Marshall Gene Katz, MD
Internal Medicine Physician · Brighton, MI
Marshall Gene Katz, MD is an internal medicine physician with a practice address in Brighton, Michigan, and NPI 1801932405, issued on Jan 30, 2007. Check the license (Michigan 4301033863, as entered in NPPES) on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marshall Gene Katz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301033863 MI
Self-reported in NPPES; status is on the state search - Practice location
- 9121 Riverside Drive, Brighton, MI 48116
- Phone
- (810) 231-6544
- Enumerated
- Jan 30, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Verify Marshall Gene Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301033863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marshall Gene Katz among 5,735 internal medicine physician records in Michigan
Marshall Gene Katz, 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 not. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 52% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 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).
24 internal medicine physician records list a practice address in Brighton
They are 24 of the 1,350 NPPES records with a practice address in Brighton, and 5,735 internal medicine physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,735 in Michigan → Every provider in Brighton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Borgeson, MDBrighton, MI 481161699092072
- Shannon Browne, MDBrighton, MI 481161629014881
- Amanda Cox, MDBrighton, MI 481161083703946
- Mark Ealovega, MDBrighton, MI 481161134218001
- Arjun GowdaBrighton, MI 481161487033437
- Annissa Hammoud, MDBrighton, MI 481161922197151
- Anita Helmle, MDBrighton, MI 481161447332218
- Ben Lee, D.OBrighton, MI 481161376884833
Common questions
What is Marshall Gene Katz, MD's NPI number?
Marshall Gene Katz, MD's National Provider Identifier (NPI) is 1801932405, issued on Jan 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Gene Katz, MD located?
The NPPES record lists a practice address at 9121 Riverside Drive, Brighton, MI, 48116. Phone: (810) 231-6544. Providers update this record themselves, so call before visiting.
How can I verify Marshall Gene Katz, MD's license?
NPPES lists Michigan license number 4301033863, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.