Brian T. Gietzen, MD
Internal Medicine Physician · Rochester Hills, MI
Brian T. Gietzen, MD is an internal medicine physician with a practice address in Rochester Hills, Michigan, and NPI 1639154263, issued on Dec 6, 2005. Check the license (Michigan 4301070159, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Brian T. Gietzen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301070159 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1460 Walton Blvd, Rochester Hills, MI 48309
- Phone
- (248) 650-1800
- Enumerated
- Dec 6, 2005
- Record last updated
- Oct 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (248) 650-1856
- Medicare enrollment
- Enrolled (PECOS I20050923000092); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1460 Walton Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kenneth Bonk, DDSOral & Maxillofacial Surgery (D.M.D.)1295743805
- Susan Boyer, MA LPCProfessional Counselor1265532998
- Stephen Breuning, PH.D.Psychologist1255432464
Verify Brian T. Gietzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301070159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
546 Medicare Part D claims for 106 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium36 claims
- Levothyroxine Sodium23 claims
- Eliquis18 claims
- Pantoprazole Sodium17 claims
- Potassium Chloride17 claims
- Donepezil Hcl16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Brian T Gietzen MD PCRochester Hills, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian T. Gietzen among 5,735 internal medicine physician records in Michigan
Brian T. Gietzen, MD is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1997 · median 2006 among the 3,564 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 internal medicine physician records list a practice address in Rochester Hills
They are 63 of the 1,697 NPPES records with a practice address in Rochester Hills, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Rochester Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Walter Culver, M.D.Rochester Hills, MI 483091346240918
- Raad Kasmikha, MDRochester Hills, MI 483091558330332
- Sudha Purohit, M.D.Rochester Hills, MI 483091851379135
- Safwan Saker, M.D.Rochester Hills, MI 483091417941477
- Christopher Webster, D.O.Rochester Hills, MI 483091437442613
- Manuel Yapchai, M.D.Rochester Hills, MI 483091689862922
- Victor Al-Matchy, M.D.Sterling Heights, MI 483101609811975
- David Alnajjar, MDSterling Heights, MI 483101386625770
Common questions
What is Brian T. Gietzen, MD's NPI number?
Brian T. Gietzen, MD's National Provider Identifier (NPI) is 1639154263, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Brian T. Gietzen, MD located?
The NPPES record lists a practice address at 1460 Walton Blvd, Rochester Hills, MI, 48309. Phone: (248) 650-1800. Providers update this record themselves, so call before visiting.
How can I verify Brian T. Gietzen, MD's license?
NPPES lists Michigan license number 4301070159, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian T. Gietzen, MD prescribe under Medicare Part D?
In 2024, Brian T. Gietzen, MD had 546 Medicare Part D claims for 106 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Brian T. Gietzen, MD's MIPS final score?
The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.