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Gastroenterology

Cassandra M. Steimle

Works at hospitals in Dayton, OH · Kettering, OH · Ohio

Summary

Cassandra M. Steimle is a gastroenterologist at 1 Wyoming St, Dayton, OH 45409. Phone: (937) 208-8000. Accepts Medicare assignment. In 2024, Cassandra M. Steimle had 383 Original Medicare patients and 624 services. NPI 1265852941. 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 Cassandra M. Steimle, 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 Cassandra M. Steimle accept Medicare assignment?
Yes. Medicare's clinician data says Cassandra M. Steimle 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 Cassandra M. Steimle see?
In 2024, CMS data shows 383 Original Medicare patients and 624 services for Cassandra M. Steimle. This counts Original Medicare only and measures volume, not quality.
What is Cassandra M. Steimle's NPI number?
1265852941. 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 Cassandra M. Steimle, 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 patients383
Services billed to Medicare624
Different services or procedures34
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)94 services
  2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)86 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)72 services
  4. Biopsy of large bowel using a flexible endoscope (45380)52 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)48 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%
  • Arthritis49%
  • Diabetes38%
  • Ischemic heart disease31%
  • Anxiety31%

Hospitals where Cassandra M. Steimle works

Medicare's Facility Affiliation Data lists Cassandra M. Steimle 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.

  • Kettering Health DaytonDayton, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 360133
  • Kettering Health Main CampusKettering, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360079
  • Miami Valley HospitalDayton, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360051

Practice locations

Addresses where Cassandra M. Steimle is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Premier Health Specialists Inc580 clinicians in the group
  • Digestive Specialists Inc25 clinicians in the group

Specialties

Find other Gastroenterology doctors in Ohio →

Other gastroenterologists in Dayton

Clinicians with the same Medicare primary specialty in Dayton, OH — not a recommendation.

All gastroenterologists in Dayton →

Other clinicians in Premier Health Specialists Inc

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

Clinician information

Medical schoolOhio University, College Of Osteopathic Medicine
Graduation year2014 (12 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1265852941
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