Kathryn Rubio Rigonan, MD
NPI 1336234210ActiveIndividual· Internal Medicine· Fountain Valley, CA
Internal Medicine (MD) in Fountain Valley, California, licensed in CA, with an NPI issued in October 2006. Their prescriptions cost Medicare Part D more than their services did: $231,402 for 3,948 claims, against $39,071 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 5 companies reporting payments in 2025, $477.76 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 1 other hospital as hospital affiliations.
Overview
| NPI | 1336234210 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 4, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A51220 | 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 | 125 |
|---|---|
| Services billed | 465 across 13 procedure codes |
| Paid by Medicare | $39,071 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,948 · 10,027 30-day fills |
|---|---|
| Patients | 293 |
| Total drug cost | $231,402 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1975 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
Industry payments (Open Payments)
- 2025$477.76 · 24 payments from 5 companies
- 2024$418.99 · 22 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $251.26 | 15 |
| Amgen Inc. | $100.76 | 4 |
| Lilly USA, LLC | $58.20 | 2 |
| Merck Sharp & Dohme LLC | $35.02 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $32.52 | 1 |
What the 2025 payments were for
- Food and Beverage$477.76 · 24 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 111 internal medicine physicians in Fountain Valley · All internal medicine physicians in California