Quick answers
- Where does Matthew Messner see patients?
- Medicare's clinician data lists 1 practice location in Speonk, NY. Call before your visit to confirm the address.
- What is Matthew Messner's specialty?
- Medicare lists Physical Therapist in Private Practice as the primary specialty.
- Does Matthew Messner accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew Messner accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Matthew Messner?
- (631) 596-5096, as listed in official Medicare / NPI Registry data.
- What is Matthew Messner's NPI number?
- 1255196804. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Matthew Messner is enrolled with Medicare (CMS data updated 2026-10-02).
- 170 Montauk HwySpeonk, NY 11972 (631) 596‑5096
Group practices
Medicare enrollment lists Matthew Messner as a member of this group (CMS data updated 2026-10-02).
- Seth Greiner PT PLLC8 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, New York →
Other physical therapists in Speonk
Clinicians with the same Medicare primary specialty in Speonk, NY — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255196804 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians