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Pathology

Karen M. Fitzsimmons, MD

Works at hospitals in Silvis, IL · Davenport, IA · Clinton, IA · Illinois, Iowa

Summary

Dr. Karen M. Fitzsimmons, MD is a pathologist at 1227 E Rusholme St, Mercyone Genesis Davenport Patholog, Davenport, IA 52803. Phone: (563) 421-6610. Accepts Medicare assignment. In 2024, Karen M. Fitzsimmons had 535 Original Medicare patients and 1,285 services. NPI 1821099490. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Karen M. Fitzsimmons, 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 Karen M. Fitzsimmons accept Medicare assignment?
Yes. Medicare's clinician data says Karen M. Fitzsimmons 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 Karen M. Fitzsimmons see?
In 2024, CMS data shows 535 Original Medicare patients and 1,285 services for Karen M. Fitzsimmons. This counts Original Medicare only and measures volume, not quality.
What is Karen M. Fitzsimmons's NPI number?
1821099490. 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 Karen M. Fitzsimmons, 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 patients535
Services billed to Medicare1,285
Different services or procedures18
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Pathology examination of tissue using a microscope, intermediate complexity (88305)906 services
  2. Pathology examination of tissue using a microscope, moderately high complexity (88307)88 services
  3. Special stained specimen slides to examine tissue, each additional procedure (88341)73 services
  4. Special stained specimen slides to examine tissue, initial procedure (88342)55 services
  5. Pathology examination of tissue using a microscope, moderately low complexity (88304)52 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 pressure75%
  • High cholesterol75%
  • Arthritis48%
  • Ischemic heart disease31%
  • Diabetes30%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)29%

Hospitals where Karen M. Fitzsimmons works

Medicare's Facility Affiliation Data lists Karen M. Fitzsimmons 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 Karen M. Fitzsimmons is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Karen M. Fitzsimmons as a member of this group (CMS data updated October 2, 2026).

  • Genesis Health System224 clinicians in the group

Specialties

Find other Pathology doctors in Iowa →

Other pathologists in Davenport

Clinicians with the same Medicare primary specialty in Davenport, IA — not a recommendation.

All pathologists in Davenport →

Other clinicians in Genesis Health System

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

Clinician information

CredentialMD
Medical schoolUniversity Of Iowa, Rj & L Carver College Of Medicine
Graduation year1992 (34 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821099490
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