Stuart Fischer, M.D.
NPI 1083656086ActiveIndividual· Internal Medicine, Cardiovascular Disease· Los Alamitos, CA
Internal Medicine, Cardiovascular Disease (M.D.) in Los Alamitos, California, trained at Js Weill Medical College, Cornell University (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $446,055 for 1,732 claims, against $58,490 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 14 companies reporting payments in 2025, $858.26 in all, mostly food and beverage.
Overview
| NPI | 1083656086 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | G47229 | CA |
| Internal Medicine, Interventional Cardiology | 207RI0011X | G47229 | 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 | 161 |
|---|---|
| Services billed | 828 across 35 procedure codes |
| Paid by Medicare | $58,490 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,732 · 4,459 30-day fills |
|---|---|
| Patients | 217 |
| Total drug cost | $446,055 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Los Alamitos Internal Medical Group IncLos Alamitos, CA · 7 clinicians
Industry payments (Open Payments)
- 2025$858.26 · 39 payments from 14 companies
- 2024$1,270 · 66 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $170.95 | 9 |
| Abiomed | $157.41 | 6 |
| Merck Sharp & Dohme LLC | $116.58 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $68.85 | 3 |
| Pfizer Inc. | $65.73 | 3 |
What the 2025 payments were for
- Food and Beverage$858.26 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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