TERRELL MESSERLY
NPI 1750944773
Emergency Medicine in Monroe, WI
About Terrell Messerly NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TERRELL MESSERLY (NPI 1750944773) is an individual emergency medicine provider in Monroe, Wisconsin, licensed in Wisconsin (84435) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Mercyone Waterloo Medical Center, and maintains a secondary practice location in Saint Paul.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Terrell Messerly is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Terrell Messerly reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Monroe, WI 53566
- Reassigned Medicare billing, Wisconsin enrollment
- 376 clinicians in this Medicare group
Muscoda, WI 53573
- Reassigned Medicare billing, Wisconsin enrollment
- 299 clinicians in this Medicare group
Waterloo, IA 50702
- Reassigned Medicare billing, Iowa enrollment
- 48 clinicians in this Medicare group
Cedar Falls, IA 50613
- Reassigned Medicare billing, Iowa enrollment
- 37 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercyone Waterloo Medical Center
Acute Care Hospitals · Waterloo, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53566 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Terrell Messerly's NPI number?
The NPI number for Terrell Messerly is 1750944773. It was assigned to this individual provider in the NPPES registry on April 16, 2019.
Where is Terrell Messerly located?
Terrell Messerly practices at 515 22nd Ave, Monroe, WI 53566. The listed phone number is (608) 324-1000.
What is Terrell Messerly's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Terrell Messerly enrolled in Medicare?
Yes. Terrell Messerly is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Terrell Messerly's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Terrell Messerly reassigns Medicare benefits to 4 organizations: The Monroe Clinic, Inc. (Monroe, WI), Memorial Hospital Of Boscobel (Muscoda, WI), Waterloo Emergency Physicians, LLC (Waterloo, IA) and Cedar Falls Emergency Physicians, LLC (Cedar Falls, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Terrell Messerly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Terrell Messerly accept?
Health plans from Wellmark Health Plan of Iowa, Inc. list Terrell Messerly as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Terrell Messerly affiliated with any hospitals?
According to CMS data, Terrell Messerly is affiliated with Mercyone Waterloo Medical Center.
When was this NPI record last updated?
The NPPES record for Terrell Messerly was last updated on August 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Terrell Messerly · NPI 1750944773
Emergency Medicine physician in Monroe, Wisconsin. Individual provider, active in the CMS NPPES registry since April 16, 2019.
## Identity
- **NPI:** 1750944773 (Entity type: Individual)
- **Enumerated:** April 16, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 84435 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 515 22ND AVE, Monroe, WI 53566-1569
- **Phone:** (608) 324-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): The Monroe Clinic, Inc. (NPI 1386720548, Monroe, WI); Memorial Hospital Of Boscobel (NPI 1255620613, Muscoda, WI); Waterloo Emergency Physicians, LLC (NPI 1649013038, Waterloo, IA); Cedar Falls Emergency Physicians, LLC (NPI 1255146155, Cedar Falls, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2019
## Record status
- **NPPES last updated:** August 1, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1750944773) · Data from the CMS NPPES public registry.