San Tsai, MD
NPI 1689776015 · Obstetrics & Gynecology Physician · Merrillville, IN
San Tsai, MD is a Obstetrics & Gynecology Physician provider in Merrillville, IN (NPI 1689776015).
Provider details
- NPI number
- 1689776015
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 01026970A (IN)
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
- 2006-09-05
- Last updated
- 2011-09-15
Frequently asked questions
- What is San Tsai's NPI number?
- San Tsai's National Provider Identifier (NPI) is 1689776015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is San Tsai's specialty?
- San Tsai is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is San Tsai located?
- San Tsai's practice location on file with NPPES is 5490 Broadway, Merrillville, IN 46410-1675.
- What is San Tsai's phone number?
- The practice phone number listed in the NPPES registry for San Tsai is (219) 884-2500.
- Is San Tsai's NPI active?
- Yes — San Tsai's NPI (1689776015) is active in the NPPES registry as of the last update on 2011-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.