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Medical Oncology

Sami G. Diab, MD

Works at hospitals in Westminster, CO · Longmont, CO · Durango, CO … · Colorado

Summary

Sami G. Diab, MD (Medical Oncology) is listed by Medicare at 5 hospitals in Westminster, CO, Longmont, CO and Durango, CO and other places. NPI 1548244270. 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 Sami G. Diab, 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
38Years since medical school (graduated 1988)
MaleGender (as listed)
Catholic Health Initiatives ColoradoGroup practice (+1 more)

Quick answers

Which hospitals does Sami G. Diab work at?
Medicare's official clinician data lists Sami G. Diab at 5 hospitals: Centura Health-St Anthony North Health Campus, Longmont United Hospital, Mercy Regional Medical Center, Pagosa Springs Medical Center and Saint Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Sami G. Diab see patients?
Medicare's clinician data lists 2 practice locations, including Westminster, CO and Pagosa Springs, CO. Call before your visit to confirm the address.
What is Sami G. Diab's specialty?
Medicare lists Medical Oncology as the primary specialty, and also Hematology/Oncology and Internal Medicine.
Does Sami G. Diab accept Medicare assignment?
Yes. Medicare's clinician data says Sami G. Diab 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 Sami G. Diab?
(720) 627-4840, as listed in official Medicare / NPI Registry data.
What is Sami G. Diab's NPI number?
1548244270. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Sami G. Diab works

Medicare's Facility Affiliation Data lists Sami G. Diab 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 Sami G. Diab is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Sami G. Diab as a member of these groups (CMS data updated 2026-10-02).

  • Catholic Health Initiatives Colorado1,225 clinicians in the group
  • Upper San Juan Health Service District37 clinicians in the group

Specialties

Find other Medical Oncology doctors in Colorado →

Other oncologists in Colorado

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

All oncologists in Colorado →

Clinician information

CredentialMD
Graduation year1988
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1548244270
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