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Medical Oncology

Douglas Reznick, MD

Works at hospitals in Littleton, CO · Englewood, CO · Lone Tree, CO … · Colorado

Summary

Douglas Reznick, MD (Medical Oncology) is listed by Medicare at 4 hospitals in Littleton, CO, Englewood, CO and Lone Tree, CO and other places. NPI 1124002456. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Douglas Reznick, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Medical OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
35Years since medical school (graduated 1991)
MaleGender (as listed)
Rocky Mountain Cancer Centers LLPGroup practice

Quick answers

Which hospitals does Douglas Reznick work at?
Medicare's official clinician data lists Douglas Reznick at 4 hospitals: AdventHealth Littleton, Hca-Healthone dba Swedish Medical Center, Sky Ridge Medical Center and The Medical Center of Aurora & South Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Douglas Reznick see patients?
Medicare's clinician data lists 7 practice locations, including Lone Tree, CO, Denver, CO and Littleton, CO. Call before your visit to confirm the address.
What is Douglas Reznick's specialty?
Medicare lists Medical Oncology as the primary specialty.
Does Douglas Reznick accept Medicare assignment?
Yes. Medicare's clinician data says Douglas Reznick accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Douglas Reznick offer telehealth?
Medicare's clinician data says Douglas Reznick offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Douglas Reznick?
(303) 925-0700, as listed in official Medicare / NPI Registry data.
What is Douglas Reznick's NPI number?
1124002456. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Douglas Reznick works

Medicare's Facility Affiliation Data lists Douglas Reznick at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Douglas Reznick is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Douglas Reznick as a member of this group (CMS data updated 2026-10-02).

  • Rocky Mountain Cancer Centers LLP132 clinicians in the group

Specialties

Find other Medical Oncology doctors in Colorado →

Other oncologists in Lone Tree

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

All oncologists in Lone Tree →

Clinician information

CredentialMD
Graduation year1991
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1124002456
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians