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

Dr. Michael J Slavin, DO

Individual provider Internal Medicine Physician · NPI 1194753806

Dr. Michael J Slavin, DO practises Nephrology in Waterloo, Iowa. Graduated from Philadelphia College of Osteopathic Medicine in 1973, 53 years ago. Practices with Mercy Physician Associates Inc, a 103-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa and Wisconsin.

Years since qualifying
53
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
IA, WI
In the registry since
2006
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2710 Saint Francis Dr Ste 510
Waterloo, IA 50702-5619
Phone: (319) 272-5000
Fax: (319) 272-5690
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 800 West Ave S, La Crosse, WI 54601-8806 — (608) 785-0940

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 3179 (IA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 3179 (IA)
Nephrology Physician Taxonomy 207RN0300X · Licence 13046-321 (WI)

Record details

NPI number1194753806
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 29, 2006
Last updated in NPPESAugust 28, 2025
Certification dateAugust 28, 2025

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1973 (53 years in practice)
Group practice Mercy Physician Associates Inc — 103 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients112
Services billed 257 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Mercy Physician Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 103 clinicians in the practice; 12 are shown here.

Other providers in Waterloo