Charles Maass, PT, DPT

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

011011 Issued in CT

Practice address

323 Riverside Ave
Westport, CT 06880-4825

Phone

(203) 845-2200

NPI assigned

Aug 23, 2016

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CT, NY2 enrollments

Enrollment records 2

Specialty

Physical Therapist in Private Practice

Education

New York Medical College, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Orthoconnecticut PLLCGroup PAC ID 1850369018, 82 clinicians

Practice addresses (Care Compare)

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.

• Orthoconnecticut, PLLC

  • Physical Medicine & Rehabilitation Physician
  • Norwalk, CT
  • NPI 1356906515
  Medicare reassignment Care Compare group NPD
• Hand Therapy Associates, Inc

  • Occupational Therapist
  • Woodbridge, CT
  • NPI 1518087758

  Physical Therapist

  NPD
• Hand Therapy Associates, Inc

  • Occupational Therapist
  • Southington, CT
  • NPI 1922567544

  Physical Therapist

  NPD
• Orthoconnecticut, PLLC

  • Orthopaedic Surgery Physician
  • Danbury, CT
  • NPI 1770507345

  Physical Therapist

  NPD
• Orthoconnecticut, PLLC

  • Durable Medical Equipment & Medical Supplies
  • Danbury, CT
  • NPI 1174061519
  NPD (past)

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

{
    "created_epoch": "1471910400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774483200000",
    "number": "1639624398",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18444 N 25TH AVE STE 310",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850231266",
            "telephone_number": "623-241-8682"
        },
        {
            "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": "2142 Utopia Pkwy",
            "address_purpose": "LOCATION",
            "city": "Whitestone",
            "state": "NY",
            "postal_code": "113574142",
            "country_code": "US",
            "telephone_number": "718-767-0610",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAASS",
        "first_name": "CHARLES",
        "credential": "PT, DPT",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-08-23",
        "last_updated": "2026-03-26",
        "certification_date": "2026-03-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "NY",
            "license": "044376",
            "primary": false
        },
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "CT",
            "license": "011011",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Vivian Lua, PHARM D
• Jane Roberta Lubin, M.D.
• Leon Eugene Luck, M.D.
• James R. Lyons, M.D.
• M. Deborah Gruen, PH.D.
• Elizabeth M. Madden, LPC
• Elizabeth Madeo, LCSW
• Lisa Maggiore, OTR, L CHT
• Mikhail Magid, M.D.
• Marsha Magun, LPC

• Physical Therapist in Westport, CT
• Providers in Westport, CT by specialty
• Physical Therapist in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 26, 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.