William Fearon, M.D.
NPI 1770671455 · Interventional Cardiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Fearon, M.D. is a Interventional Cardiology Physician provider in Stanford, CA (NPI 1770671455).
Provider details
- NPI number
- 1770671455
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A54553 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
578 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 147 | $75 |
| Insertion of Tube in Coronary Artery for Diagnosis With Review By Radiologist93454 | 87 | $208 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 82 | $13 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 68 | $777 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 59 | $150 |
| Ultrasound Evaluation of Heart Blood Vessel During Diagnosis Or Treatment, Initial Vessel93571 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 158 | 49 |
| Atorvastatin Calcium | 142 | 41 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 95 | 34 |
| Amlodipine Besylate | 77 | 24 |
| Ezetimibe | 64 | 22 |
| Lisinopril | 63 | 17 |
| Carvedilol | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$959 across 10 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
- 2006-10-10
- Last updated
- 2024-04-15
- Certified
- 2024-04-15
Frequently asked questions
- What is William Fearon's NPI number?
- William Fearon's National Provider Identifier (NPI) is 1770671455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Fearon's specialty?
- William Fearon is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Fearon located?
- William Fearon's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is William Fearon's phone number?
- The practice phone number listed in the NPPES registry for William Fearon is (650) 723-4000.
- Does William Fearon accept Medicare?
- William Fearon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Fearon's NPI active?
- Yes — William Fearon's NPI (1770671455) is active in the NPPES registry as of the last update on 2024-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.