OPHELIA YIN MD
NPI 1346630936
Obstetrics & Gynecology - Maternal & Fetal Medicine in San Francisco, CA

Q: What is Ophelia Yin's NPI number?

The NPI number for Ophelia Yin is 1346630936. It was assigned to this individual provider in the NPPES registry on February 3, 2015.

Q: What is Ophelia Yin's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Q: When was this NPI record last updated?

The NPPES record for Ophelia Yin was last updated on August 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 03, 2015PECOS EnrolledAccepts Medicare Assignment

1855 4TH ST FL 3, SAN FRANCISCO, CA 94143(415) 353-2566(415) 353-2496 Get Directions Write a Review

NPPES record last updated: August 5, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 5, 2022, Mar 20, 2018 (2 updates tracked since 2018).

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About Ophelia Yin Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OPHELIA YIN MD (NPI 1346630936) is an individual maternal & fetal medicine provider in San Francisco, California, licensed in California (A164243) and active in the NPI registry since February 2015. She is enrolled in Medicare PECOS and is a graduate of Johns Hopkins University School Of Medicine (2018).

NPPES Registry Identity

NPI1346630936

Entity TypeIndividualFemale

Primary Taxonomy207VM0101X

Provider Legal NameOPHELIA YINCredential: MD

Location Address1855 4TH ST FL 3San Francisco, CA 94143-2350

Mailing Address1855 4th St Fl 3San Francisco, CA 94143-2350 · (415) 353-2566 · Fax (415) 353-2496

Phone(415) 353-2566

Fax(415) 353-2496

Sole ProprietorNo

Medical School CMSJohns Hopkins University School Of MedicineGraduated 2018

Enumeration DateFebruary 3, 2015

Last NPPES UpdateAugust 5, 20222 updates tracked since enumeration

NPPES CertifiedAugust 5, 2022

✔ NPI 1346630936 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207VM0101X

License✔ Licensed in CA · A164243

Definition

An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.

Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License A164243 (CA)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1855 4TH ST FL 3, San Francisco, CA 94143

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ophelia Yin Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436583895

PECOS Enrollment IDI20220810000218

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Ophelia Yin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco

3.7 mi

Surgery

400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1346329380 (415) 353-2161

Ucsf Medical Group Business Services

3.7 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

Alameda Health System

7.5 mi

Clinic/Center

501 S SHORE CTR W, SUITE A-F
Alameda, CA 94501

Reassigned Medicare billing, California enrollment
900 clinicians in this Medicare group

NPI 1124446158 (510) 814-4630

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NICOLA CLAIRE PERLMAN

Obstetrics & Gynecology (Maternal & Fetal Medicine)