John Koreth, MBBS DPHIL

Primary specialty

Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X

License

208706 Issued in MA

Practice address

450 Brookline Ave
Boston, MA 02215-5450

Phone

(617) 632-2949

Fax

(617) 632-5168

NPI assigned

Mar 29, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 8

Medicare fee-for-service enrollment

Enrolled in MA

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

Specialty

Hematology/Oncology

Education

Other, 1993

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Dana-Farber Cancer Institute, Inc.Group PAC ID 9133038904, shared by 5 NPIs, 671 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Dana-Farber Cancer Institute Hospital, Boston, MA, CCN 220162
• Brigham and Women's Hospital Hospital, Boston, MA, CCN 220110

Merit-based Incentive Payment System (MIPS)

Final score

84.06 of 100Reported as group

Quality

65.04

Promoting interoperability

100

Improvement activities

40

Cost

69.14

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: koreth.john.dfci@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.

• Dana-Farber Cancer Institute, Inc.

  dba Binney Medical Associates

  • Special Hospital
  • Boston, MA
  • NPI 1346433257

  Medical Oncology

  Medicare reassignment NPD
• Dana-Farber Cancer Institute, Inc.

  dba Dana-Farber Cancer Institute

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1851333686
  Medicare reassignment NPD
• Dana-Farber Cancer Institute, Inc.

  dba The Friends' Place

  • Durable Medical Equipment & Medical Supplies
  • Chestnut Hill, MA
  • NPI 1497429237
  NPD
• Dana-Farber Cancer Institute, Inc.

  dba Boutique

  • Durable Medical Equipment & Medical Supplies
  • Boston, MA
  • NPI 1225079940
  NPD (past)

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

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  Care Compare affiliation
• Dana-Farber Cancer Institute, Inc.

  dba Dana-Farber Cancer Institute

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1851333686
  Care Compare affiliation

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

{
    "created_epoch": "1143590400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779062400000",
    "number": "1396706503",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44 BINNEY ST",
            "address_2": "D1B 22",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156013",
            "telephone_number": "617-632-2949",
            "fax_number": "617-632-5168"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 BROOKLINE AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155450",
            "telephone_number": "617-632-2949",
            "fax_number": "617-632-5168"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KORETH",
        "first_name": "JOHN",
        "credential": "MBBS DPHIL",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-29",
        "last_updated": "2026-05-18",
        "certification_date": "2026-05-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MA",
            "license": "208706",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "MA",
            "license": "208706",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TUFTS",
            "identifier": "208706",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "3616024",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITED HEALTH CARE",
            "identifier": "3600442",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA US HEALTCARE",
            "identifier": "3634386",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "J27417",
            "state": "MA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2042941",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PRIVATE HEALTH CARE SYS",
            "identifier": "9348554",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HPHC DFCI ONLY",
            "identifier": "AA13671",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Akosua Korboe, MD
• Kimia Kordestani, PA-C
• Elodia Kore, DDS
• Dorit Koren, MD
• Paula Koren, LICSW
• Ruslan Korets, M.D.
• Joseph Korin
• Luca Anna Koritsanszky, CNM
• Serge Korjian, M.D.
• Ann Korkidakis, MD MPH

• Hematology (Internal Medicine) Physician in Boston, MA
• Providers in Boston, MA by specialty
• Hematology (Internal Medicine) Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 18, 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.