THOMAS MICHAEL GRUHN
NPI 1447351093
Physical Medicine & Rehabilitation in East Northport, NY
About Thomas Michael Gruhn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS MICHAEL GRUHN (NPI 1447351093) is an individual physical medicine & rehabilitation provider in East Northport, New York, licensed in New York (012195) and active in the NPI registry since September 2006. He is a graduate of Other (1991).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Thomas Michael Gruhn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Thomas Gruhn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Garden City, NY 11530
- Reassigned Medicare billing, New York enrollment
- 711 clinicians in this Medicare group
Boynton Beach, FL 33426
- Reassigned Medicare billing, New York enrollment
- 2,450 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Thomas Gruhn's NPI number?
The NPI number for Thomas Gruhn is 1447351093. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is Thomas Gruhn located?
Thomas Gruhn practices at 279 Larkfield Rd, East Northport, NY 11731. The listed phone number is (631) 262-1370.
What is Thomas Gruhn's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Thomas Gruhn enrolled in Medicare?
Yes. Thomas Gruhn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Thomas Gruhn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Gruhn reassigns Medicare benefits to 2 organizations: Metro Physical Occupational Speech Massage Therapy & Acupuncture PLLC (Garden City, NY) and New York University (Boynton Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Gruhn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Thomas Gruhn was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.