Jillian J. Nickelsen, MD

Medicare activity in 2024

Official CMS public-use data for Jillian J. Nickelsen, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)194 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)126 services
3. Hospital discharge day management, more than 30 minutes (99239)109 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)55 services
5. Critical care, first 30-74 minutes (99291)39 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 cholesterol74%
• Arthritis62%
• Chronic kidney disease45%
• Ischemic heart disease43%
• Heart failure37%

Hospitals where Jillian J. Nickelsen works

Medicare's Facility Affiliation Data lists Jillian J. Nickelsen 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.

• Mercy Regional Medical CenterDurango, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060013
• Southwest Memorial HospitalCortez, CO · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 061327

Practice locations

Addresses where Jillian J. Nickelsen is enrolled with Medicare (CMS data updated October 2, 2026).

• 1010 Three Springs BlvdDurango, CO 81301
• 41 State Hwy 67Woodland Park, CO 80863

Group practices

Medicare enrollment lists Jillian J. Nickelsen as a member of this group (CMS data updated October 2, 2026).

• Catholic Health Initiatives Colorado1,225 clinicians in the group

Specialties

• Hospitalistprimary

Find other Hospitalist doctors in Colorado →

Other hospitalists in Durango

Clinicians with the same Medicare primary specialty in Durango, CO — not a recommendation.

• Tonya K. Anderson, MD
• Sarah E. Brown, MD
• Jennifer K. Heinicke, MD
• Heather J. Hornbacher, DO
• Matthew Stanton, DO
• Brianna Muller, MD
• Christopher D. Dondlinger, MD
• Benjamin Huneycutt, MD

All hospitalists in Durango →

Other clinicians in Catholic Health Initiatives Colorado

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

• Ellen E. Jennings, NP
• Jessica M. Latham, PA
• Jerry M. Greenberg, MD
• James Caines, DO
• Jennifer L. Romero, NP
• Wade M. Sessions, 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