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Janet Tseng, M.D.
NPI 1023363231 · Family Medicine Physician · Sunnyvale, CA
Janet Tseng, M.D. is a Family Medicine Physician provider in Sunnyvale, CA (NPI 1023363231).
Provider details
- NPI number
- 1023363231
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A71916 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(79/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
1270 Lawrence Station Rd
Suite I
Sunnyvale, CA 94089-2264
Phone: (408) 364-6430
Street-level locationGet directions
Mailing address
1129 Cabot Pl
San Jose, CA 95129-2963
Registry dates
- Enumerated
- 2012-07-13
- Last updated
- 2012-07-13
Frequently asked questions
- What is Janet Tseng's NPI number?
- Janet Tseng's National Provider Identifier (NPI) is 1023363231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Tseng's specialty?
- Janet Tseng is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Tseng located?
- Janet Tseng's practice location on file with NPPES is 1270 Lawrence Station Rd, Sunnyvale, CA 94089-2264.
- What is Janet Tseng's phone number?
- The practice phone number listed in the NPPES registry for Janet Tseng is (408) 364-6430.
- Is Janet Tseng's NPI active?
- Yes — Janet Tseng's NPI (1023363231) is active in the NPPES registry as of the last update on 2012-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.