Katherine T Johnston, M.D., M.A., M.SC.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

226586 Issued in MA

Practice address

165 Cambridge St Ste 501
Boston, MA 02114-2759

Phone

(617) 726-4900

NPI assigned

Jun 1, 2006

Sex

Female

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 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

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Arts, Doctor of Medicine

Practice roles

Locations

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

  Internal Medicine

  Medicare reassignment NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment NPD

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

{
    "created_epoch": "1149120000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751846400000",
    "number": "1164469763",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST STE 501",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142759",
            "telephone_number": "617-726-4900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST STE 501",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142759",
            "telephone_number": "617-726-4900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JOHNSTON",
        "first_name": "KATHERINE",
        "middle_name": "T",
        "credential": "M.D., M.A., M.SC.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-01",
        "last_updated": "2025-07-07",
        "certification_date": "2025-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "226586",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Johnston Family Acupuncture LLC
• Alicia M Johnston, M.D.
• Benjamin Roche Johnston, M.D., PH.D.
• Ciaran Joseph Johnston, B.B, B.C.H.
• Emily Johnston
• Mark C Johnston, PH.D.
• Molly Johnston, RECOVERY COACH
• Natalie T Johnston, MSN, CPNP-PC
• Eryn T Johnstone, PNP
• Sarah Elizabeth Johnstone, M.D., PH.D.

• Internal Medicine Physician in Boston, MA
• Providers in Boston, 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 7, 2025; 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.