Belen Leong, MD
NPI 1558413914 · Developmental - Behavioral Pediatrics Physician · Fontana, CA
Belen Leong, MD is a Developmental - Behavioral Pediatrics Physician provider in Fontana, CA (NPI 1558413914).
Provider details
- NPI number
- 1558413914
- Entity type
- Individual
- Primary specialty
- Developmental - Behavioral Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A42595 (CA)
Specialties & taxonomies
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
- 2007-01-17
- Last updated
- 2008-09-23
Frequently asked questions
- What is Belen Leong's NPI number?
- Belen Leong's National Provider Identifier (NPI) is 1558413914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Belen Leong's specialty?
- Belen Leong is listed in the NPPES registry with a primary specialty of Developmental - Behavioral Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Belen Leong located?
- Belen Leong's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Belen Leong's phone number?
- The practice phone number listed in the NPPES registry for Belen Leong is (909) 427-3910.
- Is Belen Leong's NPI active?
- Yes — Belen Leong's NPI (1558413914) 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.