William Douglas Knopf, MD
NPI 1922007541ActiveIndividual· Internal Medicine, Cardiovascular Disease· Macon, GA
Internal Medicine, Cardiovascular Disease (MD) in Macon, Georgia, trained at Emory University School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $2,431,498 for 13,207 claims, against $1,087,487 paid for services in 2024. Zoll Services LLC (A/K/A Zoll Lifecor Corp) was the largest of 10 companies reporting payments in 2025, $679.42 in all, mostly food and beverage.
Overview
| NPI | 1922007541 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 15, 2005 |
| Last updated in NPPES | Mar 17, 2022 |
| Certified by provider | Mar 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 14970 | TN |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 023469 | GA |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 023469 | GA |
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 (FL); Practitioner - Cardiovascular Disease (Cardiology) (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,294 |
|---|---|
| Services billed | 20,942 across 97 procedure codes |
| Paid by Medicare | $1,087,487 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,207 · 25,344 30-day fills |
|---|---|
| Patients | 1,538 |
| Total drug cost | $2,431,498 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical groups
- Health Services of Central GeorgiaMacon, GA · 300 clinicians
- Crh Physician Practices, LLCDouglas, GA · 38 clinicians
- Coffee Regional Medical Center IncDouglas, GA · 30 clinicians
- Middle Georgia Heart and Vascular Center, LLCForsyth, GA · 8 clinicians
Hospital affiliations
- Atrium Health Navicent PeachByron, GA
- Atrium Health Navicent the Medical CenterMacon, GA
- Coffee Regional Medical Center, IncDouglas, GA
- Emory Houston Hospital Warner RobinsWarner Robins, GA
- Navicent Health BaldwinMilledgeville, GA
Other facilities
- Enhabit Home HealthHome health agency · Macon, GA
Industry payments (Open Payments)
- 2025$679.42 · 22 payments from 10 companies
- 2024$347.27 · 16 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $167.56 | 7 |
| Shockwave Medical, Inc | $149.81 | 1 |
| Inspire Medical Systems, Inc. | $111.44 | 2 |
| Kestra Medical Technology Services, Inc. | $56.40 | 2 |
| Novartis Pharmaceuticals Corporation | $53.19 | 3 |
What the 2025 payments were for
- Food and Beverage$679.42 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 cardiologists in Macon · All cardiologists in Georgia