Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark Gregory Faber, DO

Individual provider Internal Medicine Physician · NPI 1285167080

Dr. Mark Gregory Faber, DO practises Hematology/Oncology in Gilbert, Arizona. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2017, 9 years ago. Practices with Banner Cancer Center Specialists LLC, a 338-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona and New York.

Years since qualifying
9
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
AZ, NY
In the registry since
2017
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2946 E Banner Gateway Dr
Gilbert, AZ 85234-2165
Phone: (480) 256-6444
Fax: (480) 256-3359
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 010372 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 296420 (NY)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 296420 (NY)

Record details

NPI number1285167080
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 7, 2017
Last updated in NPPESMarch 22, 2026
Certification dateMarch 22, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2017 (9 years in practice)
Group practice Banner Cancer Center Specialists Llc — 338 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients118
Services billed 356 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $337 4 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Banner Cancer Center Specialists LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 338 clinicians in the practice; 12 are shown here.

Other providers in Gilbert