Gregory Leung, PA
NPI 1538236377 · Physician Assistant · Fontana, CA
Gregory Leung, PA is a Physician Assistant provider in Fontana, CA (NPI 1538236377).
Provider details
- NPI number
- 1538236377
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA10354 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-11-29
- Last updated
- 2008-09-23
Frequently asked questions
- What is Gregory Leung's NPI number?
- Gregory Leung's National Provider Identifier (NPI) is 1538236377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Leung's specialty?
- Gregory Leung is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregory Leung located?
- Gregory Leung's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Gregory Leung's phone number?
- The practice phone number listed in the NPPES registry for Gregory Leung is (909) 427-3910.
- Is Gregory Leung's NPI active?
- Yes — Gregory Leung's NPI (1538236377) is active in the NPPES registry as of the last update on 2008-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.