Joel Kleinberg, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

327780 Issued in NY

Practice address

75 N Country Rd
Port Jefferson, NY 11777-2190

Phone

(631) 473-1320

NPI assigned

Mar 27, 2021

Last updated

Oct 21, 2025By the provider in NPPES

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

Medicare fee-for-service enrollment

Enrolled in NY

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

Emergency Medicine

Education

Eastern Virginia Medical School, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

John T Mather Memorial HospitalGroup PAC ID 1254237753, shared by 6 NPIs, 176 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• John T Mather Memorial Hospital of Port Jefferson Hospital, Port Jefferson, NY, CCN 330185

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• Healthfirst Medicare Network H9678
• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H5989

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• John T. Mather Memorial Hospital

  • Psychiatry Physician
  • Port Jefferson Station, NY
  • NPI 1376642371
  Medicare reassignment NPD
• John T. Mather Memorial Hospital

  • Critical Care Medicine (Internal Medicine) Physician
  • Port Jefferson, NY
  • NPI 1467249334
  Medicare reassignment NPD
• North Shore-Lij Medical PC

  dba NHPP Cardiology at Great Neck

  • Urology Physician
  • Great Neck, NY
  • NPI 1053688572

  Emergency Medicine

  Medicare reassignment NPD
• John T. Mather Memorial Hospital

  • Emergency Medicine Physician
  • Port Jefferson, NY
  • NPI 1104913748
  NPD

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

• John T. Mather Memorial Hospital

  • General Acute Care Hospital
  • Port Jefferson, NY
  • NPI 1093718728
  Care Compare affiliation

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

{
    "created_epoch": "1616803200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761004800000",
    "number": "1710564406",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 N COUNTRY RD",
            "city": "PORT JEFFERSON",
            "state": "NY",
            "postal_code": "117772190",
            "telephone_number": "631-473-1320"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 N COUNTRY RD",
            "city": "PORT JEFFERSON",
            "state": "NY",
            "postal_code": "117772190",
            "telephone_number": "631-473-1320"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KLEINBERG",
        "first_name": "JOEL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-27",
        "last_updated": "2025-10-21",
        "certification_date": "2025-10-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NY",
            "license": "327780",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gary John Kingsley, PH.D.
• Linda Karen Kirk, LCSW
• Rebecca C Kirschner, CCC
• KK NP in Adult Health LLP
• Robert Klare, PT, CHT
• Roger A Kleinman, DDS
• Matthew Klics, PA-C
• Aundrea Eliza Knapp
• Lori-Ann Kneessy
• Gregg Michael Knel

• Emergency Medicine Physician in Port Jefferson, NY
• Providers in Port Jefferson, NY by specialty
• Emergency Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 21, 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.
• 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.