Tahir Tellioglu, M.D.

Primary specialty

Addiction Psychiatry PhysicianTaxonomy code 2084P0802X

License

277173 Issued in MA

Practice address

100 Blossom St
MGH Cox Clinic
Boston, MA 02114-0211

Phone

(617) 643-5457

Fax

(617) 726-8950

NPI assigned

Jun 10, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 15

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in RI, MA2 enrollments

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 2

Specialty

Psychiatry

Education

Other, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, 3,494 clinicians

The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Massachusetts General Hospital Hospital, Boston, MA, CCN 220071

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tellioglu.tahir.mgh@direct.partners.masshiway.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.

• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573

  Psychiatry

  Medicare reassignment Care Compare group NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment Care Compare group NPD
• Rhode Island Hospital

  • Multi-Specialty Clinic/Center
  • Providence, RI
  • NPI 1154537520

  Psychiatry

  Medicare reassignment NPD
• General Hospital Corp

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1508390014
  NPD
• Natchaug Hospital, Inc.

  • Psychiatric Hospital
  • Mansfield Center, CT
  • NPI 1295811321
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Care Compare affiliation

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

{
    "created_epoch": "1149897600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785369600000",
    "number": "1871535534",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "175 JOSEPH CT",
            "city": "WARWICK",
            "state": "RI",
            "postal_code": "028869545",
            "telephone_number": "203-843-2928",
            "fax_number": "270-216-6261"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 BLOSSOM ST",
            "address_2": "MGH COX CLINIC",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021140211",
            "telephone_number": "617-643-5457",
            "fax_number": "617-726-8950"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "255 S Orange Ave Ste 104",
            "address_purpose": "LOCATION",
            "city": "Orlando",
            "state": "FL",
            "postal_code": "328013411",
            "country_code": "US",
            "telephone_number": "205-964-2924",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10 Dorrance St Ste 700",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029032014",
            "country_code": "US",
            "telephone_number": "205-964-2924",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15497 W Sand St",
            "address_purpose": "LOCATION",
            "city": "Victorville",
            "state": "CA",
            "postal_code": "923922910",
            "country_code": "US",
            "telephone_number": "442-327-9311",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "741 Piedmont Ave NE Ste 200",
            "address_purpose": "LOCATION",
            "city": "Atlanta",
            "state": "GA",
            "postal_code": "303081420",
            "country_code": "US",
            "telephone_number": "678-701-7073",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "20 Foundry St Fl 2",
            "address_purpose": "LOCATION",
            "city": "Concord",
            "state": "NH",
            "postal_code": "033015419",
            "country_code": "US",
            "telephone_number": "617-643-5457",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1245 Farmington Ave",
            "address_purpose": "LOCATION",
            "city": "West Hartford",
            "state": "CT",
            "postal_code": "061072667",
            "country_code": "US",
            "telephone_number": "205-964-2924",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TELLIOGLU",
        "first_name": "TAHIR",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-10",
        "last_updated": "2026-07-30",
        "certification_date": "2026-07-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NH",
            "license": "35084",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "VA",
            "license": "0101284621",
            "primary": false
        },
        {
            "code": "2084P0802X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Addiction Psychiatry",
            "state": "MA",
            "license": "277173",
            "primary": true
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "RI",
            "license": "MD12140",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CT",
            "license": "043151",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NY",
            "license": "338440",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "FL",
            "license": "ME179175",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "KY",
            "license": "61865",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "C207425",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "GA",
            "license": "109819",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "ME",
            "license": "MD29348",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NC",
            "license": "2024-03114",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "PA",
            "license": "MD493016",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "TX",
            "license": "W0750",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NJ",
            "license": "25MA12996600",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CAQH PROVIDER ID",
            "identifier": "11583072",
            "state": "RI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Telehealth Physician Network, PLLC
• Laura Telfer
• Jordan Joseph Telin, DDS
• Julia Telischi
• Joseph Tella
• Jorge Fernando Tello, M.D.
• Monique Aurora Tello, M.D.
• Marie A Tellus, R.N.
• Jennifer S Temel, MD
• Eleanor Hager Temelini, MSW LICSW

• Addiction Psychiatry Physician in Boston, MA
• Providers in Boston, MA by specialty
• Addiction Psychiatry Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 30, 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.