Mary P Mercer, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A105471 Issued in CA

Practice address

300 Pasteur Dr
Stanford, CA 94305-2200

Phone

(650) 723-4000

NPI assigned

Oct 12, 2007

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

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

Merit-based Incentive Payment System (MIPS)

Final score

97.28 of 100Reported as group

Quality

89.92

Promoting interoperability

100

Improvement activities

40

Cost

78.23

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• University of California SFGH Medical Group

  dba UCSF SFGH Medical Group Dept of Anesthesia

  • Anesthesiology Physician
  • San Francisco, CA
  • NPI 1366417420
  Medicare reassignment NPD
• University of California SFGH Medical Group

  dba UCSF SFGH Medical Group Division of Vascular Surgery

  • Vascular Surgery Physician
  • San Francisco, CA
  • NPI 1033913959
  NPD
• University of California SFGH Medical Group

  dba UCSF SFGH Medical Group Dept of Emergency

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1316912439
  NPD

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

{
    "created_epoch": "1192147200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781222400000",
    "number": "1104014265",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1001 Potrero Avenue",
            "address_2": "Bldg. 25, 1st Floor",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941103518",
            "country_code": "US",
            "telephone_number": "628-206-8111",
            "fax_number": "628-206-9038",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MERCER",
        "first_name": "MARY",
        "middle_name": "P",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-10-12",
        "last_updated": "2026-06-12",
        "certification_date": "2026-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PE0004X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Emergency Medical Services",
            "state": "CA",
            "license": "A105471",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A105471",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Athenna Menjivar
• Joshua Robert Menke, MD
• Jayant P Menon, MD
• Hannah Marie Mentjes, PA-C
• Antonio Meola, MD
• Robin F Mercer, PA-C
• Victoria Ann Merrell, P.A.
• Allison Alden Merz-Herrala, MD
• Matthew Peter Abe Mesias, M.D.
• Leah Meuter, PA

• Emergency Medicine Physician in Stanford, CA
• Providers in Stanford, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 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.