Ann Chuang, MD
NPI 1174739064 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Chuang, MD is a Internal Medicine Physician provider in Stanford, CA (NPI 1174739064).
Provider details
- NPI number
- 1174739064
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A73706 (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
- 2007-05-15
- Last updated
- 2016-09-20
Frequently asked questions
- What is Ann Chuang's NPI number?
- Ann Chuang's National Provider Identifier (NPI) is 1174739064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Chuang's specialty?
- Ann Chuang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Chuang located?
- Ann Chuang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Ann Chuang's phone number?
- The practice phone number listed in the NPPES registry for Ann Chuang is (650) 723-4000.
- Does Ann Chuang accept Medicare?
- Ann Chuang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Chuang's NPI active?
- Yes — Ann Chuang's NPI (1174739064) is active in the NPPES registry as of the last update on 2016-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.