Donald Tsai, MD
NPI 1407948987 · Family Medicine Physician · Barstow, CA
Donald Tsai, MD is a Family Medicine Physician provider in Barstow, CA (NPI 1407948987).
Provider details
- NPI number
- 1407948987
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A30532 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-09-29
- Last updated
- 2025-09-11
Frequently asked questions
- What is Donald Tsai's NPI number?
- Donald Tsai's National Provider Identifier (NPI) is 1407948987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Tsai's specialty?
- Donald Tsai is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Tsai located?
- Donald Tsai's practice location on file with NPPES is 801 East Mountainview Street, Barstow, CA 92341.
- What is Donald Tsai's phone number?
- The practice phone number listed in the NPPES registry for Donald Tsai is (760) 256-8901.
- Is Donald Tsai's NPI active?
- Yes — Donald Tsai's NPI (1407948987) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.