Ophelia Yin, MD
NPI 1346630936 · Maternal & Fetal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ophelia Yin, MD is a Maternal & Fetal Medicine Physician provider in San Francisco, CA (NPI 1346630936).
Provider details
- NPI number
- 1346630936
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A164243 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
- 2015-02-03
- Last updated
- 2022-08-05
- Certified
- 2022-08-05
Frequently asked questions
- What is Ophelia Yin's NPI number?
- Ophelia Yin's National Provider Identifier (NPI) is 1346630936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ophelia Yin's specialty?
- Ophelia Yin is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ophelia Yin located?
- Ophelia Yin's practice location on file with NPPES is 1855 4th St Fl 3, San Francisco, CA 94143-2350.
- What is Ophelia Yin's phone number?
- The practice phone number listed in the NPPES registry for Ophelia Yin is (415) 353-2566.
- Does Ophelia Yin accept Medicare?
- Ophelia Yin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ophelia Yin's NPI active?
- Yes — Ophelia Yin's NPI (1346630936) is active in the NPPES registry as of the last update on 2022-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.