GREGORY MICHAEL TOMC M.D.
NPI 1427343110
Radiology - Diagnostic Radiology in Lakewood, CO
About Gregory Michael Tomc M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY MICHAEL TOMC M.D. (NPI 1427343110) is an individual diagnostic radiology provider in Lakewood, Colorado, licensed in Colorado (DR.0056671) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with St James Healthcare, and is a graduate of University Of Toledo College Of Medicine (2011).
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 (PECOS)
Gregory Michael Tomc M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
11Medicare enrollment records show Gregory Tomc reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lakewood, CO 80401
- Reassigned Medicare billing, Colorado enrollment
- 70 clinicians in this Medicare group
Denver, CO 80230
- Reassigned Medicare billing, Colorado enrollment
- 395 clinicians in this Medicare group
Brighton, CO 80601
- Reassigned Medicare billing, Colorado enrollment
- 82 clinicians in this Medicare group
Dillon, CO 80435
- Reassigned Medicare billing, Colorado enrollment
- 194 clinicians in this Medicare group
Tucson, AZ 85711
- Reassigned Medicare billing, Colorado enrollment
- 58 clinicians in this Medicare group
Johns Creek, GA 30024
- Reassigned Medicare billing, Colorado enrollment
- 31 clinicians in this Medicare group
Gainesville, GA 30501
- Reassigned Medicare billing, Colorado enrollment
- 53 clinicians in this Medicare group
Conyers, GA 30012
- Reassigned Medicare billing, Colorado enrollment
- 29 clinicians in this Medicare group
Macon, GA 31201
- Reassigned Medicare billing, Colorado enrollment
- 8 clinicians in this Medicare group
Charlotte, NC 28202
- Reassigned Medicare billing, Colorado enrollment
- 52 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 17
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St James Healthcare
Acute Care Hospitals · Butte, MTHampton Regional Medical Center
Acute Care Hospitals · Varnville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
LAKEWOOD, CO 80401
LAKEWOOD, CO 80401
LAKEWOOD, CO 80401
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 Gregory Tomc's NPI number?
The NPI number for Gregory Tomc is 1427343110. It was assigned to this individual provider in the NPPES registry on June 10, 2011.
Where is Gregory Tomc located?
Gregory Tomc practices at 1746 Cole Blvd Ste 150, Lakewood, CO 80401. The listed phone number is (303) 914-8800.
What is Gregory Tomc's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Gregory Tomc enrolled in Medicare?
Yes. Gregory Tomc is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gregory Tomc's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Tomc reassigns Medicare benefits to 11 organizations: Diversified Radiology Of Colorado, Inc (Lakewood, CO), Orthopedic Centers Of Colorado, LLC (Denver, CO), Spectrum Medical Imaging, LLC (Brighton, CO), Vail Clinic Inc (Dillon, CO), Radiology Ltd., LLC (Tucson, AZ) and 6 more organizations, listed in the Medicare section above. 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 Gregory Tomc's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Tomc accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Blue Cross Blue Shield of Arizona and Blue Cross and Blue Shield of Montana and 5 other insurers list Gregory Tomc 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 Gregory Tomc affiliated with any hospitals?
According to CMS data, Gregory Tomc is affiliated with St James Healthcare and Hampton Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Gregory Tomc was last updated on March 12, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.