Andrew A. Waas, MD

Medicare activity in 2024

Official CMS public-use data for Andrew A. Waas, 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. Critical care, first 30-74 minutes (99291)171 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)136 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)62 services
4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)39 services
5. Test to examine how well the lungs exchange gases (94729)32 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 cholesterol75%
• Arthritis51%
• COPD49%
• Chronic kidney disease42%
• Ischemic heart disease39%

Hospitals where Andrew A. Waas works

Medicare's Facility Affiliation Data lists Andrew A. Waas 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 ParkerParker, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060114
• AdventHealth PorterDenver, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060064
• Centura Health-St Anthony HospitalLakewood, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060015

Practice locations

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

• 274 Union Blvd, Suite 200Lakewood, CO 80228 (303) 951‑0600

Group practices

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

• Critical Care Pulmonary and Sleep Associates Professional LLP63 clinicians in the group

Specialties

• Internal Medicineprimary
• Critical Care (Intensivists)also
• Pulmonary Diseasealso

Find other Internal Medicine doctors in Colorado →

Other internal medicine doctors in Lakewood

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

• Kolene Bailey, MD
• Tiffany A. Koonce, DO
• Nicholas Poponea, DO
• Gerard S. Federico, DO
• Joanne E. Ruch, MD
• Jennifer K. Taylor, MD
• Ashley Woodworth, DO
• Vernon M. Smith Jr., MD

All internal medicine doctors in Lakewood →

Other clinicians in Critical Care Pulmonary and Sleep Associates Professional LLP

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

• Kolene Bailey, MD
• Anne E. Reihman, MD
• Anthony Khalifah, MD
• Oliver Bawmann, MD
• Amanda B. Savolt, NP
• Christopher J. Mowry, 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