LEGACY MEDICAL GROUP
NPI 1902023641
Internal Medicine in Rochester Hills, MI
About Legacy Medical Group NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEGACY MEDICAL GROUP (NPI 1902023641) is a healthcare organization registered as an internal medicine in Rochester Hills, Michigan and active in the NPI registry since April 2007. The organization lists Brian T Gietzen, Owner Medical Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Legacy Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by December 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
9Medicare enrollment records show 9 clinicians reassign Medicare billing to Legacy Medical Group, which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.
Clinicians, nearest first (9)
Rochester Hills, MI 48309
Rochester Hills, MI 48309
Rochester Hills, MI 48309
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Brian T. Gietzen, M. D., P. C.'s NPI number?
The NPI number for Brian T. Gietzen, M. D., P. C. is 1902023641. It was assigned to this organization in the NPPES registry on April 20, 2007. The provider is doing business as Legacy Medical Group.
Where is Brian T. Gietzen, M. D., P. C. located?
Brian T. Gietzen, M. D., P. C. is located at 1460 Walton Blvd Suite 200, Rochester Hills, MI 48309. The listed phone number is (248) 650-1800.
What is Brian T. Gietzen, M. D., P. C.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Brian T. Gietzen, M. D., P. C. enrolled in Medicare?
Yes. Brian T. Gietzen, M. D., P. C. is registered in the Medicare PECOS enrollment system.
When is Brian T. Gietzen, M. D., P. C.'s Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Michigan, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Brian T. Gietzen, M. D., P. C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 9 clinicians in 3 Medicare specialties reassign their Medicare billing to Brian T. Gietzen, M. D., P. C.. A 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 the clinician's services. The largest specialties are Internal Medicine (4), Nurse Practitioner (4) and Family Practice (1). Of these, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Brian T. Gietzen, M. D., P. C. accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Brian T. Gietzen, M. D., P. C. 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.
When was this NPI record last updated?
The NPPES record for Brian T. Gietzen, M. D., P. C. was last updated on October 15, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Legacy Medical Group · NPI 1902023641
Internal Medicine organization in Rochester Hills, Michigan. Organization record, active in the CMS NPPES registry since April 20, 2007.
## Identity
- **NPI:** 1902023641 (Entity type: Organization)
- **Enumerated:** April 20, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Legal business name:** Brian T. Gietzen, M. D., P. C.
- **Organization subpart:** No
- **Authorized official:** Brian Gietzen, OWNER MEDICAL DIRECTOR
## Practice location
- **Address:** 1460 WALTON BLVD, SUITE 200, Rochester Hills, MI 48309-1768
- **Phone:** (248) 650-1800 · **Fax:** (248) 650-1856
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** December 31, 2026 (Non-DME Part B, Michigan, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 9 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (4), Nurse Practitioner (4), Family Practice (1); 3 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 15, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1902023641) · Data from the CMS NPPES public registry.