Stuart Young, M.D.
NPI 1639552938 · Diagnostic Radiology Physician · Portola Valley, CA
Stuart Young, M.D. is a Diagnostic Radiology Physician provider in Portola Valley, CA (NPI 1639552938).
Provider details
- NPI number
- 1639552938
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C37626 (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
10 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
- 2015-07-04
- Last updated
- 2015-07-04
Frequently asked questions
- What is Stuart Young's NPI number?
- Stuart Young's National Provider Identifier (NPI) is 1639552938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stuart Young's specialty?
- Stuart Young is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Young located?
- Stuart Young's practice location on file with NPPES is 45 Las Piedras St, Portola Valley, CA 94028-8148.
- What is Stuart Young's phone number?
- The practice phone number listed in the NPPES registry for Stuart Young is (650) 207-1987.
- Is Stuart Young's NPI active?
- Yes — Stuart Young's NPI (1639552938) is active in the NPPES registry as of the last update on 2015-07-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.