IndividualActive
Sonya Chen-Hsieh, MD
NPI 1528017894 · Family Medicine Physician · San Marino, CA
Sonya Chen-Hsieh, MD is a Family Medicine Physician provider in San Marino, CA (NPI 1528017894).
Provider details
- NPI number
- 1528017894
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036110187 (IL)
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
375 Huntington Dr
Suite G
San Marino, CA 91108-2357
Phone: (626) 441-4231
Street-level locationGet directions
Mailing address
375 Huntington Dr Ste G
San Marino, CA 91108-2357
Registry dates
- Enumerated
- 2006-05-06
- Last updated
- 2008-09-29
Frequently asked questions
- What is Sonya Chen-Hsieh's NPI number?
- Sonya Chen-Hsieh's National Provider Identifier (NPI) is 1528017894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonya Chen-Hsieh's specialty?
- Sonya Chen-Hsieh is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sonya Chen-Hsieh located?
- Sonya Chen-Hsieh's practice location on file with NPPES is 375 Huntington Dr, San Marino, CA 91108-2357.
- What is Sonya Chen-Hsieh's phone number?
- The practice phone number listed in the NPPES registry for Sonya Chen-Hsieh is (626) 441-4231.
- Is Sonya Chen-Hsieh's NPI active?
- Yes — Sonya Chen-Hsieh's NPI (1528017894) is active in the NPPES registry as of the last update on 2008-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.