William Stephenson, M.D.
NPI 1356385520 · Diagnostic Radiology Physician · Burlingame, CA
William Stephenson, M.D. is a Diagnostic Radiology Physician provider in Burlingame, CA (NPI 1356385520).
Provider details
- NPI number
- 1356385520
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G52164 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-16
- Last updated
- 2009-02-10
Frequently asked questions
- What is William Stephenson's NPI number?
- William Stephenson's National Provider Identifier (NPI) is 1356385520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Stephenson's specialty?
- William Stephenson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Stephenson located?
- William Stephenson's practice location on file with NPPES is 1783 El Camino Real, Burlingame, CA 94010-3205.
- What is William Stephenson's phone number?
- The practice phone number listed in the NPPES registry for William Stephenson is (650) 696-5515.
- Is William Stephenson's NPI active?
- Yes — William Stephenson's NPI (1356385520) is active in the NPPES registry as of the last update on 2009-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.