Med-Peds Faculty 

Med-Peds Faculty are Internal Medicine and Pediatrics trained faculty, in multiple subspecialties, dedicated to provide mentorship and coaching for those choosing to continue training in any of the many subspecialties.​ 


William C. Anderson III, MD
Assistant Professor Pediatric Allergy & Immunology
Associate Program Director Allergy & Immunology Fellowship
Internal Medicine and Pediatrics
William Anderson III 150Bill received his bachelor’s degree from Bucknell University and his MD from Georgetown University School of Medicine. Bill completed his Med-Peds residency at the University of Pittsburgh Medical Center, where he served as Med-Peds chief resident. Following residency, Bill moved west to Colorado where he completed his Allergy and Immunology fellowship at National Jewish Health/University of Colorado.
After completing his fellowship, Bill joined the faculty at the University of Colorado School of Medicine, where he practices Allergy and Immunology at Children’s Hospital Colorado.  In this role, he is co-director of the Multidisciplinary Asthma Clinic. In addition, Bill is the co-associate program director for the Allergy and Immunology fellowship at Children’s Hospital Colorado. He also serves as a representative on the Children’s Hospital Colorado transitional care governance team.

Bill’s clinical and scholarly interests include severe and difficult-to-treat asthma, transitional care, innovative clinical programs, and incorporation of technology into health care.  Within the Med-Peds residency, he is a mentor, teaches during academic half days, and serves on the clinical competency and recruitment committees. 


Tyler Buckner, MD, MSc
Assistant Professor BMT/Hematologic Malignancies
Internal Medicine and Pediatrics​  

Tyler Buckner 150Tyler is a native Tennessean and graduate of Rhodes College in Memphis, TN. He attended medical school at the University of North Carolina – Chapel Hill, where he also completed Internal Medicine and Pediatrics residency and a combined adult and pediatric Hematology fellowship. 
Dr. Buckner joined the CUSOM faculty at CU in January 2015, and he holds dual appointments in Hematology and Pediatric Hematology/Oncology. 

Tyler provides clinical care to adults and children with bleeding and clotting disorders, and his research focuses on measurement of patient-reported outcomes in individuals with bleeding disorders. He has been involved with the med-peds residency program as an interviewer and advisor to CU medical students since 2016.


Nick Breitnauer, MD
Assistant Professor of Internal Medicine and Pediatrics
Primary Care Physician Denver Health
Continuity Clinic Faculty
Resident Coach
Med-Peds Phase IV Student Elective Course Co-Director
Nick Breitnauer 150Nick has lived a geographically anchored life. Growing up in rural western Colorado, he completed his undergraduate and medical school training at the University of Colorado at Boulder and then Anschutz campuses, respectively. The timely creation of a new Med-Peds residency at CU seemed almost too good to be true given the beauty of the state and the quality of the internal medicine and pediatric residency programs.
He joined Denver Health in the fall of 2018 and works as a primary care provider at the Southwest Federico Pena Family Health Center. Clinical duties also include working with residents in continuity clinic, shifts in the on-site urgent care, and several weeks as an inpatient attending on the pediatric wards.

Nick enjoys all things Colorado, especially skiing, camping, and the Denver Broncos. All other free time is spent with his wife, Brooke, and his son, Max.  



Joseph Kay, MD
Associate Professor of Internal Medicine and Pediatrics
Director of Colorado's Adult and Teen Congenital Heart Disease Program (CATCH)
Joseph Kay 150Dr. Kay has appointments in both Internal Medicine and Pediatrics, and works as a staff cardiologist at both Children’s Hospital Colorado and University of Colorado Hospital. He received his M.D. from State University of New York at Buffalo, and then completed his combined Internal Medicine and Pediatrics residency at the University of Michigan, were he stayed on for an additional year as a Pediatric Chief Resident. He then proceeded to complete a combined fellowship in both adult and pediatric cardiology at Duke University Hospital. 
Dr. Kay has been on faculty at the University of Colorado School of Medicine since 2004, and has serviced as the CATCH Program Director since 2006.  
His clinical and research focus remain outcomes of Adults with congenital heart disease, and he is a member of the Alliance of Adult research in Congenital Disease (AARCC), whose mission is to foster multicenter research in adults with congenital heart disease.  

In addition, he is an invasive cardiologist, performing interventions on children and adults with congenital heart disease. Joe is a fellow of the American College of Cardiology, and a member of the American Heart Association. ​​


Amber Khanna, MD
Associate Professor Cardiology
Medical Director Cardiovascular Center
Internal Medicine and Pediatrics​ 
Resident Mentor 
Amber Khanna 150Amber’s clinical and research interests are congenital heart disease, Marfan syndrome and related disorders, and pregnancy associated heart disease. She received her bachelor’s degree from the University of South Dakota and started medical school there. She finished medical school at the University of Texas Southwest Medical Center. She did her internal medicine and pediatrics training at the University of North Carolina – Chapel Hill. At Mayo Clinic, she did an adult cardiology fellowship and an adult congenital heart disease fellowship. 
She joined the faculty of University of Colorado in the Department of Medicine and Department of Pediatrics in 2011. She sees patients in her outpatient clinics, reads echocardiograms at University of Cardiology Hospital, and attends on the adult cardiology inpatient service. 

She enjoys spending time with her husband and their three children. They all like skiing, hiking, and travelling. 


Meghann Kirk, MD
​​Continuity Clinic Faculty
Assistant Professor of Internal Medicine and Pediatrics
Primary Care Physician Denver Health
Continuity Clinic Faculty 

Meghann Kirk 150Dr. Kirk graduated from University of Colorado at Boulder with a degree in Biology and spent 15 years in Washington, DC where she attended Georgetown University School of Medicine and completed her Medicine and Pediatrics combined residency in 2009.    

At Georgetown she was a core faculty preceptor in Med-Peds continuity clinic and GIM resident clinic, and she was active in medical student and resident teaching in the clinic, hospital, and classroom. She also enjoyed taking care of patients of all ages and teaching as a volunteer at the HOYA family shelter clinic.  
She feels fortunate for the time she spent in Honduras teaching residents and helping to train village community health workers. While in DC she also completed formalized training in mind-body medicine and enjoys integrating this training in her clinical practice and education roles.  
She joined Denver Health at the new Southwest Federico Pena Family Health Center in 2016 and she has enjoyed seeing patients of all ages in this every special community. She loves teaching in continuity clinic and will take over as clerkship director for the Adult Ambulatory Care block in November 2016.  

She enjoys hiking, yoga, cooking, skiing and dance and is elated to be back in Colorado.​

Aaron Manning, MD
Assistant Professor of Internal Medicine and Pediatrics
Internal Medicine-Pediatric Hospitalist University of Colorado, Childrens Hospital of Colorado
Resident Coach, Point of Care Ultrasound (POCUS) Liaison

Med-Peds Phase IV Student Elective Course Co-Director

Aaron Manning 150Aaron grew up in the small town of Columbia, North Carolina and earned his undergraduate and medical degrees at the University of North Carolina at Chapel Hill. He decided to exchange the Appalachian Mountains for the Rockies in 2014, and joined the very first Med-Peds residency class at the University of Colorado. Aaron became hooked on the Colorado lifestyle during residency, and decided to stay in Denver after graduating. He now works as a hospitalist, becoming the first to spend half of his time at Children’s Hospital Colorado and half at University of Colorado Hospital.

In his free time, Aaron enjoys spending time with his wife, Hadley, and two children, Madeline and Jack. Like most Coloradans, he enjoys hiking and camping in the summer and skiing as well as snowboarding in the winter. He’s also an avid basketball fan (with a few Denver recreational league championships he can brag about) and a Tar Heel sports diehard. Aaron looks forward to staying closely involved with the Med-Peds program as a part of the core faculty. 



Other Med-Peds Faculty:

Debra Anoff, MD – Adult Hospitalist, University of Colorado Hospital

Adam Beitscher, MD- Med-Peds Hospitalist, Denver Health

Brian Bost, MD- Med-Peds Hospitalist, CHCO, Kaiser

Geoffrey Capes, MD- Primary Care, University of Colorado Hospital

Ethan Cumbler, MD- Adult Hospitalist, University of Colorado Hospital

Robin Deterding, MD- Pediatric Pulmonary, CHCO

Hillary Dunlevy, MD- Adult Infectious Disease, University of Colorado Hospital

Arun Kannappan, MD - Adult Intensivist, University of Colorado Hospital

Madhukar Kollengode- Adult Congenital Heart, University of Colorado Hospital, CHCO

Anne Hall, MD- Neonatology, University of Colorado Hospital

Flavia Hoyte, MD- Allergy/Immunology, National Jewish Health/UCH

Ricky Mohan, MD- Pediatric Pulmonary, CHCO

Daniel Reirden, MD - Adolescent Medicine and Infectious Disease, CHCO, former Med-Peds Program Director

Sarah Rowan, MD- Adult Infectious Disease, Denver Health