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John Tsai, MD
NPI 1033161641 · Family Medicine Physician · Pasadena, CA
John Tsai, MD is a Family Medicine Physician provider in Pasadena, CA (NPI 1033161641).
Provider details
- NPI number
- 1033161641
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G69320 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1239 Arden Road Mc1-8
Pasadena, CA 91125-1469
Phone: (626) 395-6393
Street-level locationGet directions
Mailing address
914 Coronado Dr
Arcadia, CA 91007-6424
Registry dates
- Enumerated
- 2006-05-16
- Last updated
- 2024-05-04
- Certified
- 2024-05-04
Frequently asked questions
- What is John Tsai's NPI number?
- John Tsai's National Provider Identifier (NPI) is 1033161641, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tsai's specialty?
- John Tsai is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Tsai located?
- John Tsai's practice location on file with NPPES is 1239 Arden Road Mc1-8, Pasadena, CA 91125-1469.
- What is John Tsai's phone number?
- The practice phone number listed in the NPPES registry for John Tsai is (626) 395-6393.
- Is John Tsai's NPI active?
- Yes — John Tsai's NPI (1033161641) is active in the NPPES registry as of the last update on 2024-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.