Individual provider Active NPI

Mitchell Long, DO

  • Orthopaedic Surgery Physician
  • West Islip, NY
National Provider Identifier
1164876231
Registry record updated Oct 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
322584 Issued in NY
Practice address
1175 Montauk Hwy Ste 3
West Islip, NY 11795-4939
Phone
(631) 500-9400
Fax
(631) 500-9444
NPI assigned
Apr 14, 2016
Last updated
Oct 29, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 29, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Orthopaedic Surgery Physician 207X00000X 322584 NY Primary

Addresses

Primary practice location

1175 Montauk Hwy Ste 3
West Islip, NY 11795-4939

Mailing address

1175 Montauk Hwy Ste 3
West Islip, NY 11795-4939
Phone (631) 500-9400

Other practice location 1

200 Belle Terre Rd Ste 800
Port Jefferson, NY 11777-1928
Phone (631) 500-9400

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20230627001279 NY Practitioner - Orthopedic Surgery 7719225788 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Des Moines University of Osteopathic Medicine and Health Sciences, 2016
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

2201 Hempstead Tpke
East Meadow, NY 11554-1859

2339 Hempstead Tpke
East Meadow, NY 11554-2038

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Knee replacement1-10
Spinal fusion114
Laminectomy or laminotomy (partial removal of spine bones)23

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
322584NYMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Orthopaedics Spine and Sports Medicine, LLC Orthopaedic Surgery Current Accepting new patients
Orthopaedics Spine and Sports Medicine LLC CurrentSince Aug 7, 2023 Accepting new patients
Orthopaedics Spine and Sports Medicine LLC Orthopaedic Surgery CurrentSince Aug 7, 2023 Accepting new patients
Nassau Health Care Corporation CurrentSince Aug 14, 2023 Accepting new patients
Nassau Health Care Corporation CurrentSince Aug 14, 2023 Accepting new patients
Nassau Health Care Corporation Current Accepting new patients
Nassau Health Care Corporation Past Accepting new patients

Locations

1789 Sheepshead Bay Rd
Brooklyn, NY 11235
Phone (347) 587-1049

2201 Hempstead Tpke
East Meadow, NY 11554
Phone (516) 486-6862

2339 Hempstead Tpke
East Meadow, NY 11554
Phone (516) 520-3053

5500 Merrick Rd
Massapequa, NY 11758
Phone (516) 797-2657

5500 Merrick Rd
Ste 1
Massapequa, NY 11758

115 Eileen Way
Syosset, NY 11791
Phone (516) 622-9797

Networks

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

Interoperability endpoints

  • Direct secure messaging: mitchelllong@ossm.allscriptsdirect.net

Organizations & group practices 7

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.

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1460592000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793232000000",
    "number": "1164876231",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1175 MONTAUK HWY STE 3",
            "city": "WEST ISLIP",
            "state": "NY",
            "postal_code": "117954939",
            "telephone_number": "631-500-9400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1175 MONTAUK HWY STE 3",
            "city": "WEST ISLIP",
            "state": "NY",
            "postal_code": "117954939",
            "telephone_number": "631-500-9400",
            "fax_number": "631-500-9444"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 Belle Terre Rd Ste 800",
            "address_purpose": "LOCATION",
            "city": "Port Jefferson",
            "state": "NY",
            "postal_code": "117771928",
            "country_code": "US",
            "telephone_number": "631-500-9400",
            "fax_number": "631-500-9444",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LONG",
        "first_name": "MITCHELL",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-04-14",
        "last_updated": "2026-10-29",
        "certification_date": "2026-10-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NY",
            "license": "322584",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in West Islip, NY

Sources for this page

Verify at the official NPI Registry.