Mary Yang, M.D.
NPI 1881717791 · Internal Medicine Physician · Santa Clara, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Yang, M.D. is a Internal Medicine Physician provider in Santa Clara, CA (NPI 1881717791).
Provider details
- NPI number
- 1881717791
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A99614 (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
- 2007-04-06
- Last updated
- 2021-12-22
Frequently asked questions
- What is Mary Yang's NPI number?
- Mary Yang's National Provider Identifier (NPI) is 1881717791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Yang's specialty?
- Mary Yang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Yang located?
- Mary Yang's practice location on file with NPPES is 710 Lawrence Expy, Santa Clara, CA 95051-5173.
- What is Mary Yang's phone number?
- The practice phone number listed in the NPPES registry for Mary Yang is (408) 554-9800.
- Does Mary Yang accept Medicare?
- Mary Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Yang's NPI active?
- Yes — Mary Yang's NPI (1881717791) is active in the NPPES registry as of the last update on 2021-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.