John Ang, MD
NPI 1326196114 · General Practice Physician · Diamond Bar, CA
John Ang, MD is a General Practice Physician provider in Diamond Bar, CA (NPI 1326196114).
Provider details
- NPI number
- 1326196114
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A42727 (CA)
Specialties & taxonomies
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
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
- 2007-01-08
- Last updated
- 2015-06-25
Frequently asked questions
- What is John Ang's NPI number?
- John Ang's National Provider Identifier (NPI) is 1326196114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ang's specialty?
- John Ang is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is John Ang located?
- John Ang's practice location on file with NPPES is 23525 Golden Springs Dr, Diamond Bar, CA 91765-2175.
- What is John Ang's phone number?
- The practice phone number listed in the NPPES registry for John Ang is (909) 861-6828.
- Is John Ang's NPI active?
- Yes — John Ang's NPI (1326196114) is active in the NPPES registry as of the last update on 2015-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.