John Nesemann, MD, MSC

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

A189201 Issued in CA

Practice address

513 Parnassus Ave # S321
San Francisco, CA 94143-2205

Phone

(415) 476-1239

NPI assigned

Mar 22, 2022

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Specialty

Ophthalmology

Education

University of California, Geffen School of Medicine, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• UCSF Medical Center Hospital, San Francisco, CA, CCN 050454

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104
  Medicare reassignment
• University of California San Francisco

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• University of California, San Francisco

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1689772592
  Care Compare affiliation

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

{
    "created_epoch": "1647907200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782691200000",
    "number": "1124777586",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "513 PARNASSUS AVE # S321",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432205"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "513 PARNASSUS AVE # S321",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432205",
            "telephone_number": "415-476-1239"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "490 Illinois Street",
            "address_2": "Floor 2, Box 0944",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "94158",
            "country_code": "US",
            "telephone_number": "415-353-2020",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1001 Potrero Avenue",
            "address_2": "Bldg. 5, 4M",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941103510",
            "country_code": "US",
            "telephone_number": "628-206-8025",
            "fax_number": "628-206-2681",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NESEMANN",
        "first_name": "JOHN",
        "credential": "MD, MSC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-22",
        "last_updated": "2026-06-29",
        "certification_date": "2026-06-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A189201",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gabriel Nervo
• Jason Nery, RAS
• Royeen Nesari, DDS
• Kathryn Cooley Nesbit, PT
• Alfredta Nesbitt
• Lillian Nesis
• Rebecca Rapaport Ness, L.AC.
• Rebecca K. Nessel, MD
• Naomi F Nessim, AMFT
• Nest Acupuncture

• Ophthalmology Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Ophthalmology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.