Medical Degree: ​University of Pittsburgh School of Medicine

Residency: Emory University

Fellowship​: University of Colorado

Infectious Disease Interests

Antibiotic-resistant infections, HIV


Dr. Siebert is a Colorado native. He enjoys skiing, cheering on all of the local sports teams, and spending time with his wife, Jenny, and their son.

Our Physicians

Gabriela Kaufman, MD, PLLC

Joined CIDA 2010

Languages: English, Spanish

Joined CIDA 2009

Languages: English

Colorado Infectious Disease Associates

Paul Siebert, MD

Joined CIDA 2003

Languages: English, Romanian, Hungarian

Joined CIDA 2013

Languages: English, Romanian

Shelley Kon, MD

Joined CIDA 2020

Languages:  English

Medical Degree: ​University of Colorado School of Medicine

Residency: Georgetown University

Fellowship​: University of Colorado

Infectious Disease Interests
HIV, bone and joint infections, heart infections, hospital acquired infections, and immunocompromised patients

Dr. Kon was chosen to be Chief Resident at Georgetown and spent an additional year as an advanced research fellow at University of Colorado Hospital. She enjoys spending time with her two boys and husband in the great outdoors of Colorado.

Medical Degree: ​Vanderbilt University

Residency: University of Colorado

Fellowship​: University of California, Davis

Infectious Disease Interests

HIV/Hepatitis C co-infection, AIDS, Coccidioides immitis infections


Dr. Eison likes to spend as much time enjoying many of Colorado's outdoor sports as possible. He is married to Dr. Michelle Draznin, and together they have two children.

Simona Oprea, MD, PC

Robert Eison, MD, PLLC

Joined CIDA 2013

Languages: English

Sean Pawlowski, MD, PLLC


Medical Degree: ​University of Texas Health Science Center

Residency: University of Colorado

Fellowship​: University of Virginia

Infectious Disease Interests

Treatment of Clostridium difficile infections, hospital infection control, antibiotic stewardship


Dr. Pawlowski enjoys spending his personal time fishing and spending time with his family. It is also rumored that he is an excellent cook. He is married to Dr. Aimee Truesdale, and they have two girls that keep them busy.

Kathryn Springer, MD, PC

Medical Degree: ​Iuliu Hațieganu University of Medicine and Pharmacy, Romania

Residency: Beaumont Health System

Fellowship​: Beaumont Health System

Infectious Disease Interests



Dr. Oprea originally comes from Romania. She is the winner of the Healthgrades Hospital Award for Clinical Excellence in both 2013 and 2015. She is married to Dr. Mircea Petrina and enjoys spending time with him and their three children.

Call Us:  (303) 777-0781

Joined CIDA 2019

Languages: English

Medical Degree: ​University of North Carolina

Residency: Dartmouth-Hitchcock

Fellowship​: University of Colorado

Infectious Disease Interests

Director of travel medicine and infection control at Porter Adventist Hospital, director of wound care and infection control at Kindred Hospital Denver


Dr. Springer was raised in North Carolina. Her passions are caring for a diverse range of patients with various infectious disease issues. She is well-known for being thorough and compassionate. She is married to Dr. Erik Springer and enjoys spending time with him and their two boys.

Medical Degree: Victor Babeș University of Medicine and Pharmacy, Romania

Residency: University of Wisconsin

Fellowship​: University of Utah

Infectious Disease Interests

Developed and maintained a subsidiary travel clinic in her previous job with Mayo Health


Dr. Kaufman is originally from Romania. She proudly holds a second-degree black belt in Taekwondo and enjoys reading, skiing, travel, and outdoor activities, as well as maintaining a busy schedule with her childrens' school and many athletic endeavors in her off time.