Mark Jospeh Siedlecki, PT, DPT
Physical Therapist · Williamsville, NY
Mark Jospeh Siedlecki, PT, DPT is a physical therapist with a practice address in Williamsville, New York, and NPI 1124689542, issued on Jun 26, 2019. Check the license (New York 043405, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Jospeh Siedlecki
- Credential
- PT, DPT
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- 043405 NY
Self-reported in NPPES; status is on the state search - Practice location
- 111 N Maplemere RD Ste 100, Williamsville, NY 14221
- Phone
- (716) 204-3200
- Enumerated
- Jun 26, 2019
- Record last updated
- Jul 7, 2026
- Fax
- (716) 204-4337
- Medicare enrollment
- Enrolled (PECOS I20200319002244); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 21,756 in New York → Look up another NPI →
Also registered at 111 N Maplemere RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Erik Freeland, DOOrthopaedic Surgery Physician1912147745
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Verify Mark Jospeh Siedlecki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 043405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Body Mechanix Physical Therapy PLLCLockport, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Jospeh Siedlecki among 21,756 physical therapist records in New York
Mark Jospeh Siedlecki, PT, DPT is one of 21,756 physical therapist records with a practice address in New York. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 64% of them.
- NPI issued2019 · 64% of these records are older, 30% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 34% of these records are
- Graduated2018 · median 2016 among the 7,302 with a school on file
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
123 physical therapist records list a practice address in Williamsville
They are 123 of the 3,530 NPPES records with a practice address in Williamsville, and 21,756 physical therapist records in New York.
All 21,756 in New York → Every provider in Williamsville → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Laura Beitz-Walters, P.T.Williamsville, NY 142211427008390
- Brenda HamiltonWilliamsville, NY 142211306872239
- Laura Hodges, DPTWilliamsville, NY 142211669425690
- Michele Jakson, P.T.Williamsville, NY 142211346294774
- Kenneth Kurtz, P.T.Williamsville, NY 142211538169719
- Michael Massaro, PTWilliamsville, NY 142211053358002
- Colleen Miller, PTWilliamsville, NY 142211760439731
- Amy Nolan, PTMSWilliamsville, NY 142211326094780
Common questions
What is Mark Jospeh Siedlecki, PT, DPT's NPI number?
Mark Jospeh Siedlecki, PT, DPT's National Provider Identifier (NPI) is 1124689542, issued on Jun 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jospeh Siedlecki, PT, DPT located?
The NPPES record lists a practice address at 111 N Maplemere RD Ste 100, Williamsville, NY, 14221. Phone: (716) 204-3200. Providers update this record themselves, so call before visiting.
How can I verify Mark Jospeh Siedlecki, PT, DPT's license?
NPPES lists New York license number 043405, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.