Individual provider Active NPI

Madison Riahin

  • Physical Therapist
  • Cambridge, MA
National Provider Identifier
1013755941
Registry record updated Oct 16, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical TherapistTaxonomy code 225100000X
License
PTL28226 Issued in MA
Practice address
356 Third St
Cambridge, MA 02142-1111
Phone
(401) 433-4172
Fax
(401) 433-0612
NPI assigned
Jul 16, 2024
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Oct 16, 2025

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 PTL28226 MA Primary

Addresses

Primary practice location

356 Third St
Cambridge, MA 02142-1111

Mailing address

4 Richmond SQ
Providence, RI 02906-5117
Phone (401) 433-4172

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250220001721 MA Practitioner - Physical Therapist in Private Practice 2668992637 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physical Therapist in Private Practice
Education
Tufts University School of Medicine, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Silver Fern Practice LLCGroup PAC ID 1658266515, 297 clinicians
Outback Physical Therapy IncGroup PAC ID 4688821101, 8 clinicians
Joint Ventures Physical Therapy IncGroup PAC ID 2163474560, 62 clinicians

Practice addresses (Care Compare)

115 Norwood Park S
Norwood, MA 02062-4633
Phone (781) 702-4630

475 Harvard St
Brookline, MA 02446-2439
Phone (617) 718-9300

648 Beacon St
Boston, MA 02215-2013
Phone 61753611611

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
PTL28226MAMDPhysical Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Silver Fern Practice, LLC Physical Therapist CurrentSince Jan 1, 2026 Accepting new patients
Joint Ventures Physical Therapy, Inc. Physical Therapist CurrentSince Feb 17, 2025 Accepting new patients
Silver Fern Practice, LLC Physical Therapist CurrentSince Jan 1, 2026 Accepting new patients
Joint Ventures Physical Therapy, Inc. CurrentSince Feb 17, 2025 Accepting new patients

Locations

1395 Commerce Way
Ste 112
Attleboro, MA 02703
Phone (508) 455-5740

648 Beacon St
Boston, MA 02215
Phone (617) 353-9345

115 Norwood Park S
Norwood, MA 02062
Phone (781) 349-5181

4 Richmond Sq
Providence, RI 02906
Phone (401) 885-2821

4 Richmond Sq
Ste 200
Providence, RI 02906

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1721088000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760572800000",
    "number": "1013755941",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4 RICHMOND SQ",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029065117",
            "telephone_number": "401-433-4172",
            "fax_number": "401-433-0612"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "356 THIRD ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021421111",
            "telephone_number": "401-433-4172",
            "fax_number": "401-433-0612"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIAHIN",
        "first_name": "MADISON",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2024-07-16",
        "last_updated": "2025-10-16",
        "certification_date": "2025-10-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "MA",
            "license": "PTL28226",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Cambridge, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 16, 2025; 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.