David Humphrey Drenning, M.D.
NPI 1437129152ActiveIndividual· Internal Medicine, Interventional Cardiology· Huntsville, AL
Internal Medicine, Interventional Cardiology (M.D.) in Huntsville, Alabama, trained at University of Tennessee, Hsc, College of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $1,155,599 for 5,438 claims, against $74,721 paid for services in 2024. Zoll Services LLC (A/K/A Zoll Lifecor Corp) was the largest of 18 companies reporting payments in 2025, $1,357 in all, mostly food and beverage.
Overview
| NPI | 1437129152 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 25, 2006 |
| Last updated in NPPES | May 8, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 18148 | AL |
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 - Interventional Cardiology (AL); Practitioner - Cardiovascular Disease (Cardiology) (NM) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 663 |
|---|---|
| Services billed | 1,665 across 35 procedure codes |
| Paid by Medicare | $74,721 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,438 · 13,390 30-day fills |
|---|---|
| Patients | 740 |
| Total drug cost | $1,155,599 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Interventional Cardiology |
Medical group
- Hh Heart Center, LLCMadison, AL · 93 clinicians
Hospital affiliations
- Huntsville HospitalHuntsville, AL
- Marshall Medical CentersBoaz, AL
Industry payments (Open Payments)
- 2025$1,357 · 56 payments from 18 companies
- 2024$2,202 · 88 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $181.17 | 5 |
| Novartis Pharmaceuticals Corporation | $158.44 | 8 |
| Pfizer Inc. | $139.12 | 7 |
| Boston Scientific Corporation | $128.44 | 2 |
| Novo Nordisk Inc | $89.92 | 5 |
What the 2025 payments were for
- Food and Beverage$1,357 · 56 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 interventional cardiologists in Huntsville · All interventional cardiologists in Alabama