Zachary Lambertsen, MD

Medicare activity in 2024

Official CMS public-use data for Zachary Lambertsen, 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. Dxa bone density measurement of hip, pelvis, spine including spine fracture assessment (77085)366 services
2. Interpretation of trabecular bone score (tbs) and report on fracture risk (77092)363 services
3. Ct scan of abdomen and pelvis with contrast (74177)213 services
4. Ct scan of chest without contrast (71250)194 services
5. X-ray of chest, 1 view (71045)177 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 cholesterol71%
• High blood pressure58%
• Arthritis51%
• Ischemic heart disease37%
• Osteoporosis27%
• Anxiety23%

Hospitals where Zachary Lambertsen works

Medicare's Facility Affiliation Data lists Zachary Lambertsen 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
• Centura Health-St Anthony North Health CampusWestminster, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060104
• University of Colorado Hospital AuthorityAurora, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060024

Practice locations

Addresses where Zachary Lambertsen is enrolled with Medicare (CMS data updated October 2, 2026).

• 4740 Pearl PkwyBoulder, CO 80301 (303) 449‑2730
• 4747 Arapahoe AveBoulder, CO 80303 (303) 465‑0401

Group practices

Medicare enrollment lists Zachary Lambertsen as a member of this group (CMS data updated October 2, 2026).

• Boulder Radiologists Inc P C12 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Colorado →

Other radiologists in Boulder

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

• Allen Katz, MD
• Richard M. Finer, MD
• Eric A. Van Bogaert, MD
• Nicholas W. Wickersham, MD
• Matthew H. Blomquist, MD
• Larry T. Nickell, MD
• Catherine J. Evans, MD
• Robert E. Helgans Iii, MD

All radiologists in Boulder →

Other clinicians in Boulder Radiologists Inc P C

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

• Jie Mao, MD
• Richard M. Finer, MD
• Nicholas W. Wickersham, MD
• Larry T. Nickell, MD
• Robert E. Helgans Iii, MD
• Matthew H. Blomquist, 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