Alessandro Castellarin, M.D.
NPI 1689773244ActiveIndividual· Ophthalmology, Retina Specialist· Santa Barbara, CA
Ophthalmology, Retina Specialist (M.D.) with Sansum Clinic and 1 other group, practicing in Santa Barbara, California. In 2024 Medicare paid $6,431,002 for 2,275 patients, and Part D covered 1,061 of their prescriptions, 66% of them generic. Regeneron Healthcare Solutions, Inc. was the largest of 12 companies reporting payments in 2025, $2,074 in all, mostly food and beverage. Lists Santa Barbara Cottage Hospital as a hospital affiliation.
Overview
| NPI | 1689773244 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 21, 2006 |
| Last updated in NPPES | Jun 6, 2022 |
| Certified by provider | Jun 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Retina Specialist Primary | 207WX0107X | A85976 | CA |
| Specialist | 174400000X | A85976 | 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 - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,275 |
|---|---|
| Services billed | 64,608 across 55 procedure codes |
| Paid by Medicare | $6,431,002 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,061 · 1,674 30-day fills |
|---|---|
| Patients | 291 |
| Total drug cost | $176,535 |
| Generic share | 66% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Ophthalmology |
Medical groups
- Sansum ClinicSanta Barbara, CA · 320 clinicians
- California Retina ConsultantsValencia, CA · 12 clinicians
Hospital affiliation
- Santa Barbara Cottage HospitalSanta Barbara, CA
Industry payments (Open Payments)
- 2025$2,074 · 47 payments from 12 companies
- 2024$4,582 · 51 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $487.17 | 10 |
| Regeneron Pharmaceuticals, Inc. | $377.75 | 4 |
| Apellis Pharmaceuticals, Inc. | $215.17 | 5 |
| Astellas Pharma US Inc | $201.86 | 6 |
| Harrow Eye, LLC | $183.17 | 5 |
What the 2025 payments were for
- Food and Beverage$2,074 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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