Lerzan S. Kizilay, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

79533 Issued in MA

Practice address

Youville Hospital
1575 Cambridge St
Cambridge, MA 02138-4398

Phone

(617) 876-4344

Fax

(617) 234-7981

NPI assigned

Nov 25, 2005

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

Specialty

Internal Medicine

Education

Tufts University School of Medicine, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

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

Practice addresses (Care Compare)

Hospital & facility affiliations

• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
• Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
• Spaulding Hospital for Continuing Med Care-Camb Long-term care hospital, Cambridge, MA, CCN 222000

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kizilay.lerzan.srb@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

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Spaulding Rehabilitation Hospital Corporation

  • Land Ambulance
  • Cambridge, MA
  • NPI 1740250547
  NPD
• Spaulding Hospital-Cambridge, Inc.

  • Long Term Care Hospital
  • Cambridge, MA
  • NPI 1023240520
  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
• Spaulding Hospital-Cambridge Inc.

  • Rehabilitation Hospital Unit
  • Cambridge, MA
  • NPI 1538995659

  Long-term care hospital

  Care Compare affiliation
• Spaulding Hospital-Cambridge, Inc.

  • Long Term Care Hospital
  • Cambridge, MA
  • NPI 1023240520

  Long-term care hospital

  Care Compare affiliation
• 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": "1132876800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1285617027",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5 ANGIER CIR",
            "city": "AUBURNDALE",
            "state": "MA",
            "postal_code": "024662901",
            "telephone_number": "617-916-1069",
            "fax_number": "617-234-7981"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "YOUVILLE HOSPITAL",
            "address_2": "1575 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021384398",
            "telephone_number": "617-876-4344",
            "fax_number": "617-234-7981"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KIZILAY",
        "first_name": "LERZAN",
        "middle_name": "S.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-11-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "79533",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lewis A. Kirshner, MD
• Kate Kirson, PT, DPT
• Louis John Kishfy, MD
• Jane Vincent Kite, PH.D.
• Elizabeth Anne Kittredge
• Amy Kizirian, LICSW
• Crystal J Klaahsen, O.D.
• Joshua Kleckner, PA-C
• Arielle Klein, LMHC
• E. Joyce Klein

• 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.
• 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.