Individual provider Active NPI

Ophelia Yin, MD

  • Maternal & Fetal Medicine Physician
  • San Francisco, CA
National Provider Identifier
1346630936
Registry record updated Aug 5, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X
License
A164243 Issued in CA
Practice address
1855 4TH St FL 3
San Francisco, CA 94143-2350
Phone
(415) 353-2566
Fax
(415) 353-2496
NPI assigned
Feb 3, 2015
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 5, 2022

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X A164243 CA
Student in an Organized Health Care Education/Training Program 390200000X
Maternal & Fetal Medicine Physician 207VM0101X A164243 CA Primary

Addresses

Primary practice location

1855 4TH St FL 3
San Francisco, CA 94143-2350

Mailing address

1855 4TH St FL 3
San Francisco, CA 94143-2350
Phone (415) 353-2566

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220810000218 CA Practitioner - Obstetrics/GynecologyPractitioner - Other (Physician) 9436583895 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Johns Hopkins University School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
UCSF Medical Group Business ServicesGroup PAC ID 3779497870, 1,533 clinicians

Practice addresses (Care Compare)

2330 Post St
San Francisco, CA 94115-3465
Phone (415) 476-4029

400 Parnassus Ave
San Francisco, CA 94143-2202

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone (415) 476-1000

521 Parnassus Ave
San Francisco, CA 94143-2204
Phone (415) 476-1000

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A164243CAMDMaternal & Fetal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Alameda Health System Current Accepting new patients
Alameda Health System CurrentSince Sep 30, 2025 Accepting new patients
University of California San Francisco CurrentSince Jul 26, 2022 Accepting new patients
UCSF Medical Group Business Services Obstetrics & Gynecology CurrentSince Jul 26, 2022 Accepting new patients
University of California San Francisco CurrentSince Jul 26, 2022 Accepting new patients
Alameda Health System CurrentSince Sep 30, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Jul 26, 2022 Accepting new patients
University of California San Francisco Current Accepting new patients
Alameda Health System Past Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients
University of California San Francisco Past Accepting new patients

Locations

3100 San Pablo Ave
Berkeley, CA 94702
Phone (510) 985-5020

1411 E 31st St
Oakland, CA 94602
Phone (510) 437-4323

400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000

2001 The Embarcadero
Ste 1500
San Francisco, CA 94143
Phone (415) 353-1606

1855 4th St
Fl 3
San Francisco, CA 94143
Phone (415) 353-2566

2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444

Interoperability endpoints

  • Direct secure messaging: oyin244311@direct-ucsfmedicalcenter.org

Organizations & group practices 11

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1422921600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1659657600000",
    "number": "1346630936",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1855 4TH ST FL 3",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350",
            "telephone_number": "415-353-2566",
            "fax_number": "415-353-2496"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1855 4TH ST FL 3",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350",
            "telephone_number": "415-353-2566",
            "fax_number": "415-353-2496"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YIN",
        "first_name": "OPHELIA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-02-03",
        "last_updated": "2022-08-05",
        "certification_date": "2022-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CA",
            "license": "A164243",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "CA",
            "license": "A164243",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.