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Dr. Christopher L. Geiger, M.D.

Medical Oncology (Medical Oncology Physician)

1665 Aurora Ct
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

In the NPI registry since
2015
Medicare patients seen, 2024
68

Licensed in Colorado since 2020, 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

  • 2015Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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

  • Medical Oncology Physician primary
    CO license DR.0065500 (first issued 2020; active)
  • Hematology & Oncology Physician
    CO license TL.0006948
  • Student in an Organized Health Care Education/Training Program

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

Map: Medical Oncology per capita by county →

Medicare patients and services

Medicare patients, 2024
68
Services billed
298
Patients’ average age
77
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 40-54 minutes9939
New patient office or other outpatient visit, 60-74 minutes1515

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.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Abiraterone Acetate119
Prednisone
Other prescribers in Aurora, CO
88
Dexamethasone
Other prescribers in Aurora, CO
33
Nubeqa (darolutamide)29
Bicalutamide21
Prochlorperazine Maleate
Other prescribers in Aurora, CO
19
Oxycodone Hcl
Other prescribers in Aurora, CO
17
Fotivda (tivozanib hcl)16
Ondansetron Hcl
Other prescribers in Aurora, CO
13
Orgovyx (relugolix)11

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Medical Oncology clinicians in Aurora

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 21, 2021), 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 1124413430. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.