Quick answers
- Where does Christopher D. Grabowski Sr. see patients?
- Medicare's clinician data lists 2 practice locations, including Smithtown, NY and West Islip, NY. Call before your visit to confirm the address.
- What is Christopher D. Grabowski Sr.'s specialty?
- Medicare lists Physical Therapist in Private Practice as the primary specialty.
- Does Christopher D. Grabowski Sr. accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher D. Grabowski Sr. 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 Christopher D. Grabowski Sr.?
- (631) 724-1991, as listed in official Medicare / NPI Registry data.
- What is Christopher D. Grabowski Sr.'s NPI number?
- 1639115975. 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 Christopher D. Grabowski Sr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 Gilbert Ave, Suite 201Smithtown, NY 11787 (631) 724‑1991
- 786 Montauk Hwy, Uppr LevelWest Islip, NY 11795 (631) 661‑1400
Group practices
Medicare enrollment lists Christopher D. Grabowski Sr. as a member of these groups (CMS data updated 2026-10-02).
- Long Island Chiropractic and Physical Therapy PLLC3 clinicians in the group
- West Islip Chiropractic, Physical Therapy, Acupuncture, and Adult Heal3 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, New York →
Other physical therapists in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639115975 |
| 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