Sylvia Friedberg, M.D.
NPI 1396886925 · Internal Medicine Physician · Portola Valley, CA
Sylvia Friedberg, M.D. is a Internal Medicine Physician provider in Portola Valley, CA (NPI 1396886925).
Provider details
- NPI number
- 1396886925
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G49620 (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
19 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
- 2007-02-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sylvia Friedberg's NPI number?
- Sylvia Friedberg's National Provider Identifier (NPI) is 1396886925, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Friedberg's specialty?
- Sylvia Friedberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sylvia Friedberg located?
- Sylvia Friedberg's practice location on file with NPPES is 281 W Floresta Way, Portola Valley, CA 94028-7536.
- What is Sylvia Friedberg's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Friedberg is (650) 854-5183.
- Is Sylvia Friedberg's NPI active?
- Yes — Sylvia Friedberg's NPI (1396886925) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.