Alexander F. Castellanos, MD
NPI 1770771511ActiveIndividual· Family Medicine· Templeton, CA
Family Medicine (MD) in Templeton, California, trained at Stanford University School of Medicine (class of 1977). In 2024 Medicare paid $287,239 for 277 patients, and Part D covered 2,177 of their prescriptions, 87% of them generic. Progenics Pharmaceuticals, Inc. reported $124.37 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1770771511 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 5, 2007 |
| Last updated in NPPES | Dec 26, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G37303 | 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) | Enrolled Practitioner - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 277 |
|---|---|
| Services billed | 73,055 across 88 procedure codes |
| Paid by Medicare | $287,239 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,177 · 5,467 30-day fills |
|---|---|
| Patients | 221 |
| Total drug cost | $100,855 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Family Practice |
Medical group
- David B. HammerTempleton, CA · 123 clinicians
Hospital affiliations
- Adventist Health Twin CitiesTempleton, CA
- French Hospital Medical CenterSan Luis Obispo, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
Industry payments (Open Payments)
- 2025$124.37 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Progenics Pharmaceuticals, Inc. | $124.37 | 1 |
What the 2025 payments were for
- Food and Beverage$124.37 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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