Karen Ann Fong, MD
NPI 1851396816ActiveIndividual· Internal Medicine· San Luis Obispo, CA
Internal Medicine (MD) in San Luis Obispo, California, trained at University of California, Geffen School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $697,429 for 4,837 claims, against $82,728 paid for services in 2024. Grifols USA, LLC was the largest of 4 companies reporting payments in 2025, $161.94 in all, mostly food and beverage.
Overview
| NPI | 1851396816 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 16, 2005 |
| Last updated in NPPES | Nov 22, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G70251 | CA |
| Pediatrics | 208000000X | G070251 | 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 - Pediatric Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 202 |
|---|---|
| Services billed | 1,137 across 38 procedure codes |
| Paid by Medicare | $82,728 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,837 · 10,343 30-day fills |
|---|---|
| Patients | 222 |
| Total drug cost | $697,429 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Pediatric Medicine |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Adventist Health Sierra VistaSan Luis Obispo, CA
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
- Dignity Health Home HealthHome health agency · Santa Maria, CA
- Mission Home Health of Central CoastHome health agency · Grover Beach, CA
Industry payments (Open Payments)
- 2025$161.94 · 6 payments from 4 companies
- 2024$231.59 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Grifols USA, LLC | $98.32 | 3 |
| Bayer Healthcare Pharmaceuticals Inc. | $25.00 | 1 |
| Amgen Inc. | $23.61 | 1 |
| Glaxosmithkline, LLC. | $15.01 | 1 |
What the 2025 payments were for
- Food and Beverage$161.94 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in San Luis Obispo
- 1154346377
- 1336272871
- 1407288574
- 1417586835
- 1437476439
- 1528163870
- 1639394836
- 1750367587
- 1043692866
- 1063495356
- 1114996055
- 1205839818
All 52 internal medicine physicians in San Luis Obispo · All internal medicine physicians in California