Alexandra Elizabeth Flessel, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

A203951 Issued in CA

Practice address

136 N San Mateo Dr Ste 101
San Mateo, CA 94401-2779

Phone

(650) 344-1114

NPI assigned

Mar 27, 2021

Sex

Female

Sole proprietor

Yes

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

Specialty

Obstetrics/Gynecology

Education

Wayne State University School of Medicine, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

UCSF Health Medical FoundationGroup PAC ID 9436239878, 65 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Peninsula Medical Center Hospital, Burlingame, CA, CCN 050007

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: aflessel444707@direct-ucsfmedicalcenter.org
• Direct secure messaging: aflessel750496@hisp.ehr.sutterhealth.org

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 Health Medical Foundation

  • Multi-Specialty Clinic/Center
  • Oakland, CA
  • NPI 1922124866
  Medicare reassignment Care Compare group NPD
• UCSF Dept of Surgery

  • Surgery Physician
  • San Francisco, CA
  • NPI 1477627537
  Medicare reassignment NPD
• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104

  Obstetrics & Gynecology

  Medicare reassignment NPD
• University of California San Francisco

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment NPD
• UCSF Medical Group Business Services

  • Health Service Clinic/Center
  • San Francisco, CA
  • NPI 1194115246
  NPD
• University of California San Francisco

  • Community/Retail Pharmacy
  • San Francisco, CA
  • NPI 1659141711
  NPD

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

• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Burlingame, CA
  • NPI 1043670334
  Care Compare affiliation
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Menlo Park, CA
  • NPI 1295199701
  Care Compare affiliation

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

{
    "created_epoch": "1616803200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754438400000",
    "number": "1003493701",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "136 N SAN MATEO DR STE 101",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944012779",
            "telephone_number": "650-344-1114"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "136 N SAN MATEO DR STE 101",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944012779",
            "telephone_number": "650-344-1114"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "136 N San Mateo Dr Ste 101",
            "address_purpose": "LOCATION",
            "city": "San Mateo",
            "state": "CA",
            "postal_code": "944012779",
            "country_code": "US",
            "telephone_number": "650-344-1114",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5333 McAuley Dr Rm 2110",
            "address_purpose": "LOCATION",
            "city": "Ypsilanti",
            "state": "MI",
            "postal_code": "481971097",
            "country_code": "US",
            "telephone_number": "734-712-3967",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FLESSEL",
        "first_name": "ALEXANDRA",
        "middle_name": "ELIZABETH",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-03-27",
        "last_updated": "2025-08-06",
        "certification_date": "2025-08-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CA",
            "license": "A203951",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Richard Allan Fitzloff, DDS
• Amy Fitzpatrick
• Gabriel Saul Flanagan
• Devon Flannigan
• Megan Marie Fleischmann
• Elizabeth Fletcher
• Lizeth Flores-Diaz
• Araceli Flores-Mendoza
• Cruz Luciano Flores
• Juan Manuel Flores Jr.

• Obstetrics & Gynecology Physician in San Mateo, CA
• Providers in San Mateo, CA by specialty
• Obstetrics & Gynecology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 6, 2025; 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.