Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nurse Practitioner

Karen M. Fischer, NP

Works at hospitals in Atchison, KS · Hiawatha, KS · Saint Joseph, MO … · Kansas, Missouri

Summary

Karen M. Fischer, NP is a nurse practitioner at 2016 S Main St, Maryville, MO 64468. Phone: (660) 562-2525. Accepts Medicare assignment. In 2024, Karen M. Fischer had 1,079 Original Medicare patients and 2,100 services. NPI 1295047504. 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. Fischer, 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. Fischer accept Medicare assignment?
Yes. Medicare's clinician data says Karen M. Fischer 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. Fischer see?
In 2024, CMS data shows 1,079 Original Medicare patients and 2,100 services for Karen M. Fischer. This counts Original Medicare only and measures volume, not quality.
What is Karen M. Fischer's NPI number?
1295047504. 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. Fischer, 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 patients1,079
Services billed to Medicare2,100
Different services or procedures7
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)882 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)801 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)287 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)116 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%
  • Ischemic heart disease66%
  • Atrial fibrillation47%
  • Arthritis45%
  • Diabetes37%

Hospitals where Karen M. Fischer works

Medicare's Facility Affiliation Data lists Karen M. Fischer 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. Fischer is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Karen M. Fischer as a member of these groups (CMS data updated October 2, 2026).

  • Heartland Regional Medical Center394 clinicians in the group
  • SSM Regional Health Services166 clinicians in the group
  • Mosaic Medical Center - Maryville77 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Missouri →

Other nurse practitioners in Maryville

Clinicians with the same Medicare primary specialty in Maryville, MO — not a recommendation.

All nurse practitioners in Maryville →

Other clinicians in Heartland Regional Medical Center

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

Clinician information

CredentialNP
Graduation year1993
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1295047504
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