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Gilbert Chang, MD
NPI 1538195755 · Pediatrics Physician · Fairfield, CA
Gilbert Chang, MD is a Pediatrics Physician provider in Fairfield, CA (NPI 1538195755).
Provider details
- NPI number
- 1538195755
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A70026 (CA)
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
5140 Business Center Dr
Suite 200
Fairfield, CA 94534-1658
Phone: (707) 864-9999
Fax: (707) 864-5376
Street-level locationGet directions
Mailing address
5140 Business Center Dr
Fairfield, CA 94534-1793
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2009-03-25
Frequently asked questions
- What is Gilbert Chang's NPI number?
- Gilbert Chang's National Provider Identifier (NPI) is 1538195755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gilbert Chang's specialty?
- Gilbert Chang is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Gilbert Chang located?
- Gilbert Chang's practice location on file with NPPES is 5140 Business Center Dr, Fairfield, CA 94534-1658.
- What is Gilbert Chang's phone number?
- The practice phone number listed in the NPPES registry for Gilbert Chang is (707) 864-9999.
- Is Gilbert Chang's NPI active?
- Yes — Gilbert Chang's NPI (1538195755) is active in the NPPES registry as of the last update on 2009-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.