Inja Hwang, MD
NPI 1821216581 · Family Medicine Physician · Martinez, CA
Inja Hwang, MD is a Family Medicine Physician provider in Martinez, CA (NPI 1821216581).
Provider details
- NPI number
- 1821216581
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- C43359 (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
- 2007-04-20
- Last updated
- 2025-09-11
Frequently asked questions
- What is Inja Hwang's NPI number?
- Inja Hwang's National Provider Identifier (NPI) is 1821216581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Inja Hwang's specialty?
- Inja Hwang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Inja Hwang located?
- Inja Hwang's practice location on file with NPPES is 1000 Ward Street, Martinez, CA 94553.
- What is Inja Hwang's phone number?
- The practice phone number listed in the NPPES registry for Inja Hwang is (925) 335-4707.
- Is Inja Hwang's NPI active?
- Yes — Inja Hwang's NPI (1821216581) 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.