Mark Andrew Zenker, M.D.
NPI 1316985120ActiveIndividual· Internal Medicine, Cardiovascular Disease· Nashville, TN
Internal Medicine, Cardiovascular Disease (M.D.) in Nashville, Tennessee, trained at Southern Illinois University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $3,502,704 for 5,549 claims, against $121,696 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 7 companies reporting payments in 2025, $71,254 in all, mostly speaking and faculty fees.
Overview
| NPI | 1316985120 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2006 |
| Last updated in NPPES | Jul 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 21038 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (KY); Practitioner - Cardiovascular Disease (Cardiology) (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 923 |
|---|---|
| Services billed | 3,028 across 53 procedure codes |
| Paid by Medicare | $121,696 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,549 · 13,989 30-day fills |
|---|---|
| Patients | 714 |
| Total drug cost | $3,502,704 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Southern Illinois University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- Saint Thomas Medical PartnersNashville, TN · 590 clinicians
Hospital affiliations
- Ascension Saint Thomas HospitalNashville, TN
- Saint Thomas Rutherford HospitalMurfreesboro, TN
- Vanderbilt Clarksville HospitalClarksville, TN
- Vanderbilt University Medical CenterNashville, TN
- West Tennessee Healthcare Henry County HospitalParis, TN
Industry payments (Open Payments)
- 2025$71,254 · 66 payments from 7 companies
- 2024$54,386 · 55 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $70,705 | 54 |
| Novo Nordisk Inc | $211.86 | 2 |
| Alnylam Pharmaceuticals Inc. | $170.13 | 5 |
| Abbott Laboratories | $79.64 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $37.74 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$59,874 · 11 payments
- Travel and Lodging$9,587 · 19 payments
- Food and Beverage$1,793 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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