Kelly N. Casteel, MD

Medicare activity in 2024

Official CMS public-use data for Kelly N. Casteel, 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. Injection, fosaprepitant, 1 mg (J1453)11,850 services
2. Injection, oxaliplatin, 0.5 mg (J9263)10,100 services
3. Injection, pembrolizumab, 1 mg (J9271)6,900 services
4. Injection, paclitaxel, 1 mg (J9267)5,060 services
5. Injection, aprepitant, 1 mg (J0185)4,030 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 pressure62%
• High cholesterol61%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)45%
• Arthritis40%
• Ischemic heart disease32%
• Chronic kidney disease28%

Hospitals where Kelly N. Casteel works

Medicare's Facility Affiliation Data lists Kelly N. Casteel 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.

• Boulder Community HealthBoulder, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060027
• Good Samaritan Medical Center LLCLafayette, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060116
• Longs Peak HospitalLongmont, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060128
• UCHealth Broomfield HospitalBroomfield, CO · Acute Care Hospital · Emergency services: listed by Medicare · CCN 060129

Practice locations

Addresses where Kelly N. Casteel is enrolled with Medicare (CMS data updated October 2, 2026).

• 1760 E Ken Pratt Boulevard, Suite 301 (rmbs) and Suite 302 (rmcc)Longmont, CO 80504 (303) 684‑1900

Group practices

Medicare enrollment lists Kelly N. Casteel as a member of this group (CMS data updated October 2, 2026).

• Rocky Mountain Cancer Centers LLP132 clinicians in the group

Specialties

• Medical Oncologyprimary

Find other Medical Oncology doctors in Colorado →

Other oncologists in Colorado

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

• Christopher B. Jones, MD
• Gerald S. Falchook, MD
• Jessica Hellyer, MD
• Samuel A. Shelanski, MD
• James T. Link, MD
• Ankita Tandon, DO
• Enrique Soto Perez De Celis, MD
• Robert M. Jotte, MD

All oncologists in Colorado →

Other clinicians in Rocky Mountain Cancer Centers LLP

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

• Laura A. Traylor, NP
• Gabriele Urschel, NP
• Gwendolyn McGinnis, MD
• Michelle A. Levy, MD
• Praveena R. Solipuram, MD
• Leslie Busby, 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