OrganizationActive
Clark S. Tsai, M.D., Inc.
NPI 1487930996 · Ophthalmology Physician · Oakland, CA
Provider details
- NPI number
- 1487930996
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Clark Tsai, Ceo(925) 864-8886
- License
- G76192 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(80/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
350 30th St
Suite 444
Oakland, CA 94609-3424
Phone: (925) 864-8886
Fax: (925) 689-7748
Street-level locationGet directions
Mailing address
2700 Grant St
Concord, CA 94520-2266
Registry dates
- Enumerated
- 2011-10-28
- Last updated
- 2011-12-14
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.