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Jonathan Chao, PA-C
NPI 1225711781 · Physician Assistant · Chino, CA
Jonathan Chao, PA-C is a Physician Assistant provider in Chino, CA (NPI 1225711781).
Provider details
- NPI number
- 1225711781
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- PA67552 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
Established profile(58/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
12611 9th St Ste B
Chino, CA 91710-3528
Phone: (909) 902-0009
Street-level locationGet directions
Mailing address
1156 S Muirfield Rd
Los Angeles, CA 90019-1826
Registry dates
- Enumerated
- 2023-08-10
- Last updated
- 2026-02-25
- Certified
- 2026-02-25
Frequently asked questions
- What is Jonathan Chao's NPI number?
- Jonathan Chao's National Provider Identifier (NPI) is 1225711781, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Chao's specialty?
- Jonathan Chao is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jonathan Chao located?
- Jonathan Chao's practice location on file with NPPES is 12611 9th St Ste B, Chino, CA 91710-3528.
- What is Jonathan Chao's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Chao is (909) 902-0009.
- Is Jonathan Chao's NPI active?
- Yes — Jonathan Chao's NPI (1225711781) is active in the NPPES registry as of the last update on 2026-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.