Aaron Nizam, M.D.
NPI 1932593456ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Nashville, TN
Obstetrics & Gynecology, Gynecologic Oncology (M.D.) with Tristar Gynecology Oncology, LLC, practicing in Nashville, Tennessee. 151 Medicare patients in 2024, $610,759 paid; nearly all of their 217 Part D prescriptions were generic (93%). Glaxosmithkline, LLC. was the largest of 13 companies reporting payments in 2025, $1,503 in all, mostly food and beverage. Lists Cookeville Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1932593456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 23, 2015 |
| Last updated in NPPES | Aug 9, 2022 |
| Certified by provider | Aug 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | 66036 | TN |
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 - Obstetrics/Gynecology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 151 |
|---|---|
| Services billed | 20,009 across 84 procedure codes |
| Paid by Medicare | $610,759 |
Part D prescriptions in 2024
| Prescriptions (claims) | 217 · 238 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $7,357 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- Tristar Gynecology Oncology, LLCNashville, TN · 4 clinicians
Hospital affiliations
- Cookeville Regional Medical CenterCookeville, TN
- Tristar Centennial Medical CenterNashville, TN
- Tristar Hendersonville Medical CenterHendersonville, TN
- Tristar Skyline Medical CenterNashville, TN
- Tristar Summit Medical CenterHermitage, TN
Industry payments (Open Payments)
- 2025$1,503 · 59 payments from 13 companies
- 2024$1,805 · 68 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $306.97 | 14 |
| Merck Sharp & Dohme LLC | $255.14 | 9 |
| Abbvie Inc. | $240.75 | 8 |
| Eisai Inc. | $191.07 | 6 |
| Astrazeneca Pharmaceuticals LP | $137.10 | 7 |
What the 2025 payments were for
- Food and Beverage$1,477 · 58 payments
- Education$25.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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