Cassandra M. Bresnahan, MD

Medicare activity in 2024

Official CMS public-use data for Cassandra M. Bresnahan, 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.

Most frequent services

1. Hospital discharge day management, more than 30 minutes (99239)32 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)29 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)25 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)21 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 cholesterol68%
• Arthritis60%
• Depression44%
• Heart failure44%
• Chronic kidney disease40%

Hospitals where Cassandra M. Bresnahan works

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

• St Thomas More HospitalCanon City, CO · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 061344

Practice locations

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

• 615 Fairhurst StSterling, CO 80751 (970) 522‑0122

Group practices

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

• Red Mountain Internal Medicine2 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Colorado →

Other internal medicine doctors in Colorado

Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.

• Daniel Lambrecht, MD
• Nantida Hong, MD
• Ashley Woodworth, DO
• Amir M. Kalani, MD
• Aaron Emmons, MD
• Lawrence Haber, MD
• Jennifer R. Stichman, MD
• Lance A. Schell, MD

All internal medicine doctors in Colorado →

Other clinicians in Red Mountain Internal Medicine

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

• Timothy Bresnahan, MD

Clinician information

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