Graham Thomas McMahon, M.D., M.M.SC.

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

036.139549 Issued in IL

Practice address

4025 N Sheridan Rd
Chicago, IL 60613

Phone

(773) 388-1600

Fax

(773) 388-1602

NPI assigned

Jan 16, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in IL

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

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gmcmahon590185@direct.ochin.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.

• Howard Brown Health Center

  • Federally Qualified Health Center (FQHC)
  • Chicago, IL
  • NPI 1306048632
  Medicare reassignment NPD
• Howard Brown Health Center

  • Federally Qualified Health Center (FQHC)
  • Chicago, IL
  • NPI 1427523125
  NPD
• Howard Brown Health Center

  • Health Educator
  • Chicago, IL
  • NPI 1811824121
  NPD (past)
• Emerson Hospital

  • General Acute Care Hospital
  • Concord, MA
  • NPI 1922103357
  NPD (past)

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

{
    "created_epoch": "1137369600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1626998400000",
    "number": "1275512477",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4025 N SHERIDAN RD",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606132010",
            "telephone_number": "773-388-1600",
            "fax_number": "773-961-7308"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4025 N SHERIDAN RD",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "60613",
            "telephone_number": "773-388-1600",
            "fax_number": "773-388-1602"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMAHON",
        "first_name": "GRAHAM",
        "middle_name": "THOMAS",
        "name_prefix": "Dr.",
        "credential": "M.D., M.M.SC.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-01-16",
        "last_updated": "2021-07-23",
        "certification_date": "2021-07-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MA",
            "license": "205297",
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "IL",
            "license": "036.139549",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036.139549",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• McMahan-Clemis Institute of Otolaryngology SC
• Audrey McMahon
• Brandon J McMahon, M.D.
• Bridget Marie McMahon, FNP
• David McMahon, MD
• Janice M McMahon, OD
• Maxwell McMahon
• Meaghan McMahon, AGACNP-BC
• Rita McMahon, DT
• Tierney McMahon, PHD

• Endocrinology, Diabetes & Metabolism Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Endocrinology, Diabetes & Metabolism Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 23, 2021; 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.