John Hollowell, MD
NPI 1083601520ActiveIndividual· Internal Medicine, Cardiovascular Disease· Plano, TX
Internal Medicine, Cardiovascular Disease (MD) in Plano, Texas, trained at Louisiana State University School of Medicine in Shreveport (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $1,389,732 for 7,703 claims, against $218,492 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 19 companies reporting payments in 2025, $979.87 in all, mostly food and beverage.
Overview
| NPI | 1083601520 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 30, 2005 |
| Last updated in NPPES | Jun 10, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | J2605 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,749 |
|---|---|
| Services billed | 6,780 across 54 procedure codes |
| Paid by Medicare | $218,492 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,703 · 20,703 30-day fills |
|---|---|
| Patients | 1,038 |
| Total drug cost | $1,389,732 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in Shreveport |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2025$979.87 · 47 payments from 19 companies
- 2024$1,324 · 67 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $185.97 | 10 |
| Scpharmaceuticals Inc. | $91.90 | 5 |
| Azurity Pharmaceuticals, Inc. | $83.96 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $67.06 | 3 |
| Bridgebio Pharma, Inc. | $62.79 | 3 |
What the 2025 payments were for
- Food and Beverage$979.87 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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