Brian Joseph McMahon, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

224721 Issued in NY

Practice address

101 Hospital Rd
Patchogue, NY 11772

Phone

(631) 687-2953

Fax

(610) 617-6280

NPI assigned

Jun 13, 2006

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 NY

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: brian.mcmahon@direct.stonybrookmedicine.edu

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.

• Stony Brook Emergency Physicians, University Faculty Practice Corporat

  • Emergency Medicine Physician
  • Stony Brook, NY
  • NPI 1265487672
  Medicare reassignment NPD
• Franklin Medical Group, PC

  • Internal Medicine Physician
  • Waterbury, CT
  • NPI 1780686964

  Emergency Medicine

  NPD (past)

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

{
    "created_epoch": "1150156800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1801839550",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 13700-1378",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191911378",
            "telephone_number": "800-666-2455",
            "fax_number": "610-617-6280"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 HOSPITAL RD",
            "city": "PATCHOGUE",
            "state": "NY",
            "postal_code": "11772",
            "telephone_number": "631-687-2953",
            "fax_number": "610-617-6280"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMAHON",
        "first_name": "BRIAN",
        "middle_name": "JOSEPH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-13",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NY",
            "license": "224721",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Meredith McIntyre
• Kaddegra McKoy
• Catherine B McLaughlin, RN
• Melinda N. McLaughlin, SLP
• Linda Elizabeth McLehose, LCSW
• Medical Marijuana Consulting PC
• Medihealth Medical PC
• Vaishali Mehta, MD
• Jeanne Arlene Meister, CCC-SLP
• Christina A Melli, DPT

• Emergency Medicine Physician in Patchogue, NY
• Providers in Patchogue, NY by specialty
• Emergency Medicine Physician in New York

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.