Dr. John K. Harrison, M.D.
Cardiology (Cardiovascular Disease Physician)
2100 Erwin Rd, Duke University Medical Center - Dumc 3331
Durham, NC 27710
- Medicare participating
At a glance
- Medical school
- New York University School of Medicine (1984)
- Years since graduation
- 42
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 373
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
- 1984Medical school: New York University School of Medicine
- 2006Registered 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 32717
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Duke University Hospital Durham, NC
Medical groups
- Duke Health Integrated Practice, Inc (3,185 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
- 373
- Services billed
- 826
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 175 | 166 |
| Established patient office or other outpatient visit, 40-54 minutes | 91 | 83 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 90 | 86 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 74 | 44 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 67 | 56 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 63 | 58 |
| Established patient office or other outpatient visit, 20-29 minutes | 55 | 52 |
| Replacement of aortic valve by through femoral artery | 48 | 48 |
| Insertion of tube in right heart chambers and coronary artery for diagnosis with review by radiologist | 24 | 24 |
| Hospital discharge day management, more than 30 minutes | 22 | 21 |
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 |
|---|---|
| Metoprolol Succinate Other prescribers in Durham, NC | 47 |
| Amoxicillin Other prescribers in Durham, NC | 42 |
| Eliquis (apixaban) Other prescribers in Durham, NC | 30 |
| Spironolactone Other prescribers in Durham, NC | 26 |
| Rosuvastatin Calcium Other prescribers in Durham, NC | 25 |
| Furosemide Other prescribers in Durham, NC | 25 |
| Lisinopril Other prescribers in Durham, NC | 24 |
| Amlodipine Besylate Other prescribers in Durham, NC | 24 |
| Atorvastatin Calcium Other prescribers in Durham, NC | 19 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Durham, NC | 12 |
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, 2 companies reported 2 payments worth $205 in total to this clinician.
| Edwards Lifesciences Corporation | $107 |
|---|---|
| W. L. Gore & Associates, Inc. | $97.26 |
| Food and Beverage | $205 |
|---|
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.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $16,702 in research payments for these studies, mostly to the institutions running them.
- TAVR Low Risk
Medtronic, Inc. - PARTNER II (2010-12)
Edwards Lifesciences Corporation
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.