Individual provider Active NPI

Matthew Dempsey

  • Physical Therapist
  • Westport, CT
National Provider Identifier
1033479191
Registry record updated Mar 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical TherapistTaxonomy code 225100000X
License
009534 Issued in NU
Practice address
323 Riverside Ave
Westport, CT 06880-4825
Phone
(203) 845-2200
NPI assigned
May 23, 2012
Last updated
Mar 25, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physical Therapist 225100000X 009534 NU Primary

Addresses

Primary practice location

323 Riverside Ave
Westport, CT 06880-4825

Mailing address

18444 N 25TH Ave Ste 320
Phoenix, AZ 85023-1266
Phone (623) 241-8682

Other practice location 1

53 Old Kings Hwy N
suite 103
Darien, CT 06820-4735
Phone (203) 656-2229

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20120904000343 CT Practitioner - Physical Therapist in Private Practice 4183871726 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physical Therapist in Private Practice
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Orthoconnecticut PLLCGroup PAC ID 1850369018, 82 clinicians

Practice addresses (Care Compare)

323 Riverside Ave
Suite 1
Westport, CT 06880-4825
Phone (203) 845-2200

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Preneta Physical Therapy, PC CurrentSince Apr 19, 2017 Accepting new patients
Orthoconnecticut, PLLC CurrentSince Mar 1, 2026 Accepting new patients
Hand Therapy Associates, Inc Physical Therapist CurrentSince Dec 1, 2018 Accepting new patients
Orthoconnecticut, PLLC Physical Therapist CurrentSince Mar 1, 2026 Accepting new patients
Hand Therapy Associates, Inc Physical Therapist CurrentSince Dec 1, 2018 Accepting new patients

Locations

3101 Main St
Bridgeport, CT 06606
Phone (203) 372-2887

2 Riverview Dr
Danbury, CT 06810
Phone (203) 798-9702

913 Post Rd
Fairfield, CT 06824
Phone (203) 259-7177

761 Main Ave
Ste 113
Norwalk, CT 06851
Phone (203) 845-2987

51 N Main St
Ste 3G
Southington, CT 06489
Phone (203) 389-8177

323 Riverside Ave
Westport, CT 06880
Phone (203) 221-7337

323 Riverside Ave
Ste 1
Westport, CT 06880

245 Amity Rd
Ste 207
Woodbridge, CT 06525
Phone (203) 389-8177

Organizations & group practices 5

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.

NPI Registry JSON

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

{
    "created_epoch": "1337731200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1033479191",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18444 N 25TH AVE STE 320",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850231266",
            "telephone_number": "623-241-8682",
            "fax_number": "480-499-8459"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "323 RIVERSIDE AVE",
            "city": "WESTPORT",
            "state": "CT",
            "postal_code": "068804825",
            "telephone_number": "203-845-2200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "53 Old Kings Hwy N",
            "address_2": "suite 103",
            "address_purpose": "LOCATION",
            "city": "Darien",
            "state": "CT",
            "postal_code": "068204735",
            "country_code": "US",
            "telephone_number": "203-656-2229",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DEMPSEY",
        "first_name": "MATTHEW",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2012-05-23",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "NU",
            "license": "009534",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Westport, CT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 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.