Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gabriel E Marrero Rivera

Individual provider Internal Medicine Physician · NPI 1447707229

Gabriel E Marrero Rivera practises Gastroenterology in Pittsburgh, Pennsylvania. Graduated from University of Puerto Rico School of Medicine in 2017, 9 years ago. Practices with The Board of Trustees of the University of Illinois, a 1,142-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois and Pennsylvania.

Years since qualifying
9
Trained at
University of Puerto Rico School of Medicine
Licensed in
IL, PA
In the registry since
2016
Specialties on file
3
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Practice location Address checks out

200 Lothrop St
Pittsburgh, PA 15213
Phone: (412) 647-8666
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Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 1009 S Wood St, Chicago, IL 60612 — (312) 492-2706
  • E2 Chestnut Hill Cambridge Park, San Juan, PR 00926 — (787) 218-3018

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MT225105 (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036153080 (IL)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 036153080 (IL)

Record details

NPI number1447707229
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedSeptember 8, 2016
Last updated in NPPESOctober 31, 2025
Certification dateOctober 31, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice The Board Of Trustees Of The University Of Illinois — 1142 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 27 times · 52nd percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 17 times · 48th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at The Board of Trustees of the University of Illinois

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1142 clinicians in the practice; 12 are shown here.

Other providers in Pittsburgh