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

Mark Robert Gillis, MD

Individual provider Anesthesiology Physician · NPI 1154390177

Mark Robert Gillis, MD practises Anesthesiology in Layton, Utah. Graduated from University of New Mexico School of Medicine in 1989, 37 years ago. Practices with Bay Area Hospital District, a 124-clinician group and accepts Medicare assignment. Licensed in Oregon and Utah.

Years since qualifying
37
Trained at
University of New Mexico School of Medicine
Licensed in
OR, UT
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1600 W Antelope Dr
Layton, UT 84041
Phone: (801) 807-1000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD176903 (OR)
Anesthesiology Physician Taxonomy 207L00000X · Licence 50872591205 (UT)

Record details

NPI number1154390177
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 14, 2006
Last updated in NPPESJune 23, 2023
Certification dateJune 23, 2023

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF NEW MEXICO SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Bay Area Hospital District — 124 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients169
Services billed 181 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Bay Area Hospital District

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 124 clinicians in the practice; 12 are shown here.

Other providers in Layton