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

Terrell Messerly

Individual provider Emergency Medicine Physician · NPI 1750944773

Terrell Messerly is registered under Family Practice in Monroe, Wisconsin. Graduated from University of Minnesota Medical School in 2019, 7 years ago. Practices with Waterloo Emergency Physicians, LLC, a 22-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
7
Trained at
University of Minnesota Medical School
Licensed in
WI
In the registry since
2019
Specialties on file
2
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Practice location Address checks out

515 22nd Ave
Monroe, WI 53566-1569
Phone: (608) 324-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 750 Otto Ave Unit 2236, Saint Paul, MN 55102-5042 — (775) 304-7813

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 84435 (WI)
Family Medicine Physician Taxonomy 207Q00000X · Licence 84435 (WI)

Record details

NPI number1750944773
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedApril 16, 2019
Last updated in NPPESAugust 1, 2024
Certification dateAugust 1, 2024

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 2019 (7 years in practice)
Group practice Waterloo Emergency Physicians, Llc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients222
Services billed 255 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

  • Mercyone Waterloo Medical Center Hospital · Waterloo, IA

Colleagues at Waterloo Emergency Physicians, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 22 clinicians in the practice; 11 are shown here.

Other providers in Monroe