Michael T. Duffy, M.D.
NPI 1689635328ActiveIndividual· Specialist· Beverly Hills, CA
Specialist (M.D.) in Beverly Hills, California, trained at University of Minnesota Medical School (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $351,766 for 3,021 claims, against $84,430 paid for services in 2024. Amgen Inc. was the largest of 18 companies reporting payments in 2025, $1,283 in all, mostly food and beverage.
Overview
| NPI | 1689635328 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 31, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | G59599 | 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 | 225 |
|---|---|
| Services billed | 1,757 across 47 procedure codes |
| Paid by Medicare | $84,430 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,021 · 6,280 30-day fills |
|---|---|
| Patients | 241 |
| Total drug cost | $351,766 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Cedars-Sinai Medical CenterLos Angeles, CA
Other facilities
- Gl Home Health Care, IncHome health agency · Burbank, CA
- Metropolitan Home HealthHome health agency · Valley Village, CA
Industry payments (Open Payments)
- 2025$1,283 · 49 payments from 18 companies
- 2024$1,100 · 48 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $342.73 | 10 |
| Abbvie Inc. | $327.05 | 10 |
| Lilly USA, LLC | $67.86 | 3 |
| Glaxosmithkline, LLC. | $66.60 | 3 |
| Merck Sharp & Dohme LLC | $66.30 | 3 |
What the 2025 payments were for
- Food and Beverage$1,283 · 49 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Specialist providers in Beverly Hills
- 1013979673
- 1073544417
- 1144208950
- 1225069248
- 1245270859
- 1336154707
- 1376554139
- 1457330169
- 1588747653
- 1619973922
- 1669593158
- 1679670822
All 187 Specialist providers in Beverly Hills · All Specialist providers in California