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Family Practice

Courtney L. Messerly, MD

Works at hospitals in Minneapolis, MN · Minnesota

Summary

Dr. Courtney L. Messerly, MD is a family doctor at 440 Elm St E, Annandale, MN 55302. Phone: (320) 682-5225. Accepts Medicare assignment. In 2024, Courtney L. Messerly had 116 Original Medicare patients and 283 services. NPI 1992148738. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 440 Elm St E, Annandale, MN 55302 · Directions
  • Phone: (320) 682‑5225
  • Medicare: Accepts Medicare assignment
  • Hospital: Abbott Northwestern Hospital
  • Group practice: Allina Health System
  • Medical school: Medical College Of Wisconsin · graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Courtney L. Messerly, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Courtney L. Messerly accept Medicare assignment?
Yes. Medicare's clinician data says Courtney L. Messerly accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Courtney L. Messerly see?
In 2024, CMS data shows 116 Original Medicare patients and 283 services for Courtney L. Messerly. This counts Original Medicare only and measures volume, not quality.
What is Courtney L. Messerly's NPI number?
1992148738. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Courtney L. Messerly, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients116
Services billed to Medicare283
Different services or procedures46
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)69 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)37 services
  3. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)16 services
  4. Bacterial colony count, urine (87086)15 services
  5. Insertion of needle into vein for collection of blood sample (36415)13 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure59%
  • High cholesterol57%
  • Arthritis41%
  • Depression34%
  • Anxiety33%
  • Ischemic heart disease22%

Hospitals where Courtney L. Messerly works

Medicare's Facility Affiliation Data lists Courtney L. Messerly at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Courtney L. Messerly is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Courtney L. Messerly as a member of this group (CMS data updated October 2, 2026).

  • Allina Health System3,842 clinicians in the group

Specialties

Find other Family Practice doctors in Minnesota →

Other family doctors in Annandale

Clinicians with the same Medicare primary specialty in Annandale, MN — not a recommendation.

All family doctors in Annandale →

Other clinicians in Allina Health System

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolMedical College Of Wisconsin
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1992148738
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians