William Keen Jr., MD
NPI 1962561571 · Cardiovascular Disease Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Keen Jr., MD is a Cardiovascular Disease Physician provider in San Diego, CA (NPI 1962561571).
Provider details
- NPI number
- 1962561571
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G73551 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
764 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 305 | $69 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 89 | $201 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $137 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $177 |
| 3d Radiographic Procedure76376 | 28 | $10 |
| Ultrasound of Heart With Continuous Electrocardiogram (ecg) During Rest, Exercise And/Or Drug Induced Stress With Review and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 54 | 17 |
| Atorvastatin Calcium | 36 | 12 |
| Rosuvastatin Calcium | 35 | 16 |
| Losartan Potassium | 34 | 14 |
| Ezetimibe | 28 | 14 |
| Carvedilol | 25 | — |
| Metoprolol Succinate | 21 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2022-02-22
- Certified
- 2022-02-22
Frequently asked questions
- What is William Keen Jr.'s NPI number?
- William Keen Jr.'s National Provider Identifier (NPI) is 1962561571, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Keen Jr.'s specialty?
- William Keen Jr. is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Keen Jr. located?
- William Keen Jr.'s practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is William Keen Jr.'s phone number?
- The practice phone number listed in the NPPES registry for William Keen Jr. is (800) 926-8273.
- Does William Keen Jr. accept Medicare?
- William Keen Jr. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Keen Jr.'s NPI active?
- Yes — William Keen Jr.'s NPI (1962561571) is active in the NPPES registry as of the last update on 2022-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.