Ophelia Yin, MD
Maternal & Fetal Medicine Physician · San Francisco, CA
Ophelia Yin, MD is a maternal & fetal medicine physician with a practice address in San Francisco, California, and NPI 1346630936, issued on Feb 3, 2015. Check the license (California A164243, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ophelia Yin
- Credential
- MD
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- A164243 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1855 4TH St FL 3, San Francisco, CA 94143
- Phone
- (415) 353-2566
- Enumerated
- Feb 3, 2015
- Record last updated
- Aug 5, 2022
- Fax
- (415) 353-2496
- Medicare enrollment
- Enrolled (PECOS I20220810000218); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest maternal & fetal medicine physician records → All 343 in California → Look up another NPI →
Also registered at 1855 4TH St FL 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara Abu-Tabikh, M.D.Critical Care Medicine (Anesthesiology) Physician1265810055
- Karla Bermudez Wagner, M.D.Maternal & Fetal Medicine Physician1114169810
- Chiara Corbetta-Rastelli, MDObstetrics & Gynecology Physician1952862849
- Alissa Erogbogbo, MDObstetrics & Gynecology Physician1629234554
- Margaret Flesher, CNMAdvanced Practice Midwife1316464720
- Traci Iwamoto, M.D.Obstetrics & Gynecology Physician1841566767
Verify Ophelia Yin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A164243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Ucsf Medical Group Business ServicesSan Francisco, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ophelia Yin among 343 maternal & fetal medicine physician records in California
Ophelia Yin, MD is one of 343 maternal & fetal medicine physician records with a practice address in California. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 87% of them.
- NPI issued2015 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2003 among the 181 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Maternal & Fetal Medicine Physician providers in California
There are 343 maternal & fetal medicine physician records in California.
All 343 in California → Every provider in San Francisco → Maternal & Fetal Medicine Physician nationwide →
The 8 maternal & fetal medicine physician records with the nearest ZIP codes
- Karla Bermudez Wagner, M.D.San Francisco, CA 941431114169810
- Christine Blauvelt, MDSan Francisco, CA 941431063916013
- Stephanie Gaw, MD, PHDSan Francisco, CA 941431467789792
- Adrian Hernandez Lopez, MDSan Francisco, CA 941431194229898
- Daisy Leon-Martinez, M.D.San Francisco, CA 941431255719118
- Ben Li, MDSan Francisco, CA 941431003019001
- Nicola PerlmanSan Francisco, CA 941431104321025
- Annalisa Post, MDSan Francisco, CA 941431750670899
Common questions
What is Ophelia Yin, MD's NPI number?
Ophelia Yin, MD's National Provider Identifier (NPI) is 1346630936, issued on Feb 3, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ophelia Yin, MD located?
The NPPES record lists a practice address at 1855 4TH St FL 3, San Francisco, CA, 94143. Phone: (415) 353-2566. Providers update this record themselves, so call before visiting.
How can I verify Ophelia Yin, MD's license?
NPPES lists California license number A164243, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.