Robert M. Castro, DO
Internal Medicine (DO) in Santa Ana, California, licensed in CA, with an NPI issued in February 2007. Their prescriptions cost Medicare Part D more than their services did: $585,975 for 2,481 claims, against $107,994 paid for services in 2024. Abbott Laboratories was the largest of 13 companies reporting payments in 2025, $1,025 in all, mostly food and beverage. Lists San Antonio Regional Hospital as a hospital affiliation. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1285777813 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Feb 14, 2007 |
| Last updated in NPPES | May 27, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A9770 | CA |
| Family Medicine | 207Q00000X | 20A9770 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Robert Timothy Castro · Technician | 1128b5 | Mar 18, 2004 | Oxnard, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 - Interventional Cardiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 332 |
|---|---|
| Services billed | 1,275 across 42 procedure codes |
| Paid by Medicare | $107,994 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,481 · 6,764 30-day fills |
|---|---|
| Patients | 361 |
| Total drug cost | $585,975 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Hospital affiliation
- San Antonio Regional HospitalUpland, CA
Industry payments (Open Payments)
- 2025$1,025 · 48 payments from 13 companies
- 2024$1,487 · 59 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $196.27 | 12 |
| Pfizer Inc. | $190.46 | 8 |
| Boston Scientific Corporation | $140.27 | 6 |
| Amgen Inc. | $123.92 | 6 |
| Medtronic, Inc. | $105.74 | 3 |
What the 2025 payments were for
- Food and Beverage$1,009 · 47 payments
- Education$16.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 72 internal medicine physicians in Santa Ana · All internal medicine physicians in California