Dr. John Alexander
Cardiology (Cardiovascular Disease Physician)
- Medicare participating
At a glance
- Medical school
- Perelman School of Med at the University of Pennsylvania (1993)
- Years since graduation
- 33
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 1,012
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
- 1993Medical school: Perelman School of Med at the University of Pennsylvania
- 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 96-00017
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
- Duke Regional 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
- 1,012
- Services billed
- 2,391
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 733 | 723 |
| Heart muscle strain imaging | 495 | 490 |
| 3d radiographic procedure with computerized image postprocessing | 310 | 307 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 84 | 80 |
| Established patient office or other outpatient visit, 30-39 minutes | 68 | 63 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 58 | 25 |
| External shock to heart to regulate heart beat | 53 | 52 |
| Ultrasound of heart blood flow, valves and chambers, follow-up | 45 | 41 |
| Injection, regadenoson, 0.1 mg | 44 | 11 |
| Ultrasound of heart, follow-up | 44 | 36 |
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
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, 3 companies reported 7 payments worth $31,723 in total to this clinician.
| E.r. Squibb & Sons, L.l.c. | $22,443 |
|---|---|
| Novartis Pharmaceuticals Corporation | $6,480 |
| Eli Lilly and Company | $2,800 |
| Consulting Fee | $28,843 |
|---|---|
| Compensation for services other than consulting (speaking, faculty) | $2,880 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| E.r. Squibb & Sons, L.l.c. Oct 14, 2025 | Consulting Fee | $7,163 |
| E.r. Squibb & Sons, L.l.c. Oct 15, 2025 | Consulting Fee | $5,730 |
| E.r. Squibb & Sons, L.l.c. Apr 2, 2025 | Consulting Fee | $4,775 |
| E.r. Squibb & Sons, L.l.c. Apr 3, 2025 | Consulting Fee | $4,775 |
| Novartis Pharmaceuticals Corporation Oct 3, 2025 | Consulting Fee LEQVIO · Cardiology/Vascular Diseases | $3,600 |
| Novartis Pharmaceuticals Corporation Nov 10, 2025 | Compensation for services other than consulting (speaking, faculty) | $2,880 |
| Eli Lilly and Company Jul 14, 2025 | Consulting FeeCompany’s descriptionTHE REPORTED PAYMENT REFLECTS THE AMOUNT PROVIDED TO A THIRD PARTY EMPLOYER OR INSTITUTION IN CONNECTION WITH RESEARCH RELATED SERVICES PROVIDED BY THE COVERED RECIPIENT. LILLY DOES NOT KNOW HOW MUCH, IF ANY, OF THIS AMOUNT WAS ACTUALLY RECEIVED BY THE COVERED RECIPIENT. | $2,800 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
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.