Mark Jospeh Siedlecki, PT, DPT

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

043405 Issued in NY

Practice address

111 N Maplemere Rd Ste 100
Williamsville, NY 14221-3182

Phone

(716) 204-3200

Fax

(716) 204-4337

NPI assigned

Jun 26, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

Enrollment records 1

Specialty

Physical Therapist in Private Practice

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Body Mechanix Physical Therapy PLLCGroup PAC ID 8022064393, 6 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.

• Body Mechanix Physical Therapy PLLC

  • Physical Therapy Clinic/Center
  • Lockport, NY
  • NPI 1063517662

  Physical Therapist

  Medicare reassignment Care Compare group NPD
• Western New York Physical and Occupational Therapy Group PLLC

  • Physical Therapist
  • Depew, NY
  • NPI 1881647261
  NPD (past)

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

{
    "created_epoch": "1561507200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1124689542",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4225 GENESEE ST STE 400",
            "city": "CHEEKTOWAGA",
            "state": "NY",
            "postal_code": "142251994",
            "telephone_number": "716-204-3200",
            "fax_number": "716-204-4337"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "111 N MAPLEMERE RD STE 100",
            "city": "WILLIAMSVILLE",
            "state": "NY",
            "postal_code": "142213182",
            "telephone_number": "716-204-3200",
            "fax_number": "716-204-4337"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEDLECKI",
        "first_name": "MARK",
        "middle_name": "JOSPEH",
        "name_prefix": "Dr.",
        "credential": "PT, DPT",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-06-26",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "NY",
            "license": "043405",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Adnan H Siddiqui, MD, PHD
• Anood Bint Masood Siddiqui, MD
• Jafar Siddiqui, M.D.
• Andrew Joseph Siedlecki, MD
• Andrew N Siedlecki, M.D.
• Signature OB/GYN LLP
• Michael S Silber, MD
• Laurie M Silbiger
• Michael Sillett
• Ruben Silva, DPT

• Physical Therapist in Williamsville, NY
• Providers in Williamsville, NY by specialty
• Physical Therapist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 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.