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

Cardiovascular Disease (Cardiology)

John T. Fritzlen, MD

Works at hospitals in Atchison, KS · Lawrence, KS · Olathe, KS … · Kansas

Summary

Dr. John T. Fritzlen, MD is a cardiologist at 3943 Sherman Ave, Saint Joseph, MO 64506. Phone: (816) 279-6666. Accepts Medicare assignment. NPI 1730685553. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about John T. Fritzlen, 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 John T. Fritzlen accept Medicare assignment?
Yes. Medicare's clinician data says John T. Fritzlen 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.
What is John T. Fritzlen's NPI number?
1730685553. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John T. Fritzlen works

Medicare's Facility Affiliation Data lists John T. Fritzlen 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 John T. Fritzlen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists John T. Fritzlen as a member of these groups (CMS data updated October 2, 2026).

  • Kansas University Physicians Inc1,849 clinicians in the group
  • Mid-America Cardiology Associates Inc108 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Missouri →

Other cardiologists in Saint Joseph

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

All cardiologists in Saint Joseph →

Other clinicians in Kansas University Physicians Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Kansas School Of Med (kc/wich/sal)
Graduation year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1730685553
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians