Andrew Michael Brennan Jr., MD

Primary specialty

Pediatric Cardiology PhysicianTaxonomy code 2080P0202X

License

A180245 Issued in CA

Practice address

725 Welch Rd
Palo Alto, CA 94304-1601

Phone

(650) 497-8000

NPI assigned

Mar 21, 2019

Sex

Male

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

Specialty

Pediatric Medicine

Education

Other, 2019

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: abrennan125453@santaclaravalley.direct-ci.net

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.

• County of Santa Clara

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • San Jose, CA
  • NPI 1699885079
  Medicare reassignment
• LPCH Medical Group Div of Lucile

  • Children's Hospital
  • Palo Alto, CA
  • NPI 1417907940
  Medicare reassignment
• Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1437292927
  Medicare reassignment
• County of Santa Clara

  • Federally Qualified Health Center (FQHC)
  • San Jose, CA
  • NPI 1376538991
  NPD
• County of Santa Clara

  • Pharmacy
  • San Jose, CA
  • NPI 1891871919
  NPD

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

{
    "created_epoch": "1553126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784678400000",
    "number": "1770043168",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BRENNAN",
        "first_name": "ANDREW",
        "middle_name": "MICHAEL",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-21",
        "last_updated": "2026-07-22",
        "certification_date": "2026-07-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A180245",
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "CA",
            "license": "A180245",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Julia S Breckenridge, PH.D.
• Melissa Bregante, RN, PMHNP
• Cavan Lansing Breland, MD
• Ryan Anthony Brenes
• Terese Brennan-Marquez, LCSW
• Ann M. Brennan, NP
• Calvin Brenneman, MD
• John T. Brentar, PHD
• Adriana Nicole Brewer, NP
• Deborah Anne Brewer, LCSW

• Pediatric Cardiology Physician in Palo Alto, CA
• Providers in Palo Alto, CA by specialty
• Pediatric Cardiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 22, 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.