Ali-Reza Barmaki, M.D.
NPI 1003921461ActiveIndividual· Internal Medicine· Walnut Creek, CA
Internal Medicine (M.D.) with John Muir Physician Network and 1 other group, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $38,207 for 614 claims, against $4,014 paid for services in 2024. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1003921461 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 19, 2006 |
| Last updated in NPPES | Jun 17, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A92599 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 67 across 9 procedure codes |
| Paid by Medicare | $4,014 |
Part D prescriptions in 2024
| Prescriptions (claims) | 614 · 699 30-day fills |
|---|---|
| Patients | 125 |
| Total drug cost | $38,207 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
Medical groups
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
- Department of State HospitalsNapa, CA · 270 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Providence Queen of the Valley Medical CenterNapa, CA
Other facilities
- Suncrest HospiceHospice · Fremont, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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