Douglas A. Dennis, MD

Medicare activity in 2024

Official CMS public-use data for Douglas A. Dennis, 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. X-ray of knee, 3 views (73562)214 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)175 services
3. X-ray of knee, 4 or more views (73564)151 services
4. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)136 services
5. X-ray for bone length assessment (77073)68 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 cholesterol75%
• Arthritis75%
• High blood pressure59%
• Ischemic heart disease28%
• Osteoporosis25%
• Anxiety23%

Hospitals where Douglas A. Dennis works

Medicare's Facility Affiliation Data lists Douglas A. Dennis 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 Castle RockCastle Rock, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060125
• AdventHealth LittletonLittleton, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060113
• AdventHealth PorterDenver, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060064
• Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050101

Practice locations

Addresses where Douglas A. Dennis is enrolled with Medicare (CMS data updated October 2, 2026).

• 2535 S Downing St, 100 Cojr Colo Joint ReplmtDenver, CO 80210 (720) 524‑1367

Group practices

Medicare enrollment lists Douglas A. Dennis as a member of this group (CMS data updated October 2, 2026).

• Portercare Adventist Health System774 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Colorado →

Other orthopedic surgeons in Denver

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

• Nathaniel Schaffer, MD
• Julie A. Melchior, MD
• David C. Gerhardt, MD
• Laura Snyder, DO
• Bradley J. Hawayek, MD
• John S. Woodward Jr., MD
• Kareem G. Sobky, MD
• Eric J. Lindberg, MD

All orthopedic surgeons in Denver →

Other clinicians in Portercare Adventist Health System

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

• Miranda J. Jackson
• Stacey L. Buchan, PA
• Katherine Diggins, PA
• Emily J. Burgess, NP
• Kori L. Zedaker, AU
• Lisa L. Zwiers, PA

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