Aminu Birhan, M.D.
NPI 1659507788 · Internal Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aminu Birhan, M.D. is a Internal Medicine Physician provider in Lancaster, CA (NPI 1659507788).
Provider details
- NPI number
- 1659507788
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD70065298 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 211 | 40 |
| Abiraterone Acetate | 200 | 33 |
| Lenalidomide | 160 | 14 |
| Anastrozole | 78 | 23 |
| Dexamethasone | 74 | 26 |
| Rivaroxabanbrand: Xarelto | 63 | 12 |
| Hydroxyurea | 53 | 15 |
| Zanubrutinibbrand: Brukinsa |
Practice location
Mailing address
Additional practice locations (1)
- 201 16th Ave ESeattle, WA 98112-5226Phone: (206) 326-3000Fax: (877) 515-2975
Registry dates
- Enumerated
- 2009-06-03
- Last updated
- 2026-01-06
- Certified
- 2026-01-06
Frequently asked questions
- What is Aminu Birhan's NPI number?
- Aminu Birhan's National Provider Identifier (NPI) is 1659507788, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aminu Birhan's specialty?
- Aminu Birhan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aminu Birhan located?
- Aminu Birhan's practice location on file with NPPES is Lancaster Kaiser Permanente Facility, Lancaster, CA 93534.
- What is Aminu Birhan's phone number?
- The practice phone number listed in the NPPES registry for Aminu Birhan is (661) 726-2226.
- Does Aminu Birhan accept Medicare?
- Aminu Birhan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aminu Birhan's NPI active?
- Yes — Aminu Birhan's NPI (1659507788) is active in the NPPES registry as of the last update on 2026-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.