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Hematology/Oncology

Mark G. Faber, DO

Works at hospitals in Gilbert, AZ · Glendale, AZ · Arizona

Summary

Dr. Mark G. Faber, DO is a hematologist-oncologist at 2946 E Banner Gateway Dr, Gilbert, AZ 85234. Phone: (480) 256-6444. Accepts Medicare assignment. In 2024, Mark G. Faber had 118 Original Medicare patients and 356 services. NPI 1285167080. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Hematologist-oncologist (Medicare lists Hematology/Oncology)
  • Address: 2946 E Banner Gateway Dr, Gilbert, AZ 85234 · Directions
  • Phone: (480) 256‑6444
  • Medicare: Accepts Medicare assignment
  • Hospitals: Banner Gateway Medical Center, Banner Thunderbird Medical Center
  • Group practice: Banner Cancer Center Specialists LLC
  • Medical school: Lake Erie College Of Osteopathic Medicine, Erie · graduated 2017 (9 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Mark G. Faber, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Mark G. Faber accept Medicare assignment?
Yes. Medicare's clinician data says Mark G. Faber accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Mark G. Faber see?
In 2024, CMS data shows 118 Original Medicare patients and 356 services for Mark G. Faber. This counts Original Medicare only and measures volume, not quality.
What is Mark G. Faber's NPI number?
1285167080. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Mark G. Faber, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients118
Services billed to Medicare356
Different services or procedures18
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)100 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)83 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)23 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)16 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol72%
  • Arthritis52%
  • Chronic kidney disease42%
  • Ischemic heart disease35%
  • Diabetes31%

Hospitals where Mark G. Faber works

Medicare's Facility Affiliation Data lists Mark G. Faber at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Mark G. Faber is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mark G. Faber as a member of this group (CMS data updated October 2, 2026).

  • Banner Cancer Center Specialists LLC344 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Arizona →

Other hematologist-oncologists in Gilbert

Clinicians with the same Medicare primary specialty in Gilbert, AZ — not a recommendation.

All hematologist-oncologists in Gilbert →

Other clinicians in Banner Cancer Center Specialists LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1285167080
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians