Individual provider Active NPI

Mark Aurel Nagy, MD, PHD

  • Ophthalmology Physician
  • San Francisco, CA
National Provider Identifier
1811637945
Registry record updated Apr 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
A188894 Issued in CA
Practice address
490 Illinois Street, 5TH Floor
San Francisco, CA 94158
Phone
(415) 353-2020
NPI assigned
Mar 29, 2022
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 16, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X A188894 CA Primary
Student in an Organized Health Care Education/Training Program 390200000X A188894 CA

Addresses

Primary practice location

490 Illinois Street, 5TH Floor
San Francisco, CA 94158

Mailing address

490 Illinois St
Floor 5
San Francisco, CA 94158
Phone (415) 476-1239

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
I20260423000785 CA Practitioner - Ophthalmology 1456731686 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Ophthalmology
Education
Harvard Medical School, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of California SFGH Medical GroupGroup PAC ID 5496668410, shared by 14 NPIs, 566 clinicians

Practice addresses (Care Compare)

1001 Potrero Ave
San Francisco, CA 94110-3518
Phone (628) 206-8304

Hospital & facility affiliations

  • Zuckerberg San Francisco General Hosp & Trauma Ctr Hospital, San Francisco, CA, CCN 050228

National Provider Directory

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

Organizations & group practices 3

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.

Hospital & facility affiliations 2

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

NPI Registry JSON

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

{
    "created_epoch": "1648512000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776297600000",
    "number": "1811637945",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "490 ILLINOIS ST",
            "address_2": "FLOOR 5",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94158",
            "telephone_number": "415-476-1239"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "490 ILLINOIS STREET, 5TH FLOOR",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94158",
            "telephone_number": "415-353-2020"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NAGY",
        "first_name": "MARK",
        "middle_name": "AUREL",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-29",
        "last_updated": "2026-04-16",
        "certification_date": "2026-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A188894",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "CA",
            "license": "A188894",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.