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Dr. Jacob Mark

Pediatric Gastroenterology (Pediatric Gastroenterology Physician)

13123 E 16th Ave
Aurora, CO 80045

Who else practices at this address →

Adams County includes primary care (2% of residents) shortage areas. About shortage areas

Call (720) 777-1234

At a glance

Years since graduation
14
In the NPI registry since
2012

Licensed in Colorado since 2015, according to the Colorado Department of Regulatory Agencies. 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. What an NPI is

Education and training

  • 2012Medical school: Boston University School of Medicine
  • 2012Registered with an NPI (national billing number; not a license date)

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
    CO license DR.0055431 (first issued 2015; active)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Pediatric Gastroenterology per capita by county →

Where they work

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Payments from drug and device companies

In 2025, 1 companies reported 2 payments worth $152 in total to this clinician.

By type
Food and Beverage$152

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.

Who received the most in Colorado →

Other Pediatric Gastroenterology clinicians in Aurora

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 28, 2018), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1437416955. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.