CU Obstetrics and Gynecology Residency Program

CU Obstetrics and Gynecology Residency Program

CU Obstetrics and Gynecology Residency Program

Welcome to the CU OB-GYN Residency Program

The University of Colorado Obstetrics and Gynecology Residency Program has proudly trained outstanding physicians for over 60 years. We are committed to developing future leaders who will shape the health of patients and communities across Colorado and beyond.

Our residents gain outstanding clinical experience across three distinct hospital systems — University of Colorado Hospital, Denver Health Medical Center, and Rose Medical Center — giving them exposure to a wide range of patient populations and healthcare settings. They rotate through all sites, building skills and confidence with increasing responsibility each year, ultimately stepping into leadership roles as chief residents in their final year.

In addition to comprehensive clinical training, we offer opportunities in quality improvement, palliative care, interprofessional education, advocacy, research, and global health. Our innovative curriculum, led by passionate and supportive faculty, prepares residents to thrive in whatever path they choose — whether private practice, rural care, or competitive subspecialty fellowships.

Education is at the heart of what we do. Residents learn through direct, hands-on clinical care, weekly didactics, simulation training, and protected research time. Our structured intern boot camp and specialized workshops in teaching, advocacy, and quality improvement provide unique, enriching learning experiences. Colorado provides unmatched opportunities for training across the full spectrum of reproductive healthcare, including comprehensive family planning services. Residents also look forward to signature events like our annual Colorado Lobby Day and the resident retreats.

Above all, the Department of OB-GYN at the University of Colorado is a place where residents are supported, challenged, and encouraged to reach their fullest potential. We care deeply about your wellness, growth, and success — both inside and outside the hospital.

Thank you for your interest in our program. We can't wait to meet you and welcome you to Denver!




CU OB-GYN Residency Program Leadership

 

Christine Conageski, MD, MS

Christine Conageski, MD, MSc

Residency Program Director

Christine Conageski, MD, MSc

Residency Program Director


OB-GYN Interests

Medical education, lower genital tract disease, infectious disease, cervical, vulvar and anal dysplasia.


Education

Case Western Reserve University

Undergrad

University of Cincinnati College of Medicine

Medical School

University of Colorado

Residency

Why I Like Denver

I'm from the Midwest so I feel very comfortable here. The people are friendly, the weather is mild compared to Michigan where I was born and we are surrounded by endless outdoor activities and awesome vistas everywhere you turn.


Personal Interests

Spending time with my family! This includes everything from swimming, hiking, biking, going to the zoo, eating ice cream and teaching them about the world around them. Plus, I couldn’t live without my Peloton!

 

Nicole Larrea, MD

Nicole Larrea, MD

Associate Program Director, Denver Health

Nicole Larrea, MD

Associate Program Director, Denver Health


OB-GYN Interests

Care for vulnerable populations, ultrasound, emergency obstetrics/gynecology, female genital cutting and asylum care.


Education

Princeton University

Undergrad

University of Texas Southwestern Medical School

Medical School

University of Colorado

Residency

Why I Like Denver

I like the easy access to outdoor activities / the mountains while also getting to live in a city.


Personal Interests

Spending time outdoors with my family, cycling when time allows

 

Sarah Peterson, MD

Sarah Peterson, MD

Associate Program Director, Rose Hospital

Sarah Peterson, MD

Associate Program Director, Rose Hospital


OB-GYN Interests

Coming soon!


Education

University of Michigan

Undergrad

Wayne State University School of Medicine

Graduate Degree

Wayne State University School of Medicine

Medical School

University of Colorado

Residency

Stanford Hospital and Clinics Program

Fellowship

Why I Like Denver

Coming soon!


Personal Interests

Coming soon!

 

Shannon Son, MD, MSci

Associate Program Director, University Hospital

Shannon Son, MD, MSci

Associate Program Director, University Hospital


OB-GYN Interests

I am a Maternal-Fetal Medicine Physician and have special interests in Cardio-Obstetrics as well as complex deliveries including operative and multifetal deliveries. I aim to provide patient centered and individualized care for all pregnant people and hope to promote the same in my teaching. I am lucky to work with residents and fellows in our High Risk and Diabetes clinics both at the University and Denver Health.


Education

University of Arizona

Undergrad

University of Utah

Graduate School

University of Washington

Medical School

University of Colorado

Residency

University of Utah

Fellowship

Why I Like Denver

I love Denver because of all it has to offer. With a large city and mountains close by, people with various interests are able to find their home.


Personal Interests

I love to spend time outdoors, mostly riding bikes and hiking with my family. I also love spending time in the mountains all year round and being close to an international airport for easy travel.

 

Spyridon Alex Mastroyannis, MD, MSci

Associate Program Director, University Hospital

Spyridon Mastroyannis, MD, MSCE

Associate Program Director, University Hospital


OB-GYN Interests

 


Education

Yale University (CT)

Undergrad

University of Pennsylvania

Graduate School

George Washington University School of Medicine and Health Sciences

Medical School

Hospital of the University of Pennsylvania

Residency

University of Pennsylvania Health System Program

Fellowship

Why I Like Denver

Coming soon!


Personal Interests

Coming soon!

Christine Conageski, MD, MSc

Residency Program Director


OB-GYN Interests

Medical education, lower genital tract disease, infectious disease, cervical, vulvar and anal dysplasia.


Education

Case Western Reserve University

Undergrad

University of Cincinnati College of Medicine

Medical School

University of Colorado

Residency

Why I Like Denver

I’m from the Midwest so I feel very comfortable here. The people are friendly, the weather is mild compared to Michigan where I was born and we are surrounded by endless outdoor activities and awesome vistas everywhere you turn.


Personal Interests

Spending time with my family. This includes everything from swimming, hiking, biking, going to the zoo, eating ice cream and teaching them about the world around them. Plus, I couldn’t live without my Peloton!

Nicole Larrea, MD

Associate Program Director, Denver Health


OB-GYN Interests

Care for vulnerable populations, ultrasound, emergency obstetrics/gynecology, female genital cutting and asylum care.


Education

Princeton University

Undergrad

University of Texas Southwestern Medical School

Medical School

University of Colorado

Residency

Why I Like Denver

I like the easy access to outdoor activities / the mountains while also getting to live in a city.


Personal Interests

Spending time outdoors with my family, cycling when time allows

Sarah Peterson, MD

Associate Program Director, Rose Hospital


OB-GYN Interests

Coming soon!


Education

University of Michigan

Undergrad

Wayne State University School of Medicine

Graduate Degree

Wayne State University School of Medicine

Medical School

University of Colorado

Residency

Stanford Hospital and Clinics Program

Fellowship

Why I Like Denver

Coming soon!


Personal Interests

Coming soon!

Shannon Son, MD, MSci

Associate Program Director, University Hospital


OB-GYN Interests

I am a Maternal-Fetal Medicine Physician and have special interests in Cardio-Obstetrics as well as complex deliveries including operative and multifetal deliveries. I aim to provide patient centered and individualized care for all pregnant people and hope to promote the same in my teaching. I am lucky to work with residents and fellows in our High Risk and Diabetes clinics both at the University and Denver Health.


Education

University of Arizona

Undergrad

University of Utah

Graduate School

University of Washington

Medical School

University of Colorado

Residency

University of Utah

Fellowship

Why I Like Denver

I love Denver because of all it has to offer. With a large city and mountains close by, people with various interests are able to find their home.


Personal Interests

I love to spend time outdoors, mostly riding bikes and hiking with my family. I also love spending time in the mountains all year round and being close to an international airport for easy travel.

Spyridon Alex Mastroyannis, MD, MSCE

Associate Program Director, University Hospital


OB-GYN Interests

Coming soon!


Education

Yale University (CT)

Undergrad

University of Pennsylvania

Graduate School

George Washington University School of Medicine and Health Sciences

Medical School

Hospital of the University of Pennsylvania

Residency

University of Pennsylvania Health System Program

Fellowship

Why I Like Denver

Coming soon!


Personal Interests

Coming soon!

To develop comprehensively trained specialists in Obstetrics and Gynecology who will serve as leaders in reproductive healthcare.

CU OB-GYN Residency Mission Statement

 

Hello and welcome to our CU OB-GYN Residency Page! We are so glad you are considering our program for your training. There are a multitude of reasons we have loved our training here. It would be impossible to outline them all in just a couple of paragraphs, so we’ll focus on the three big ones: diversity of clinical experiences, fulfilling interprofessional relationships, and life in Colorado!
 
We rotate at three different hospitals (academic, county, and private), which enables residents to train with a variety of providers and serve patients from a broad range of backgrounds and experiences. From participating in gender-affirming care at our LGBTQ Center of Excellence, to caring for our complex antepartum service at the University hospital, to extensive surgical experience operating with busy Gyn Onc and MIGS services, to full scope complex family planning in both the inpatient and outpatient setting, our residents get robust training in the many parts of obstetrics and gynecology that make it such a rewarding specialty. We have high clinical volume and graduate exceptionally well-trained OB-GYNs that feel ready to pursue both generalist and specialist practice.
 
Another fulfilling part of our program in Colorado is the community. Each residency class becomes incredibly close over the course of four years, and the same can be said with our relationships with the attendings. This program boasts a strong culture of graduated autonomy so that residents can practice at the top of their skill level with supportive supervision by their chiefs and attendings. Residents also work closely with midwifery colleagues and L&D nurses to nurture an environment of mutual learning and patient-centeredness.
 
Finally, we love Colorado! Whether it’s soaking in the sun on one of Denver’s many outdoor patios, hitting the ski slopes after a call shift, or going on a hike with the residency pups, we love to take advantage of the many amenities the Rocky Mountain state has to offer (with its 300 days of sunshine a year)!
 
We are so glad you decided to stop by, and very much hope to meet you soon!
 
Vera Schulte, MD & McKenna Kelly, MD
Administrative Chief Residents (2024-2025) 

 

UCHealth

Ranked #1 in Colorado by U.S. News & World Report

Children's Hospital Colorado

Rated #10 U.S. News Best Children's Hospitals Honor Roll

OB-GYN Clinical Research

179 Active Clinical Studies, 25 Active Clinical Trials

NIH Funding

Rated #13 in OB-GYN NIH Funding to US Medical Schools in 2018

 

Contact Info

Christine Raffaelli
Residency Coordinator
12631 East 17th Avenue
Room 4007, B198-6
Aurora, CO 80045

Phone: (303) 724-2052
Fax: (303) 724-2055

 

Joshua Caraballo
Medical Student and Residency Program Coordinator
12631 East 17th Avenue
Room 4007, B198-1
Aurora, CO 80045

Phone: (303) 724-2052
Fax: (303) 724-2055

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