Alexander C. Gatzimos, M.D.,JD
NPI 1548476120ActiveIndividual· Internal Medicine· Mishawaka, IN
Internal Medicine (M.D.,JD) in Mishawaka, Indiana, trained at Tufts University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $2,000,652 for 16,828 claims, against $84,990 paid for services in 2024. Axsome Therapeutics, Inc. was the largest of 23 companies reporting payments in 2025, $12,812 in all, mostly honoraria.
Overview
| NPI | 1548476120 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D.,JD |
| Sole proprietor | No |
| NPI issued | May 14, 2007 |
| Last updated in NPPES | Jul 25, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 01036818A | IN |
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 - Internal Medicine (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 1,877 across 53 procedure codes |
| Paid by Medicare | $84,990 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16,828 · 22,035 30-day fills |
|---|---|
| Patients | 211 |
| Total drug cost | $2,000,652 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Memorial Hospital of South BendSouth Bend, IN
- Northwest Health - StarkeKnox, IN
- Saint Joseph Regional Medical CenterMishawaka, IN
Other facilities
- Saint Joseph Vna Home CareHome health agency · South Bend, IN
Industry payments (Open Payments)
- 2025$12,812 · 167 payments from 23 companies
- 2024$3,579 · 162 payments from 27 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $6,560 | 14 |
| Otsuka America Pharmaceutical, Inc. | $3,116 | 4 |
| Astrazeneca Pharmaceuticals LP | $672.23 | 34 |
| Abbvie Inc. | $423.21 | 24 |
| Viatris Specialty LLC | $375.11 | 15 |
What the 2025 payments were for
- Honoraria$6,125 · 4 payments
- Food and Beverage$3,544 · 160 payments
- Consulting Fee$3,078 · 1 payment
- Education$65.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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