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General Surgery

Mark E. McMellen, MD

Works at hospitals in Lakewood, CO · Westminster, CO · Kremmling, CO … · Colorado

Summary

Mark E. McMellen, MD (General Surgery) is listed by Medicare at 4 hospitals in Lakewood, CO, Westminster, CO and Kremmling, CO and other places. NPI 1053597955. 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 Mark E. McMellen, 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

General SurgeryPrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
MaleGender (as listed)
Acute Care Surgery Medical Group IncGroup practice

Quick answers

Which hospitals does Mark E. McMellen work at?
Medicare's official clinician data lists Mark E. McMellen at 4 hospitals: Centura Health-St Anthony Hospital, Centura Health-St Anthony North Health Campus, Middle Park Medical Center and St Anthony Summit Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mark E. McMellen see patients?
Medicare's clinician data lists 1 practice location in Lakewood, CO. Call before your visit to confirm the address.
What is Mark E. McMellen's specialty?
Medicare lists General Surgery as the primary specialty.
Does Mark E. McMellen accept Medicare assignment?
Yes. Medicare's clinician data says Mark E. McMellen 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 Mark E. McMellen?
(720) 473-7120, as listed in official Medicare / NPI Registry data.
What is Mark E. McMellen's NPI number?
1053597955. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mark E. McMellen works

Medicare's Facility Affiliation Data lists Mark E. McMellen 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 Mark E. McMellen is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mark E. McMellen as a member of this group (CMS data updated 2026-10-02).

  • Acute Care Surgery Medical Group Inc204 clinicians in the group

Specialties

Find other General Surgery doctors in Colorado →

Other general surgeons in Lakewood

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

All general surgeons in Lakewood →

Clinician information

CredentialMD
Graduation year2006
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1053597955
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