Alan Marcus, M.D
Opted out of Medicare from September 2022 to September 2028. Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D) in Laguna Hills, California, licensed in CA, with an NPI issued in September 2006. Part D covered 8,037 prescriptions written in 2024, 63% of them generic. Abbvie Inc. was the largest of 40 companies reporting payments in 2025, $5,243 in all, mostly food and beverage.
Overview
| NPI | 1275631657 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Sep 20, 2006 |
| Last updated in NPPES | Nov 14, 2025 |
| Certified by provider | Nov 14, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A39696 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Sep 22, 2022 – Sep 22, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 8,037 · 17,589 30-day fills |
|---|---|
| Patients | 351 |
| Total drug cost | $2,993,605 |
| Generic share | 63% of claims |
Industry payments (Open Payments)
- 2025$5,243 · 282 payments from 40 companies
- 2024$4,573 · 282 payments from 37 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $842.84 | 42 |
| Novo Nordisk Inc | $781.49 | 34 |
| Aimmune Therapeutics, Inc. | $692.26 | 33 |
| Amgen Inc. | $301.08 | 18 |
| Lilly USA, LLC | $296.63 | 15 |
What the 2025 payments were for
- Food and Beverage$5,073 · 280 payments
- Education$169.98 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in California →