TIMOTHY D. GROTH MD PC
Medicare Clinicians for NPI 1720022015
Clinic/Center - Multi-Specialty in Smithtown, NY
Clinicians Billing Medicare Through This Organization CMS
Clinicians who reassign their Medicare billing to this organization, per CMS enrollment records.
Timothy D. Groth MD PC in Smithtown, NY bills Medicare for 47 clinicians across 13 Medicare specialties. The largest specialties are Chiropractic with 12, Nurse Practitioner with 12 and Physical Medicine and Rehabilitation with 5. Of these, 2 practice at this address and 31 within 10 miles. Search by name or filter by specialty; each name links to that clinician's NPI profile.
Nurse Practitioner (13)
Chiropractic (12)
Physical Medicine and Rehabilitation (5)
Anesthesiology (3)
Pain Management (3)
Diagnostic Radiology (2)
Interventional Pain Management (2)
Physical Therapist in Private Practice (2 of 3)
Certified Registered Nurse Anesthetist (CRNA) (1)
Clinical Psychologist (1)
Clinical Social Worker (1)
Internal Medicine (1)
Neurology (1)
About this data
Medicare reassignment. A clinician who works for a hospital, clinic or medical group usually signs a Medicare reassignment (form CMS-855R). It lets the organization bill Medicare for the clinician's services and receive the payment. This page lists the clinicians whose reassignment to Timothy D. Groth MD PC appears in the CMS Revalidation Reassignment List.
Who is included. Clinicians who bill Medicare under their own NPI through this organization. A clinician can reassign to more than one organization, so the same name may also appear under other groups.
Addresses and phone numbers come from each clinician's own NPPES record, so they may point to another office or to the clinician's own practice.
Source: CMS Revalidation Reassignment List, October 2026 release; addresses, phone numbers and Medicare status from NPPES and PECOS. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
