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Anesthesiology

Adam D. Simonsen, DO

Works at hospitals in Westminster, CO · Colorado

Summary

Adam D. Simonsen, DO (Anesthesiology) is listed by Medicare at 1 hospital in Westminster, CO. NPI 1235484023. 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 Adam D. Simonsen, 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

AnesthesiologyPrimary specialty
YesAccepts Medicare assignment
14Years since medical school (graduated 2012)
MaleGender (as listed)
Catholic Health Initiatives ColoradoGroup practice

Quick answers

Which hospitals does Adam D. Simonsen work at?
Medicare's official clinician data lists Adam D. Simonsen at 1 hospital: Centura Health-St Anthony North Health Campus. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Adam D. Simonsen see patients?
Medicare's clinician data lists 1 practice location in Westminster, CO. Call before your visit to confirm the address.
What is Adam D. Simonsen's specialty?
Medicare lists Anesthesiology as the primary specialty.
Does Adam D. Simonsen accept Medicare assignment?
Yes. Medicare's clinician data says Adam D. Simonsen 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 Adam D. Simonsen?
(720) 627-4479, as listed in official Medicare / NPI Registry data.
What is Adam D. Simonsen's NPI number?
1235484023. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Adam D. Simonsen works

Medicare's Facility Affiliation Data lists Adam D. Simonsen 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 Adam D. Simonsen is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Adam D. Simonsen as a member of this group (CMS data updated 2026-10-02).

  • Catholic Health Initiatives Colorado1,225 clinicians in the group

Specialties

Find other Anesthesiology doctors in Colorado →

Other anesthesiologists in Westminster

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

All anesthesiologists in Westminster →

Clinician information

CredentialDO
Graduation year2012
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235484023
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