Marissa Kiefer, D.P.T.

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

045266 Issued in NY

Practice address

35 Longwood Rd
Middle Island, NY 11953-2045

Phone

(631) 924-0008

Fax

(631) 924-4602

NPI assigned

Jan 14, 2020

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 NY

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Goodman Physical Therapy PC

  • Physical Therapist
  • West Islip, NY
  • NPI 1295163533
  Medicare reassignment NPD
• Professional Care Physical Therapy and Rehabilitation P.C

  • Physical Therapist
  • East Patchogue, NY
  • NPI 1659518157
  Medicare reassignment NPD
• Ivyrehab Physical Therapy, Occupational Therapy & Speech Language Path

  • Physical Therapist
  • Harrison, NY
  • NPI 1396799409
  NPD (past)

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

{
    "created_epoch": "1578960000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752019200000",
    "number": "1528608965",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "35 LONGWOOD RD",
            "city": "MIDDLE ISLAND",
            "state": "NY",
            "postal_code": "119532045",
            "telephone_number": "631-924-0008",
            "fax_number": "631-924-4602"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "35 LONGWOOD RD",
            "city": "MIDDLE ISLAND",
            "state": "NY",
            "postal_code": "119532045",
            "telephone_number": "631-924-0008",
            "fax_number": "631-924-4602"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "400 W Main St Ste 340",
            "address_purpose": "LOCATION",
            "city": "Babylon",
            "state": "NY",
            "postal_code": "117023009",
            "country_code": "US",
            "telephone_number": "631-661-3180",
            "fax_number": "631-661-3183",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "518 E Main St Ste 100",
            "address_purpose": "LOCATION",
            "city": "Riverhead",
            "state": "NY",
            "postal_code": "119012529",
            "country_code": "US",
            "telephone_number": "631-591-0838",
            "fax_number": "631-727-0678",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "191 Patchogue Yaphank Rd",
            "address_purpose": "LOCATION",
            "city": "East Patchogue",
            "state": "NY",
            "postal_code": "117724899",
            "country_code": "US",
            "telephone_number": "631-775-0971",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KIEFER",
        "first_name": "MARISSA",
        "credential": "D.P.T.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-01-14",
        "last_updated": "2025-07-09",
        "certification_date": "2025-07-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "NY",
            "license": "045266",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Tiffany A Kelly
• Jennifer Margaret Kerrigan, LMSW
• Alexis Kessler
• Carly Kiernan
• Minsung Kim
• Richard Kimmerling
• King Kullen Pharmacies Corp
• Brianna King

• Physical Therapist in Middle Island, NY
• Providers in Middle Island, NY by specialty
• Physical Therapist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.