Lawrence Chang, MD
NPI 1619471893 · Pediatric Emergency Medicine (Pediatrics) Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lawrence Chang, MD is a Pediatric Emergency Medicine (Pediatrics) Physician provider in San Francisco, CA (NPI 1619471893).
Provider details
- NPI number
- 1619471893
- Entity type
- Individual
- Primary specialty
- Pediatric Emergency Medicine (Pediatrics) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 287301 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
8 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
- 2018-03-21
- Last updated
- 2024-09-25
- Certified
- 2024-09-18
Frequently asked questions
- What is Lawrence Chang's NPI number?
- Lawrence Chang's National Provider Identifier (NPI) is 1619471893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Chang's specialty?
- Lawrence Chang is listed in the NPPES registry with a primary specialty of Pediatric Emergency Medicine (Pediatrics) Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Chang located?
- Lawrence Chang's practice location on file with NPPES is 550 16th St, San Francisco, CA 94158-2545.
- What is Lawrence Chang's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Chang is (415) 613-3901.
- Does Lawrence Chang accept Medicare?
- Lawrence Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lawrence Chang's NPI active?
- Yes — Lawrence Chang's NPI (1619471893) is active in the NPPES registry as of the last update on 2024-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.