Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Michael K Zenni, MD

Individual provider Urology Physician · NPI 1790774404

Michael K Zenni, MD practises Urology in Evansville, Indiana. Graduated from Vanderbilt University School of Medicine in 1995, 31 years ago. Practices with St Marys Medical Group LLC, a 228-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
31
Trained at
Vanderbilt University School of Medicine
Licensed in
IN
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

920 S Hebron Ave
Evansville, IN 47714-4086
Phone: (812) 473-1111
Fax: (812) 473-0911
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Urology Physician (primary) Taxonomy 208800000X · Licence 1054505A (IN)

Record details

NPI number1790774404
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 14, 2005
Last updated in NPPESMay 17, 2022
Certification dateMay 17, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyUROLOGY
Medical schoolVANDERBILT UNIVERSITY SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice St Marys Medical Group Llc — 228 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Prostate resection 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients598
Services billed 1,809 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at St Marys Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 228 clinicians in the practice; 12 are shown here.

Other providers in Evansville