John Moeller, MD, MHA, MS
Program Director, Emergency Medicine Residency
For Dr. Moeller, teaching has never been about the shift in front of him. It is about the physician a resident is becoming. He completed his residency at University of Connecticut, where he was named Chief Resident, before completing a fellowship in Emergency Ultrasound at UC Irvine. He joined Dartmouth-Hitchcock in 2019 as Associate Ultrasound Director and spent the next several years building the program’s point-of-care ultrasound curriculum as the Director of Ultrasound Education and Associate US Fellowship Director. He holds MS degrees in Healthcare Administration and Biomedical Sciences from Rosalind Franklin University. He has been core EM faculty since 2020, and became Associate Program Director in 2024.
Education and mentorship have shaped Dr. Moeller’s entire career in EM. He is known for bedside teaching, as well as direct and honest feedback. He also has a soft spot for gamification: he has coached medical student teams to podium finishes at national US competitions, built an annual Sonogames curriculum for the residency, and designed the EM Residency House curriculum to incentivize collaborative work in service, scholarship and EM community building. His passion for teaching and leadership has been recognized in multiple awards, although his proudest accomplishment is the mentorship he has provided to students, residents and fellows over the years.
As Program Director since 2026, Dr. Moeller leads with ambition that outpaces certainty — setting goals worth reaching for because that gap is where growth actually happens. He believes every resident deserves a training path built around them, with honest feedback along the way, and that building the structure and support that requires isn’t optional. It’s the job.
Dr. Moeller lives in the Upper Valley with his wife and children: Zealand, Emmy & Ellie (twin girls). He enjoys hiking, kayaking, gardening. He has an orchard of apples, pears, peaches, plums, cherries, apricots and nectarines - an ambitious list for New Hampshire’s growing season.
Andrew Thomson, MD
Associate Program Director, Emergency Medicine Residency
Andrew (“Dewey”) Thomson, MD, is Associate Program Director of the Dartmouth Hitchcock Medical Center Emergency Medicine Residency Program and Assistant Professor of Emergency Medicine at the Geisel School of Medicine at Dartmouth.
Dr. Thomson knows the residency from every perspective—resident, chief resident, fellow, faculty member, and now residency leadership. After completing both his Emergency Medicine residency and Emergency Ultrasound Fellowship at Dartmouth Hitchcock Medical Center, he chose to stay because of the people, culture, and commitment to learner growth that define the program.
Education and mentorship are at the center of Dr. Thomson’s career. He has held educational leadership roles across medical student, resident, and fellowship training and is passionate about helping learners grow into outstanding emergency physicians while finding career paths that align with their individual goals. During his time in undergraduate medical education, he launched Dartmouth’s Acute Care Medicine Clerkship, helping create the institution’s first new required clerkship in more than two decades. His academic interests include resident development, curriculum innovation, point-of-care ultrasound, and preparing future leaders in Emergency Medicine.
As Associate Program Director, Dr. Thomson enjoys working closely with residents to identify their strengths, explore career opportunities, and connect them with mentors who can help them succeed. Whether a resident is interested in academic medicine, community practice, fellowship training, ultrasound, administration, medical education, or quality improvement, he believes residency should provide the support, flexibility, and opportunities needed to build a fulfilling career.
Dr. Thomson and his wife, a Dartmouth-trained psychiatrist, live in the Upper Valley with their two sons. He believes the greatest strength of the Dartmouth Hitchcock Medical Center Emergency Medicine Residency is its people: a community where residents are known as individuals, challenged to reach their full potential, and supported by faculty who are deeply invested in their success both inside and outside of the emergency department.
Rachel Volk, MD
Assistant Program Director, Emergency Medicine Residency
Rachel Volk, MD, is Assistant Program Director of the Dartmouth Hitchcock Medical Center Emergency Medicine Residency Program and Assistant Professor of Emergency Medicine at the Geisel School of Medicine at Dartmouth.
Dr. Volk completed her Emergency Medicine residency at Duke University Hospital and joined Dartmouth Hitchcock Medical Center because of its commitment to clinical excellence, teamwork, and developing the next generation of emergency physicians. She is passionate about creating a residency environment where learners are challenged to grow while feeling supported throughout their training.
A focus on education and mentorship has shaped Dr. Volk’s career in Emergency Medicine. Her academic interests include graduate medical education, curriculum development, health equity, and understanding how social factors impact patients’ health and experiences with the healthcare system. She believes that excellent emergency physicians must be skilled clinicians who can adapt to different practice environments while providing compassionate, patient-centered care.
As Assistant Program Director, Dr. Volk works closely with residents to help them identify their strengths, build confidence, and achieve their professional goals. She is committed to ensuring that residents have a positive and meaningful training experience while graduating with the skills, judgment, and resilience needed to thrive in any emergency department.
Outside of medicine, Dr. Volk and her wife enjoy traveling, skiing, hiking, and exploring all that New England has to offer. She believes residency should be rigorous, supportive, and empowering—giving graduates the skills and confidence to thrive wherever their careers take them.
Judy Collins, C-TAGME
GME Senior Program Coordinator, Emergency Medicine Residency
Judy Collins joined the Dartmouth Hitchcock Medical Center family in 2007 as the simultaneous program coordinator for the Pulmonary, Infectious Disease, and GI Fellowship Programs. In 2011, Judy adopted a single program and became the Program Coordinator for the Emergency Medicine Residency. She brings with her 20 years of experience as a special education paraprofessional. She is the only Program Coordinator in Dartmouth Hitchcock Medical Center history to win the Program Coordinator of the Year award twice! When not working, she loves to spend time with her husband Roger and her dog on their picturesque farm in rural New Hampshire. One of her not-so-hidden talents in baking and, when the residents are lucky, she brings the fruits of her mad baking skills to work.