Alexander Reuben Markes, MD

Primary specialty

Sports Medicine (Orthopaedic Surgery) PhysicianTaxonomy code 207XX0005X

License

A182896 Issued in CA

Practice address

3838 California St RM 715
San Francisco, CA 94118-1509

Phone

(415) 668-8010

Fax

(415) 752-2560

NPI assigned

Mar 25, 2020

Last updated

Sep 28, 2026By the provider in NPPES

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

Orthopedic Surgery

Education

University of California, San Francisco School of Medicine, 2020

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: alexander.markes@upmcdirect.com

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

{
    "created_epoch": "1585094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790553600000",
    "number": "1164059523",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3838 CALIFORNIA ST RM 715",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941181509",
            "telephone_number": "415-668-8010",
            "fax_number": "415-752-2560"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3838 CALIFORNIA ST RM 715",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941181509",
            "telephone_number": "415-668-8010",
            "fax_number": "415-752-2560"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARKES",
        "first_name": "ALEXANDER",
        "middle_name": "REUBEN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-25",
        "last_updated": "2026-09-28",
        "certification_date": "2026-09-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207XX0005X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Sports Medicine",
            "state": "CA",
            "license": "A182896",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jennifer C Mark, PT
• Sarah Josephine Mark, M.A., MFT
• Marka Physiotherapy Inc (Marka Health)
• Renee Serene Markels, PT, DPT
• Laura Marker
• Market Street Center for Psychotherapy
• Juliet Diane Markis
• Robert Ellis Markison, MD
• Laurel Lahela Markland
• George K Markle, DDS

• Sports Medicine (Orthopaedic Surgery) Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Sports Medicine (Orthopaedic Surgery) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 28, 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.