John Alexander
NPI 1831282094 · Cardiovascular Disease Physician · Durham, NC
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Alexander is a Cardiovascular Disease Physician provider in Durham, NC (NPI 1831282094).
Provider details
- NPI number
- 1831282094
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 96-00017 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,290 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 499 | $63 |
| Heart Muscle Strain Imaging93356 | 333 | $11 |
| 3d Radiographic Procedure With Computerized Image Postprocessing76377 | 249 | $35 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 223 | $179 |
| Heart Muscle Strain Imaging93356 | 190 | $34 |
| 3d Radiographic Procedure With Computerized Image Postprocessing76377 | 83 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 65 | 26 |
| Carvedilol | 33 | 13 |
| Losartan Potassium | 29 | 12 |
| Metoprolol Succinate | 29 | 19 |
| Amlodipine Besylate | 24 | 11 |
| Apixabanbrand: Eliquis | 23 | — |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,000 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2013-03-21
Frequently asked questions
- What is John Alexander's NPI number?
- John Alexander's National Provider Identifier (NPI) is 1831282094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Alexander's specialty?
- John Alexander is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Alexander located?
- John Alexander's practice location on file with NPPES is Duke University Medical Ctr, Durham, NC 27710-0001.
- What is John Alexander's phone number?
- The practice phone number listed in the NPPES registry for John Alexander is (919) 620-4467.
- Does John Alexander accept Medicare?
- John Alexander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Alexander's NPI active?
- Yes — John Alexander's NPI (1831282094) is active in the NPPES registry as of the last update on 2013-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.