Physician Bios — DiMarino-Kroop-Prieto Gastrointestinal Associates

Meet Your Team

Howard Kroop, MD

Robert M. Coben, MD

Michael C. DiMarino, MD

Aarati B. Malliah, MD

Aarati B. Malliah, MD

Andrew Kistler, MD

Jorge Prieto, MD

Jeffrey A. Abrams, MD

Read Full Bio

Nicholas Orfanidis

Nicholas T. Orfanidis, MD

Colin Smith, MD

Colin Smith, MD

Andrew Dargan, MD

Lisa Rahaim

Christy Heltzel

Lisa Rahaim, APN-BC

Christy Heltzel, APN-BC

Jill Toal

Jillian Toal MSN, APN, FNP-BC

Dominika O’Brien APN-BC

Make An Appointment

Set Up a Screening Colonoscopy

Contact Us

Please do not submit any Protected Health Information (PHI)

Office Hours

Monday - Friday

Saturday - Sunday

7:00 am - 5:00 pm

Closed