Dr. David B. Walker, M.D.
Cardiology (Cardiovascular Disease Physician)
- Medicare participating
At a glance
- Medical school
- University of South Carolina School of Medicine (2006)
- Years since graduation
- 20
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 1,662
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Medical school: University of South Carolina School of Medicine
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Cardiovascular Disease Physician primary
NC license 2009-01042
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Unc Hospitals Chapel Hill, NC
- Rex Hospital Raleigh, NC
- Johnston Health Smithfield, NC
- Betsy Johnson Regional Hospital Dunn, NC
Medical groups
- North Carolina Mg LLC (751 clinicians)
- Rex Hospital Inc (15 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 1,662
- Services billed
- 11,544
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Intensive cardiac rehabilitation; with or without continuous ecg monitoring with exercise, per session | 6,480 | 250 |
| Intensive cardiac rehabilitation; with or without continuous ecg monitoring; without exercise, per session | 1,316 | 248 |
| Established patient office or other outpatient visit, 30-39 minutes | 920 | 660 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 720 | 585 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 683 | 540 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | 317 | 280 |
| Injection, regadenoson, 0.1 mg | 304 | 76 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 284 | 250 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 281 | 129 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 180 | 101 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Eliquis (apixaban) Other prescribers in Raleigh, NC | 940 |
| Metoprolol Succinate Other prescribers in Raleigh, NC | 758 |
| Amlodipine Besylate Other prescribers in Raleigh, NC | 384 |
| Furosemide Other prescribers in Raleigh, NC | 325 |
| Atorvastatin Calcium Other prescribers in Raleigh, NC | 320 |
| Metoprolol Tartrate Other prescribers in Raleigh, NC | 316 |
| Rosuvastatin Calcium Other prescribers in Raleigh, NC | 297 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Raleigh, NC | 271 |
| Repatha Sureclick (evolocumab) Other prescribers in Raleigh, NC | 271 |
| Carvedilol Other prescribers in Raleigh, NC | 242 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 10 companies reported 16 payments worth $569 in total to this clinician.
| Biosense Webster, Inc. | $161 |
|---|---|
| Alnylam Pharmaceuticals Inc. | $159 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $61.00 |
| Novo Nordisk Inc | $47.81 |
| E.r. Squibb & Sons, L.l.c. | $41.29 |
| Medtronic, Inc. | $21.99 |
| Zoll Services LLC (a/k/a Zoll Lifecor Corp) | $20.03 |
| Amgen Inc. | $19.59 |
| Food and Beverage | $569 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.