Dr. Mark E. Mcomber, MD
Pediatric Gastroenterology (Pediatric Gastroenterology Physician)
1919 E Thomas Rd
Phoenix, AZ 85016
Who else practices at this address →
Maricopa County includes primary care (13% of residents) and dental (0% of residents) and mental health (4% of residents) shortage areas. About shortage areas
At a glance
- Medical school
- University of Louisville School of Medicine (2001)
- Years since graduation
- 25
- In the NPI registry since
- 2006
Licensed in Texas since 2004, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2001Medical school: University of Louisville School of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Pediatric Gastroenterology Physician primary
AZ license 37488 -
Pediatrics Physician
TX license L9357 (first issued 2004; canc non-renewal)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Phoenix Children's Hospital (437 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Lansoprazole Other prescribers in Phoenix, AZ | 33 |
| Linzess (linaclotide) Other prescribers in Phoenix, AZ | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 4 companies reported 7 payments worth $253 in total to this clinician.
| Genzyme Corporation | $113 |
|---|---|
| AbbVie Inc. | $84.63 |
| Alcresta Therapeutics, Inc. | $31.12 |
| Janssen Biotech, Inc. | $23.93 |
| Food and Beverage | $253 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.