John Patrick McNamara, M.D.

Primary specialty

Vascular Surgery PhysicianTaxonomy code 2086S0129X

License

C38323 Issued in CA

Practice address

23451 Madison St
Suite #340
Torrance, CA 90505-4763

Phone

(310) 373-6864

Fax

(310) 791-8325

NPI assigned

May 28, 2006

Last updated

Jul 13, 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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Torrance Memorial Medical Center

  • Skilled Nursing Facility
  • Torrance, CA
  • NPI 1740268713
  NPD (past)

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

{
    "created_epoch": "1148774400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1972550473",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "23451 MADISON ST",
            "address_2": "SUITE #340",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905054763",
            "telephone_number": "310-373-6864",
            "fax_number": "310-791-8325"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "23451 MADISON ST",
            "address_2": "SUITE #340",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905054763",
            "telephone_number": "310-373-6864",
            "fax_number": "310-791-8325"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCNAMARA",
        "first_name": "JOHN",
        "middle_name": "PATRICK",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "CA",
            "license": "C38323",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kelly Ann McMahon
• Sara Christine McMillan, PT, DPT, PCS
• Catherine N McMullen, RN
• Samantha Jane McMullen
• Amy McNamara
• Paula McNamara
• Jeanmarie G McNeely, NURSE PRACTITIONER
• Sarah McOsker
• Siobhan McOsker, PT, DPT
• Angelica McPartlin, M.D.

• Vascular Surgery Physician in Torrance, CA
• Providers in Torrance, CA by specialty
• Vascular Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.