Onkarjit Singh Marwah, M.D.
NPI 1255314514ActiveIndividual· Internal Medicine, Cardiovascular Disease· Glendale, CA
Internal Medicine, Cardiovascular Disease (M.D.) in Glendale, California, trained at Foreign Dental Schools (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $3,840,981 for 12,967 claims, against $427,824 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 12 companies reporting payments in 2025, $1,261 in all, mostly food and beverage.
Overview
| NPI | 1255314514 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 21, 2005 |
| Last updated in NPPES | Aug 15, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A48220 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,198 |
|---|---|
| Services billed | 8,266 across 80 procedure codes |
| Paid by Medicare | $427,824 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,967 · 18,498 30-day fills |
|---|---|
| Patients | 842 |
| Total drug cost | $3,840,981 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Foreign Dental Schools |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Glendale Adventist Medical CenterGlendale, CA
- Glendale Mem Hospital & Hlth CenterGlendale, CA
- Kaiser Foundation Hospital - Panorama CityPanorama City, CA
Industry payments (Open Payments)
- 2025$1,261 · 27 payments from 12 companies
- 2024$3,268 · 43 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $250.13 | 3 |
| Actelion Pharmaceuticals US, Inc. | $241.16 | 8 |
| Medtronic, Inc. | $168.51 | 2 |
| Abbott Laboratories | $153.44 | 2 |
| Shockwave Medical, Inc | $129.43 | 2 |
What the 2025 payments were for
- Food and Beverage$1,073 · 25 payments
- Education$187.98 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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