THOMAS M GRIST MD
NPI 1841269859
Radiology - Diagnostic Radiology in Madison, WI
About Thomas M Grist Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS M GRIST MD (NPI 1841269859) is an individual diagnostic radiology provider in Madison, Wisconsin, licensed in Wisconsin (28879) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Meriter, and is a graduate of Medical College Of Wisconsin (1985).
NPPES Registry Identity
Specialties & Licenses
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 M Grist Md 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 Grist reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Madison, WI 53705
- Reassigned Medicare billing, Wisconsin enrollment
- 206 clinicians in this Medicare group
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Unitypoint Health - Meriter
Acute Care Hospitals · Madison, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53792 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MADISON, WI 53792
MADISON, WI 53792
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 Grist's NPI number?
The NPI number for Thomas Grist is 1841269859. It was assigned to this individual provider in the NPPES registry on March 14, 2006.
Where is Thomas Grist located?
Thomas Grist practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-8340.
What is Thomas Grist's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Thomas Grist enrolled in Medicare?
Yes. Thomas Grist 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 Grist's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Grist reassigns Medicare benefits to 2 organizations: University Of Wisconsin System Non Payroll (Madison, WI) and University Of Wisconsin Medical Foundation, Inc (Middleton, WI). 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 Grist's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thomas Grist affiliated with any hospitals?
According to CMS data, Thomas Grist is affiliated with Unitypoint Health - Meriter and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Thomas Grist was last updated on January 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Thomas M Grist, MD · NPI 1841269859
Diagnostic Radiology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since March 14, 2006.
## Identity
- **NPI:** 1841269859 (Entity type: Individual)
- **Enumerated:** March 14, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 28879 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 263-8340 · **Fax:** (608) 265-6533
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Wisconsin System Non Payroll (NPI 1346266319, Madison, WI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1985
## Record status
- **NPPES last updated:** January 7, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1841269859) · Data from the CMS NPPES public registry.