Ali-Reza Barmaki, M.D.
NPI 1003921461 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ali-Reza Barmaki, M.D. is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1003921461).
Provider details
- NPI number
- 1003921461
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A92599 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
40 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 26 | $88 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 14 | $45 |
Typical Medicare-allowed amounts for these services range $45–$88 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 41 | 11 |
| Levothyroxine Sodium | 35 | 15 |
| Pantoprazole Sodium | 28 | — |
| Quetiapine Fumarate | 28 | — |
| Furosemide | 23 | 11 |
| Tamsulosin Hcl | 23 | — |
| Apixabanbrand: Eliquis |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-19
- Last updated
- 2012-06-17
Frequently asked questions
- What is Ali-Reza Barmaki's NPI number?
- Ali-Reza Barmaki's National Provider Identifier (NPI) is 1003921461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ali-Reza Barmaki's specialty?
- Ali-Reza Barmaki is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ali-Reza Barmaki located?
- Ali-Reza Barmaki's practice location on file with NPPES is 1220 Rossmoor Pkwy, Walnut Creek, CA 94595-2501.
- What is Ali-Reza Barmaki's phone number?
- The practice phone number listed in the NPPES registry for Ali-Reza Barmaki is (925) 947-3393.
- Does Ali-Reza Barmaki accept Medicare?
- Ali-Reza Barmaki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ali-Reza Barmaki's NPI active?
- Yes — Ali-Reza Barmaki's NPI (1003921461) is active in the NPPES registry as of the last update on 2012-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.