Justin P Ma, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

A194699 Issued in CA

Practice address

490 Illinois Street,
San Francisco, CA 94158

Phone

(415) 353-2020

NPI assigned

Mar 21, 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

Duke University School of Medicine, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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.

• Regents of the University of California

  dba UCSF Dept of Medicine General Medicine

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1760552343
  Medicare reassignment
• UCSF Medical Group Business Services

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

  dba UCSF Pediatrics Group

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

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

{
    "created_epoch": "1647820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782691200000",
    "number": "1861141426",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1001 POTRERO AVENUE",
            "address_2": "BLDG. 5, 4TH FLOOR, SUITE 4M",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941103510",
            "telephone_number": "628-206-4420"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "490 ILLINOIS STREET,",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94158",
            "telephone_number": "415-353-2020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1001 Potrero Avenue",
            "address_2": "Bldg. 5, 4th Floor, Suite 4M",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941103518",
            "country_code": "US",
            "telephone_number": "628-206-8025",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "31700 Temecula Pkwy Ste 2",
            "address_purpose": "LOCATION",
            "city": "Temecula",
            "state": "CA",
            "postal_code": "925925896",
            "country_code": "US",
            "telephone_number": "951-600-4337",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MA",
        "first_name": "JUSTIN",
        "middle_name": "P",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-21",
        "last_updated": "2026-06-29",
        "certification_date": "2026-06-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A194699",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Hanley Ma, M.D.
• Harrison Howard Ma, PT, DPT, CSCS
• Jane Teresa Ma, LCSW
• Jessie Xili Ma, MD
• Judy Ma, PHARMD
• Kaying Ma
• Lorraine Ma
• Mary T Ma, LCSW
• Melanie Ma
• Mia Michelle Ma

• 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.