Charles Hatem, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

30210 Issued in MA

Practice address

300 Mount Auburn St
Ste 410
Cambridge, MA 02138-5600

Phone

(617) 868-2650

Fax

(617) 868-2641

NPI assigned

Jul 1, 2005

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

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/86/brand/1/csg/1/fhir/r4

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.

• Mount Auburn Professional Services Inc

  • Internal Medicine Physician
  • Cambridge, MA
  • NPI 1992750996
  NPD (past)
• Mt Auburn Professional Services

  • Internal Medicine Physician
  • Cambridge, MA
  • NPI 1013375203
  NPD (past)

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

{
    "created_epoch": "1120176000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1528065877",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 ARSENAL MARKET PL",
            "city": "WATERTOWN",
            "state": "MA",
            "postal_code": "024725018",
            "telephone_number": "617-673-1851",
            "fax_number": "617-499-5579"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 MOUNT AUBURN ST",
            "address_2": "STE 410",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021385600",
            "telephone_number": "617-868-2650",
            "fax_number": "617-868-2641"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HATEM",
        "first_name": "CHARLES",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "30210",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0137979",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Maureen Ellen Hassett, RN
• Mohamed Hassoun
• Bruce M Hassuk, M.D.
• Stephanie M Hastings, DO
• Joshua Hatcher-Mullins, NP
• Hathaway Road Dental, PC
• Rachel Nettie Hathaway, M.D.
• Stefanie Haug, LICSW
• David Franklin Hauser, OD
• Rory Hauser

• Internal Medicine Physician in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Internal Medicine Physician in Massachusetts

• 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.