John A. Ambrose, MD
NPI 1598795429ActiveIndividual· Internal Medicine, Cardiovascular Disease· Fresno, CA
Internal Medicine, Cardiovascular Disease (MD) with Central California Faculty Medical Group Inc and 1 other group, practicing in Fresno, California. Their prescriptions cost Medicare Part D more than their services did: $151,710 for 1,168 claims, against $74,494 paid for services in 2024. Medtronic, Inc. reported $131.96 in payments in 2025, mostly food and beverage. Lists Adventist Health Hanford and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1598795429 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 4, 2006 |
| Last updated in NPPES | Dec 23, 2024 |
| Certified by provider | Dec 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | G87536 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 3,228 |
|---|---|
| Services billed | 4,704 across 24 procedure codes |
| Paid by Medicare | $74,494 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,168 · 2,802 30-day fills |
|---|---|
| Patients | 214 |
| Total drug cost | $151,710 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1972 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Central California Faculty Medical Group IncFresno, CA · 265 clinicians
- Fresno Community Hospital and Medical CenterFresno, CA · 54 clinicians
Hospital affiliations
- Adventist Health HanfordHanford, CA
- Clovis Community Medical CenterClovis, CA
- Community Regional Medical CenterFresno, CA
- Kaweah Health Medical CenterVisalia, CA
- Saint Agnes Medical CenterFresno, CA
Industry payments (Open Payments)
- 2025$131.96 · 2 payments from 1 company
- 2024$78.18 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $131.96 | 2 |
What the 2025 payments were for
- Food and Beverage$131.96 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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