Individual provider Active NPI

Sean Mittelmann, OTR/L

  • Occupational Therapist
  • Smithtown, NY
National Provider Identifier
1821933847
Registry record updated Apr 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Occupational TherapistTaxonomy code 225X00000X
License
031079 Issued in NY
Practice address
1038 W Jericho Tpke
Smithtown, NY 11787-3208
Phone
(631) 368-2583
NPI assigned
Apr 23, 2026
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 23, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Occupational Therapist 225X00000X 031079 NY Primary

Addresses

Primary practice location

1038 W Jericho Tpke
Smithtown, NY 11787-3208

Mailing address

37 Lotus LN
Westbury, NY 11590-6320
Phone (516) 313-8480

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260527002829 NY Practitioner - Occupational Therapist in Private Practice 2365912789 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Occupational Therapist in Private Practice
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

Garden City, NY 11530
Phone (516) 745-8070

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1776902400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776902400000",
    "number": "1821933847",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "37 LOTUS LN",
            "city": "WESTBURY",
            "state": "NY",
            "postal_code": "115906320",
            "telephone_number": "516-313-8480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1038 W JERICHO TPKE",
            "city": "SMITHTOWN",
            "state": "NY",
            "postal_code": "117873208",
            "telephone_number": "631-368-2583"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MITTELMANN",
        "first_name": "SEAN",
        "credential": "OTR/L",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-04-23",
        "last_updated": "2026-04-23",
        "certification_date": "2026-04-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225X00000X",
            "taxonomy_group": "",
            "desc": "Occupational Therapist",
            "state": "NY",
            "license": "031079",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Smithtown, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.