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Dr. Alexander Sun, MD

Hospitalist (Hospitalist Physician)

12605 E 16th Ave
Aurora, CO 80045

Who else practices at this address →

Adams County includes primary care (2% of residents) shortage areas. About shortage areas

Call (720) 848-0000

  • Medicare participating

At a glance

Years since graduation
11
In the NPI registry since
2015
Medicare patients seen, 2024
64

Licensed in Colorado since 2019, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2015Medical school: Perelman School of Med at the University of Pennsylvania
  • 2015Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Hospitalist Physician primary
    CO license DR.0061831 (first issued 2019; active)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Hospitalist per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
64
Services billed
253
Patients’ average age
78
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes11044
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes9346
Hospital discharge day management, more than 30 minutes2221
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes1212

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Other Hospitalist clinicians in Aurora

Sources

NPI registry (CMS NPPES, November 2026; record last updated August 14, 2019), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1891189262. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.