Arun Dahyabhai Patel, MD
NPI 1477628840ActiveIndividual· Internal Medicine· Fullerton, CA
Internal Medicine (MD) in Fullerton, California, licensed in CA, with an NPI issued in November 2006. Their prescriptions cost Medicare Part D more than their services did: $1,583,996 for 13,992 claims, against $349,167 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 12 companies reporting payments in 2025, $863.68 in all, mostly food and beverage. Lists Ahmc Anaheim Regional Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1477628840 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 21, 2006 |
| Last updated in NPPES | Dec 8, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A46567 | 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 | 313 |
|---|---|
| Services billed | 4,427 across 44 procedure codes |
| Paid by Medicare | $349,167 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,992 · 29,514 30-day fills |
|---|---|
| Patients | 443 |
| Total drug cost | $1,583,996 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Ahmc Anaheim Regional Medical CenterAnaheim, CA
- Providence St. Jude Medical CenterFullerton, CA
Other facilities
- Gordon Lane Care CenterNursing home · Fullerton, CA
Industry payments (Open Payments)
- 2025$863.68 · 36 payments from 12 companies
- 2024$940.09 · 38 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $253.46 | 12 |
| Merck Sharp & Dohme LLC | $167.95 | 8 |
| Amgen Inc. | $145.39 | 3 |
| Lilly USA, LLC | $67.79 | 3 |
| Glaxosmithkline, LLC. | $63.35 | 3 |
What the 2025 payments were for
- Food and Beverage$863.68 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 56 internal medicine physicians in Fullerton · All internal medicine physicians in California