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Hospitalist

Cathy O'Neil, MD

Works at hospitals in Lakewood, CO · Westminster, CO · Lamar, CO … · Colorado, Iowa

Summary

Cathy O'Neil, MD (Hospitalist) is listed by Medicare at 4 hospitals in Lakewood, CO, Westminster, CO and Lamar, CO and other places. NPI 1003955279. 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 Cathy O'Neil, 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

HospitalistPrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
FemaleGender (as listed)
Catholic Health Initiatives ColoradoGroup practice (+3 more)

Quick answers

Which hospitals does Cathy O'Neil work at?
Medicare's official clinician data lists Cathy O'Neil at 4 hospitals: Centura Health-St Anthony Hospital, Centura Health-St Anthony North Health Campus, Prowers Medical Center and Southeast Iowa Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Cathy O'Neil see patients?
Medicare's clinician data lists 11 practice locations, including Shawnee, OK, Oklahoma City, OK and Lakewood, CO. Call before your visit to confirm the address.
What is Cathy O'Neil's specialty?
Medicare lists Hospitalist as the primary specialty.
Does Cathy O'Neil accept Medicare assignment?
Yes. Medicare's clinician data says Cathy O'Neil 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.
What is the phone number for Cathy O'Neil?
(405) 272-4978, as listed in official Medicare / NPI Registry data.
What is Cathy O'Neil's NPI number?
1003955279. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Cathy O'Neil works

Medicare's Facility Affiliation Data lists Cathy O'Neil 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 Cathy O'Neil is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.

Group practices

Medicare enrollment lists Cathy O'Neil as a member of these groups (CMS data updated 2026-10-02).

  • Catholic Health Initiatives Colorado1,225 clinicians in the group
  • Range Regional Health Services353 clinicians in the group
  • Grand Itasca Clinic and Hospital323 clinicians in the group
  • Metro Physicians LLC56 clinicians in the group

Specialties

Find other Hospitalist doctors in Oklahoma →

Other hospitalists in Oklahoma

Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.

All hospitalists in Oklahoma →

Clinician information

CredentialMD
Graduation year1994
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003955279
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