Dyann Chao, M.D.
NPI 1235422155 · Pediatrics Physician · San Francisco, CA
Dyann Chao, M.D. is a Pediatrics Physician provider in San Francisco, CA (NPI 1235422155).
Provider details
- NPI number
- 1235422155
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 25455 (LA)
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
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 350 Rhode Island St Ste 200San Francisco, CA 94103-5188Phone: (415) 826-7575Fax: (415) 369-1393
Registry dates
- Enumerated
- 2011-05-25
- Last updated
- 2023-03-07
Frequently asked questions
- What is Dyann Chao's NPI number?
- Dyann Chao's National Provider Identifier (NPI) is 1235422155, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dyann Chao's specialty?
- Dyann Chao is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Dyann Chao located?
- Dyann Chao's practice location on file with NPPES is 3838 California St Rm 510, San Francisco, CA 94118.
- What is Dyann Chao's phone number?
- The practice phone number listed in the NPPES registry for Dyann Chao is (415) 600-2403.
- Is Dyann Chao's NPI active?
- Yes — Dyann Chao's NPI (1235422155) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.