment
- 556 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
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 Sean Penwell's NPI number?
The NPI number for Sean Penwell is 1346561412. It was assigned to this individual provider in the NPPES registry on June 11, 2010.
Where is Sean Penwell located?
Sean Penwell practices at 9950 W Van Buren St Ste 114, Avondale, AZ 85323. The listed phone number is (424) 322-9032.
What is Sean Penwell's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Sean Penwell enrolled in Medicare?
Yes. Sean Penwell 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 Sean Penwell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Penwell reassigns Medicare benefits to 4 organizations: Healthstar Medical Group P.C. (Avondale, AZ), Marque Medical Clinic, Inc (Chula Vista, CA), Signify Health Medical Associates Of California, PC (San Francisco, CA) and Signify Health, LLC (Dallas, TX). 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 Sean Penwell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Sean Penwell was last updated on September 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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. Sean Michael Penwell, M.D. · NPI 1346561412
General Practice physician in Avondale, Arizona. Individual provider, active in the CMS NPPES registry since June 11, 2010.
## Identity
- **NPI:** 1346561412 (Entity type: Individual)
- **Enumerated:** June 11, 2010
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** 75200 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 9950 W VAN BUREN ST STE 114, Avondale, AZ 85323-5317
- **Phone:** (424) 322-9032
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Healthstar Medical Group P.C. (NPI 1336075548, Avondale, AZ); Marque Medical Clinic, Inc (NPI 1164303442, Chula Vista, CA); Signify Health Medical Associates Of California, PC (NPI 1124685169, San Francisco, CA); Signify Health, LLC (NPI 1689158487, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** September 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1346561412) · Data from the CMS NPPES public registry.