THOMAS G WAMBACH M.D.
NPI 1558462945
Surgery in Grand Forks, ND
About Thomas G Wambach M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS G WAMBACH M.D. (NPI 1558462945) is an individual surgery provider in Grand Forks, North Dakota, licensed in North Dakota (22927) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Riverview Hospital, and is a graduate of University Of North Dakota School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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 G Wambach M.d. 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 Reassignment
Medicare enrollment records show Thomas Wambach reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Forks, ND 58201
- Reassigned Medicare billing, North Dakota enrollment
- 701 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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Riverview Hospital
Critical Access Hospitals · Crookston, MNSanford Thief River Falls Medical Center
Critical Access Hospitals · Thief River Falls, MNAltru Hospital
Acute Care Hospitals · Grand Forks, NDUnity Medical Center
Critical Access Hospitals · Grafton, NDCavalier County Memorial Hospital Association
Critical Access Hospitals · Langdon, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58201 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND FORKS, ND 58201
GRAND FORKS, ND 58201
GRAND FORKS, ND 58201
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 Wambach's NPI number?
The NPI number for Thomas Wambach is 1558462945. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is Thomas Wambach located?
Thomas Wambach practices at 1300 S. Columbia Rd, Grand Forks, ND 58201. The listed phone number is (701) 780-6000.
What is Thomas Wambach's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Thomas Wambach enrolled in Medicare?
Yes. Thomas Wambach 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 organization bills Medicare for Thomas Wambach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Wambach reassigns Medicare benefits to Altru Health System (Grand Forks, ND). The 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 Wambach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Wambach accept?
Health plans from Blue Cross Blue Shield of North Dakota list Thomas Wambach as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Thomas Wambach affiliated with any hospitals?
According to CMS data, Thomas Wambach is affiliated with Riverview Hospital, Sanford Thief River Falls Medical Center, Altru Hospital, Unity Medical Center and Cavalier County Memorial Hospital Association.
When was this NPI record last updated?
The NPPES record for Thomas Wambach was last updated on September 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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 G Wambach, M.D. · NPI 1558462945
Surgery physician in Grand Forks, North Dakota. Individual provider, active in the CMS NPPES registry since September 26, 2006.
## Identity
- **NPI:** 1558462945 (Entity type: Individual)
- **Enumerated:** September 26, 2006
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 22927 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1300 S. COLUMBIA RD, Grand Forks, ND 58201
- **Phone:** (701) 780-6000
## 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:** Altru Health System (NPI 1043309552, Grand Forks, ND), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of North Dakota School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** September 19, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1558462945) · Data from the CMS NPPES public registry.