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Diagnostic Radiology

Alexander Merkle, MD

Works at hospitals in Highlands Ranch, CO · Aurora, CO · Colorado

Summary

Dr. Alexander Merkle, MD is a radiologist in Aurora, CO, listed at UCHealth Highlands Ranch Hospital and University of Colorado Hospital Authority. Accepts Medicare assignment. In 2024, Alexander Merkle had 1,898 Original Medicare patients and 2,679 services. NPI 1033401260. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiologist (Medicare lists Diagnostic Radiology)
  • Medicare: Accepts Medicare assignment
  • Hospitals: UCHealth Highlands Ranch Hospital, University of Colorado Hospital Authority
  • Group practice: University Physicians Incorporated (+1 more)
  • Medical school: University Of Minnesota Medical School · graduated 2011 (15 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Alexander Merkle, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Alexander Merkle accept Medicare assignment?
Yes. Medicare's clinician data says Alexander Merkle accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Alexander Merkle see?
In 2024, CMS data shows 1,898 Original Medicare patients and 2,679 services for Alexander Merkle. This counts Original Medicare only and measures volume, not quality.
What is Alexander Merkle's NPI number?
1033401260. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Alexander Merkle, 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.

Original Medicare patients1,898
Services billed to Medicare2,679
Different services or procedures121
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. X-ray of shoulder, minimum of 2 views (73030)194 services
  2. X-ray of knee, 3 views (73562)190 services
  3. X-ray of hip, 2-3 views (73502)189 services
  4. X-ray of foot, minimum of 3 views (73630)182 services
  5. X-ray of entire middle and lower spine, 2-3 views (72082)111 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).

  • Arthritis75%
  • High cholesterol68%
  • High blood pressure67%
  • Depression30%
  • Osteoporosis28%
  • Ischemic heart disease27%

Hospitals where Alexander Merkle works

Medicare's Facility Affiliation Data lists Alexander Merkle 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.

Group practices

Medicare enrollment lists Alexander Merkle as a member of these groups (CMS data updated October 2, 2026).

  • University Physicians Incorporated3,215 clinicians in the group
  • UCHealth Imaging Services LLC258 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Colorado →

Other radiologists in Aurora

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

All radiologists in Aurora →

Other clinicians in University Physicians Incorporated

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

Clinician information

CredentialMD
Medical schoolUniversity Of Minnesota Medical School
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1033401260
CorrectionsReport an error or suggest an update →

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