Mark J. Del Rosario, MD

Medicare activity in 2024

Official CMS public-use data for Mark J. Del Rosario, 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 50 minutes (99233)293 services
2. Hospital discharge day management, more than 30 minutes (99239)75 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)66 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)39 services
5. Critical care, first 30-74 minutes (99291)33 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%
• Arthritis60%
• Ischemic heart disease47%
• Depression47%
• Chronic kidney disease46%

Hospitals where Mark J. Del Rosario works

Medicare's Facility Affiliation Data lists Mark J. Del Rosario 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.

• AdventHealth PorterDenver, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060064

Practice locations

Addresses where Mark J. Del Rosario is enrolled with Medicare (CMS data updated October 2, 2026).

• 2525 S Downing StDenver, CO 80210
• 2535 D S Downing St, Suite 460Denver, CO 80210 (303) 744‑1065
• 2535 S Downing StDenver, CO 80210 (303) 778‑5797
• 7750 S Broadway, 260 South Denver NeurosurgeryLittleton, CO 80122 (303) 734‑8650

Group practices

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

• Portercare Adventist Health System774 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Colorado →

Other hospitalists in Denver

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

• Mary A. Wallace, MD
• Donna E. Okuda, MD
• Kristen C. Moore, MD
• Alyssa Manteufel, DO
• Adam Kolnik, MD
• Michael J. Solomon, DO
• Stephen J. Mazurkivich, MD
• Sarah B. Hubbell, MD

All hospitalists in Denver →

Other clinicians in Portercare Adventist Health System

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

• Ryan R. McWilliams, MD
• Paul M. Judiscak, DO
• William W. Choi, MD
• Gerald A. Helms, MD
• Julien E. Dagenais, MD
• Colleen R. Maher, DO

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