Pediatric Hospital Medicine Fellowship


The University of Colorado Department of Pediatrics and Children's Hospital Colorado are proud to offer a two-year, ACGME-accredited Pediatric Hospital Medicine (PHM) Fellowship!

Our fellows will receive comprehensive, exceptional training and guidance in clinical care, scholarship, leadership, and education in our ACGME-accredited Pediatric Hospital Medicine fellowship program. At completion, fellows will be primed to begin a career in Pediatric Hospital Medicine in academic and/or community settings. Structure and allocation of time for clinical and scholarly pursuits align with ACGME requirements for PHM fellowship programs, allowing flexibility and individualization when possible so fellows can pursue their career goals.

Our fellowship program offers:

  • Superior academic training in a professional, collegial atmosphere
  • A breadth of scholarly opportunities in translational research, health services research, Medical Education, Clinical Effectiveness, patient safety, Global Health, advocacy, and Quality Improvement (QI)
  • Clinical experience at a free-standing children's hospital and community hospital settings
  • Dedicated clinical supervision and scholarly oversight by experienced faculty
  • Participation in educational and research conferences, M&M, journal clubs, work-in-progress sessions, and hospital committees
  • Opportunities to educate students, residents, Advanced Practice Providers, faculty, patients/families, and the community 
  • Unique leadership development training
  • Commitment to diversity, equity, and inclusion by creating an inclusive learning environment and celebrating differences while meeting the needs of our diverse patient population


Program Leadership

Brittan, Mark

Mark Brittan, MD, MPH
Program Director


Kimberly O'Hara, MD
Associate Program Director

Here is a video about Children's Hospital Colorado and our diverse faculty who mentor and coach learners, pursue their passions, and care for patients presenting with a broad array of conditions.

Inpatient Learning

Fellows will receive outstanding inpatient clinical experience at both our quaternary care and community hospitals. This experience includes working on the Hospital Medicine services at Children’s Hospital Colorado, the University of Colorado Newborn Nursery, and at one or more of our community or Network of Care sites. In addition, fellows will gain procedural and sedation experience, perform hospital medicine consultations, and co-manage patients with our surgical colleagues. They will also have the opportunity to rotate in our critical care units or Emergency Departments and with our Acute or Chronic Pain, Palliative Care, Newborn, and Complex Care services.  Responsibilities include taking calls from home and working very few evenings or overnight shifts each year.

Subspecialized Learning

Fellows will have the opportunity to explore specific areas of interest through clinical electives including but not limited to:

  • Infectious Disease
  • Transport Medicine
    Adolescent Medicine
  • Internal Medicine
  • Pulmonary
  • Gastroenterology
  • Nephrology
  • Cardiology
  • Neonatal Intensive Care
  • Pediatric Intensive Care
  • Child Abuse and Neglect
  • Global Health
  • Risk Management
  • Nutrition
  • Toxicology


Fellows will have substantial time allocated to developing scholarship. Opportunities exist for projects in translational research, health services research, Medical Education, Clinical Effectiveness, patient safety, Global Health, and Quality Improvement (QI). Our PHM Section has highly qualified mentors with varied interests and expertise (see Mentorship tab). The Section is supported by highly experienced Research Directors, research coordinators, statisticians, and a survey methodologist.

Scholarship Education & Certification

To enhance their research skills, fellows may participate in formal, local training programs on campus. These include the Master’s in Clinical Sciences (MSCS) Program, the Institute for Healthcare Quality, Safety and Efficiency (IQHSE) Certificate Training Program, or the Academy of Medical Educators' Teaching Scholars Program. These programs will be supplemented with Section of PHM’s monthly educational and research conferences, workshops through the Center for Faculty Development, Department of Pediatrics Fellowship Educational Series, work-in-progress sessions, and University-based learning opportunities through the Colorado Clinical and Translational Sciences Institute (CCTSI) and Adult & Child Center for Health Outcomes Research & Delivery Science (ACCORDS).

Fellows will be expected to participate in one or more QI initiatives, submit abstracts to conferences, apply for small grant applications, and begin to write manuscripts to peer-reviewed journals. Fellows interested specifically in QI have access to institutional leadership and Process Improvement specialists through the Quality and Patient Safety Department.

Fellows will be able to attend and present at local and national conferences, such as Children’s Colorado Clinical Concepts & Conundrums in Pediatric Hospital Medicine, local QI Symposiums hosted by CHCO and the University of Colorado, Council on Medical Student Education in Pediatrics (COMSEP) annual meeting, Pediatric Academic Societies’ annual meeting, and Pediatric Hospital Medicine annual meeting.

Medical Education

Our educational mission is to develop leaders skilled in the education of other learners, patients, families, and the community at large. Fellows will teach a variety of learners while conducting family-centered rounds at CHCO and our community hospitals. They will receive training and support to design educational curricula, present small group teachings or didactics in their areas of interest, provide effective feedback, and serve as mentees or mentors to others.


Educational learning opportunities at CU Anschutz include:



Leadership & Administration

PHM fellows are the hospital leaders of tomorrow. Our fellows will gain experience through leading process improvement teams, collaborating on hospital committees, participating in community outreach programs, and developing clinical pathways. Within the Section of PHM, there are notable leaders in administration, medical education, research, and Quality Improvement who will guide Fellows to develop leadership skills and competence (see Mentorship tab). Formal avenues of training include People Development at CHCO, which focuses on leadership style and effectiveness, personal evaluation, crucial conversations and communication models; the IHQSE Certificate Training Program; and the Academy of Medical Educators Faculty Development Program.

Program Mentorship

Leadership roles and scholarly interests for some faculty members of our PHM Section are listed in the attached PHM Mentor List.

Fellows may expand their knowledge and hone their skills through other forums within the Section of Pediatric Hospital Medicine and the Department of Pediatrics:

  • Work-in-Progress Sessions
  • Morbidity and Mortality conference
  • Journal Club
  • Morning Report
  • Noon Conference
  • Section of PHM educational and research conferences
  • Section of PHM Teaching Excellence Among Medical Providers (“TEAM”) Program
  • Section of PHM HOspital Medicine Mentorship and Engagement (“HOME”) Program
  • Department of Pediatrics Fellowship Educational Series and Grand Rounds

Diversity, Equity, and Inclusion

Our fellowship aims to build and maintain an infrastructure to recruit diverse fellows and provide an inclusive learning environment that promotes and celebrates differences. Our fellows have the opportunity to engage with the Children’s Hospital Colorado’s Diversity in Pediatrics Committee, the Minority and Allied Resident Council (MARC), Captains of Inclusion and other DEI leaders at CHCO, and many other groups on campus. For more information, please visit:

Ways to get involved:

  • Children’s Hospital Colorado’s Diversity in Pediatrics Committee

  • University of Colorado Minority and Allied Resident Council (MARC)

  • CHCO Health Equity Rounds

  • Scholarship and advocacy opportunities: Our hospitalists are actively engaged in research and advocacy work focusing on interpreter services project, social determinants of health, firearms injury prevention, depression and suicide screening, and more.

  • PHM Section's DEI Committee and Gender Allyship Committee

Training opportunities:

1st Year Fellows (2024-2026)


Kelsey Berry, MD


  • Undergrad: University of Mississippi
  • Medical School: University of Mississippi Medical School
  • Pediatric Residency 2020-2023: University of Virginia
  • Chief Residency 2023-20234: University of Virginia
  • Scholarly Interests: Student and resident medical education; global health; curriculum development
  • Selected Bibliography:
    • Sessions, J., Berry, K., Waggoner-Fountain, L., Borowitz, S. Is the ability for residents to co-orient contingent on performing the initial patient assessment? Poster presentation at Pediatric Academic Societies Meeting; May 2-6, 2024; Toronto, Canada.
    • Berry K, Burns A, Saito M, Gray S, Manthe E, Taylor J, Mendoza J. Safe implementation of evidence-based nutritional rehabilitation for hospitalized adolescents with eating disorders. Poster presentation at Pediatric Hospital Medicine Annual Conference; July 28-31 2022; Orlando, FL.
    • Berry K. A high yield review of cannabinoid hyperemess syndrome. The Hospitalist. Nov. 1, 2023.
Chinma Ugorji, MD, MSc
  • Undergraduate: Texas A&M
  • Medical School: Baylor College of Medicine (Houston, TX)
  • Graduate School: London School of Hygiene and Tropical Medicine
  • Internal Medicine-Pediatrics Residency (2020-2024): Geisinger (Danville, PA)
  • Chief Residency (2023-2024): Geisinger (Danville, PA) 
  • Scholarly interests: Diversity, Equity, and Inclusion; Social determinants of health; Medical Education
  • Selected Bibliography:
    • Onyewuenyi C, Ely A, Mak J. Exploring facilitators and barriers to condition self-management in young people with perinatal HIV. HIV Nursing 2020; 20(1); 3-7.
    • Onyewuenyi C. Social determinants of health and the pediatric inpatient team: How the outside matters on the inside. Oral presentation at Geisinger Educational Scholarship Symposium; May 2024; Danville, PA.




2nd Year Fellows (2023-2025)



Lauren McIntosh, MD


  • Undergrad: University of Michigan
  • Medical School: University of Michigan Medical School
  • Internal Medicine-Pediatrics Residency 2018-2022: Medical College of Wisconsin
  • Chief Residency 2022-2023: Internal Medicine-Pediatrics at the Medical College of Wisconsin
  • Scholarly Interests: Pediatric to adult transition of inpatient care, medical student and resident medical education: clinical reasoning
  • Selected Bibliography:
    • Blaty, A, Griffith, M, Steenbergh, K.E, McIntosh, L., Kapeles, S, Busingye, P, Kolars, J.C. March 2019. A Systematic Debrief for Formative Feedback in International Medical Education [Poster], Annual CUGH Global Health Conference, Chicago, Illinois.
    • Abibo,L, McIntosh, L, Menigo, L, Jethwa, T, Amjad, R. April 2022. Adults with Special Health Care Needs Have Longer Length of Stay when Admitted for CAP or UTI [Poster], Society of Hospital Medicine Converge, Nashville, Tennessee.
    • Toth, H. McIntosh, L. October 2022. Teaching and Feedback: Inpatient Style [Oral Presentation], General Internal Medicine Learning Academy. Medical College of Wisconsin, Milwaukee, WI.


Head Shot
Rachita Gupta, MD
  • Undergraduate: University of Toronto, Victoria College
  • Medical School: Boston University School of Medicine
  • Pediatric Residency: Kaiser Permanete Oakland Medical Center
  • Scholarly interestsQuality Improvement, medical education, mentorship, clinical pathway development, surgical co-management
  • Selected Bibliography:
    • Gupta R, Wang X. Improving Online Feedback Documentation for Residents. Oral presentation at: Association of Pediatric Program Directors (APPD) Conference; April 2202; San Diego, CA.
    • Gupta R, Anderson L, Bennett H, Roach J, Fennell M, Scarberry J, Zamkoff J, Hedrick J, Conant M, Lockwood J. Safety Officer: implementation of Bedside Hospitalist Support of Safety Practices on a Pediatric Surgical Unit. Poster presented at: Pediatric Academic Societies (PAS) Conference; May 2024; Toronto, Canada.
    • Gupta R, Giordano M, Percelay JM, Zamkoff J, Sewell TB, Lakhaney D, Mauskar S, Rappaport D, Mariani J, Muratova Z. Surgical Co-Management for Children with Medical Complexity. Workshop. Pediatric hospital Medicine (PHM) Conference; August 2024; Minneapolis, MN. 




Brandy Hoyt, MD
  • PHM Fellowship Training Years: 2022-2024
  • Undergraduate: University of Florida
  • Medical School: Herbert Wertheim College of Medicine
  • Pediatric Residency: University of South Florida
  • Chief Residency: University of South Florida
  • Scholarly interests:  Quality Improvement, Medical Education & Curriculum Development, Antibiotic Stewardship
Kimiko Dunbar, MD
  • PHM Fellowship Training Years: 2021-2023
  • Undergraduate: The College of William and Mary
  • Medical School: University of Michigan Medical School
  • Pediatric Residency: Boston Combined Residency Program
  • Chief Residency: Boston Combined Residency Program
  • Scholarly interests: Medical Education: Feedback and Assessment, Prevention of Bias in Evaluation
Brendan Mulhern, MD
  • PHM Fellowship Training Years: 2021-2023
  • Undergraduate: University of Illinois - Urbana-Champaign
  • Medical School: University of Minnesota – Twin Cities
  • Pediatric Residency: University of Colorado - Denver
  • Chief Residency: University of Colorado - Denver
  • Scholarly interests: Clinical Informatics, Quality Improvement


    John "Jay" Watson, MD
    • PHM Fellowship Training Years: 2020-2022
    • Undergraduate: Vanderbilt University
    • Medical School: University of Alabama at Birmingham School of Medicine
    • Pediatric Residency: University of Colorado – Denver
    • Chief Residency: University of Colorado - Denver
    • Scholarly interests: Leveraging clinical decision support tools to improve patient outcomes, lower respiratory tract infections and their role in asthma development
    Kristin (Kalita) Carter, MD, MSCS
    • PHM Fellowship Training Years: 2019-2021
    • Undergraduate: Loyola University - Chicago
    • Medical School: Loyola University Stritch School of Medicine
    • Pediatric Residency: University of Colorado – Denver
    • Scholarly Interests: Pediatric palliative care, care of medically complex children, global health, opioid prescribing practices, qualitative research
    Cristin Fritz, MD, MPH
    • PHM Fellowship Training Years: 2018-2020
    • Undergraduate: Washington and Lee University, 2006-2010
    • Medical School: Vanderbilt University School of Medicine, 2010-2015 (Combined MD and MPH program)
    • Pediatric Residency: Vanderbilt University Medical Center, 2015-2018
    • Scholarly Interests: Social Determinants of Health, Social risk screening and resource connection, Population Health, Quality Improvement
    Laura Zastoupil Lockwood, MD, Med
    • PHM Fellowship Training Years: 2017-2019
    • Undergraduate: University of Denver, BS in Biology
    • Medical School: Chicago Medical School at Rosalind Franklin University of Medicine and Science
    • Pediatric Residency: University of Colorado - Denver
    • Chief Residency: University of Colorado - Denver
    • Scholarly interests: Improving trainee medical education through curriculum development, personal and professional development of learners, and educational scholarship.
    Jillian Cotter, MD, MSCS
    • PHM Fellowship Training Years: 2017-2019
    • Undergraduate: University of Pennsylvania, BA in Biology and Economics
    • Medical School: Icahn School of Medicine at Mount Sinai 
    • Pediatric Residency: University of Colorado - Denver
    • Scholarly interests: Evaluating and improving the use of rapid diagnostic stool tests in diarrhea, specifically relating to Clostridium Difficile, Investigating the cost-effectiveness of commonly ordered interventions
    Justin Lockwood, MD, MSCS
    • PHM Fellowship Training Years: 2016-2018
    • Undergraduate: Michigan State University Lyman Briggs College
    • Medical School: Michigan State University College of Human Medicine
    • Pediatric Residency: University of Colorado - Denver 
    • Scholarly Interests: Health Outcomes Research; Quality Improvement; Care Escalation/Rapid Response Systems; Sepsis
    Kimberly O'Hara, MD
    • PHM Fellowship Training Years: 2015-2017
    • Undergraduate: Cornell University 
    • Medical School: Chicago Medical School at Rosalind Franklin University of Medicine and Science
    • Pediatric Residency: NewYork Presbyterian/Weill Cornell Medical Center
    • Chief Residency: NewYork Presbyterian/Weill Cornell Medical Center
    • Scholarly Interests: Medical Education including curriculum development and Faculty Development; High-Value Care; Qualitative Research 
    Sarah Luthy, MD, MSCS
    • PHM Fellowship Training Years: 2014-2016
    • Undergraduate: Amherst College
    • Medical School: University of Pittsburgh School of Medicine 
    • Pediatric Residency: University of Michigan Healthy System
    • Scholarly Interests: Palliative Care


    The University of Colorado Pediatric Hospital Medicine Fellowship program is designed for the motivated, self-directed learner who wants to develop a career based on excellence in scholarship, education, leadership, and clinical pediatric hospital medicine. To be considered for admission to our program, applicants must be in the process of completing training in (or completed) a 3-year ACGME-accredited Pediatric Residency program. We encourage applications from members of underrepresented minority groups to apply.

    Application Process

    ERAS Application Timeline

    Monday, May 31, 2024ERAS 2024 season ends at 5 p.m. ET.
    Wednesday, June 5, 2024ERAS 2025 season begins at 9 a.m. ET.
    Thursday, June 5, 2024EFDO will release tokens to fellowship applicants.
    Wednesday, July 3, 2024July cycle fellowship applicants may begin submitting applications to programs at 9 a.m. ET.
    Wednesday, July 17, 2024July cycle fellowship programs may begin reviewing applications at 9 a.m. ET.
    May 31, 2025    ERAS 2025 season ends at 5 p.m. ET.

    NRMP Fall Match Timeline

    Dates Activity
    Wednesday, August 31, 2023Match Opens 
    Wednesday, September 27, 2023Ranking Opens
    Wednesday, November 1, 2023Quota Change Deadline
    Wednesday, November 15, 2023Rank Order List Certification Deadline
    Wednesday, November 29, 2023MATCH DAY


    If you are interested in applying to our fellowship program, the application period will open on July 3, 2024 in alignment with dates provided by ERAS. Fellow selection is accomplished by participation in the National Residency Matching Program Match service, which occurs in late fall each year.

    Submitting Your Application 

    Our fellowship participates in the Electronic Residency Application Service (ERAS). Please submit your application through ERAS. Interview invitations will be offered on a rolling basis after July 17, 2024. Virtual interviews will be held from September 2024 through early November 2024. 

    While completing the ERAS online application, applicants should make certain to provide the following documents:

    • Current curriculum vitae
    • Personal Statement outlining the reasons for choosing this specialty and applicant’s career plans
    • At least three (3) but no more than five (5) letters of recommendation from physicians or mentors familiar with the applicant

    Please note that as an ACGME-accredited program, our fellows must have passed the USMLE Step 3 examination or COMLEX Level 3. Currently, we require non-US applicants to possess a valid certificate from Educational Commission for Foreign Medical Graduates (ECFMG). The ACGME now requires fellows to have completed pediatric residency training in a U.S. or Canadian ACGME-certified program prior to subspecialty fellowship training.

    For additional questions about our fellowship program, please contact the program at

    Diversity / Equity / Inclusion


    We are committed to creating a diverse environment for students, residents, fellows, and faculty. We believe that an environment of inclusiveness and respect promotes excellence and that a setting where diversity is valued leads to the training of physicians who are prepared to practice culturally effective medicine and meet the needs of the various populations we serve. Visit our Diversity, Equity, and Inclusion webpage for more....

    Well-Being / Resilience

    Be well

    By embracing wellness and improving personal resiliency, physicians can reconnect with the meaning of their work and fend off stress. Reducing or eliminating burnout also has practical implications for the entire department such as improving patient safety, student advancement, and the overall campus environment. 
    Visit our Pediatric Well-Being and Resilience website


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