Our Team

Meet the team of the Rural Medicine Program at Massachusetts General Hospital.

Leadership

Matthew Tobey, MD, MPH

Program Director
Faculty (2016-present)

Matt Tobey is an internal medicine physician from a rural town in Upstate New York who works in primary care and inpatient care in Rosebud, South Dakota. He founded and directs the Rural Medicine Program in the Mass General Department of Medicine and serves as the lead with partnerships with the Indian Health Service and the Sicangu Oyate. His interests include rural primary care, addiction medicine, and health care for individuals involved with the criminal legal system. In his spare time, he enjoys running, music, gardening, and time with his family and friends.

Stephanie Sun, MD, MS, MPH

Associate Program Director for Education
Director, Fellowship Program in Rural Health Leadership
Fellow (2018-2020), Faculty (2020-present)

Stephanie Sun is an Internal Medicine physician from a small town in Ontario, Canada. She graduated from McMaster University with a BSc in Biology with a Genetics Specialization and an MSc in Evolutionary Genetics and Bioinformatics. After a year assisting a medical mission in rural China and working with YWCA Canada supporting women fleeing situations of violence, Dr. Sun studied medicine in the Keith B. Taylor Global Scholars Programme of St. George's University. After training in England, Grenada and New York City, Dr. Sun completed residency at the Yale-Waterbury Internal Medicine Residency Program, where she was also chief resident. Dr. Sun completed the MGH Rural Health Leadership Fellowship in 2020, an MPH in Clinical Epidemiology at the Harvard T.H. Chan School of Public Health, and has been Director of the RHL Fellowship since 2021. Her interests are in graduate medical education, and point-of-care ultrasound. As a former varsity swimmer who competed at the Canadian 2008 Beijing Trials, she continues to enjoy time in the water and on land exploring new hikes and trails.

Core Faculty

Amina Chaudhry, MD, MPH, MBA

Faculty (2021-present)

Dr. Amina Chaudhry (she/her) is a general internist with over 20 years of clinical and community health experience. She has been providing clinical care at the Rosebud Service Unit since 2019 in the outpatient and inpatient settings. Dr. Chaudhry completed her residency in Internal Medicine/Primary Care at New York University and a general internal medicine fellowship at Johns Hopkins University, where her research focused on the integration of addiction treatment into HIV primary care. In recent years, she has developed a focus on digital health and ways it can be used to expand access to high quality care and enhance the care experience.

Jean Eller, MD

Faculty (2024-present)

Dr. Jean Eller is a longtime South Dakota physician who has worked with Avera McKennan, Sanford USD, and a dozen other health systems through her career. She is a longtime family medicine physician educator and is working to integrate USD student rotations into care in Rosebud.

Yun Li, MD, MBA

Fellow (2021-2023)
Faculty (2023-present)

Yun Li is originally from China and came to the US in 2007 to attend Hanover College. She obtained her MD and MBA degrees at Dartmouth, followed by completing an internal medicine residency at Cleveland Clinic. She is passionate about finding ways to achieve the best health outcomes on both individual and community levels. She has performed clinical duties in clinics and hospitals in nine states. She has served in several educational and committee initiatives to improve interprofessional care and the patient experience. During residency, she was appointed as an instructor with Lerner College of Medicine, where she provided teaching for a course in healthcare systems and service. Her research interest is understanding and improving rural health care delivery, especially as regards telemedicine innovations. In her spare time, she likes to explore hiking trails and browse map collections in the public library.

Greg Yungtum, MD, MA

Fellow (2022-2024)
Faculty (2024-present)

Dr. Greg Yungtum grew up on a farm in Sumner, Iowa, and went to college at the University of Notre Dame to study Sociocultural Anthropology. He earned his MA degree in Medical Anthropology at Harvard University and his MD degree at the University of Iowa. He completed his internal medicine residency at Brown University, where he focused on primary care and gained experience in addiction medicine and HIV clinics. He is interested in global and rural health development, with previous experience in rural Western Uganda studying barriers to treatment within HIV outreach programs. His academic and clinical interests include infectious diseases (especially HIV, HCV, and STI treatment), addiction medicine, food security and Native food sovereignty, the culture and structures of western medicine, and ethical photography in global health. Dr. Yungtum joined the RHL Fellowship in 2022.

Current Fellows

Zev Allen, MD, MPH, MBA

Fellow (2025-present)

Zev was raised on the family farm in Soldier, Kansas. He earned a Bachelor of Science in Life Sciences from Kansas State University. Following his undergraduate studies, Zev pursued a Medical Doctorate from the University of Kansas School of Medicine while concurrently earning a master's in public health from Dartmouth College. Subsequently, Dr. Allen was matched to a Family Medicine residency program through Indiana University at Ball Memorial Hospital. During his residency, Zev served as a Chief Resident and concurrently earned a master's in business administration from Kelley School of Business. With a strong foundation in both clinical medicine and healthcare systems, Dr. Allen hopes to pursue initiatives that drive equitable and affordable care across the healthcare landscape.

Victoria Kliewe, MD

Fellow (2025-present)

Dr. Victoria Kliewe grew up in Tarrytown, NY. She attended Cornell University, spending a semester on the Big Island of Hawaiʻi in a cultural immersion program. After graduating, she worked as a business process analyst at the New York Power Authority before becoming an assistant genetic counselor and applying to medical school.

At NYU Grossman Long Island School of Medicine, she conducted clinical research on health outcomes for COVID-19 patients receiving ECMO. Her journey at MGH includes transformative experiences at the Rosebud Hospital in South Dakota with the Lakota community and in Kotzebue, Alaska, serving the Iñupiat people above the Arctic Circle. She was also a fellow in the Public Voices Fellowship through the Department of General Internal Medicine’s Chapter of the OpEd Project, during which she authored two OpEds advocating for expanded healthcare initiatives for underserved communities.

Hema Pingali, MD

Fellow (2024-present)

Dr. Hema Pingali grew up in Alabama and went to college at the University of Richmond, where she received a BS in biology. She received her MD from Harvard Medical School and subsequently completed an internal medicine residency (primary care track) at Brigham and Women's Hospital. She is passionate about providing high quality primary care to rural settings. She is also interested in expanding home-based care in rural communities. She joined the Rural Health Leadership Fellowship in 2024.

Admin/Staff

Aislinn O'Keefe, MBA

Program Manager

Aislinn O’Keefe joined the Mass General Rural Medicine Programs in December 2020. A graduate of McGill University and Vanderbilt University, she has a long history of work linking teaching hospital teams to populations who have historically received limited health care, including work related to addiction and population health.

Eileen Kelley Sen

Sr. Project Coordinator

Eileen Kelley Sen joined MGH in February 2025 to support community-driven projects. She worked as a reports specialist with UNICEF in Jordan during the Syrian crisis, and as a senior donor relations officer with the UN Refugee Agency. She coordinated humanitarian assistance efforts in South and Southeast Asia with the U.S. State Department and supported Justice Department grant programs. She is a graduate of Cornell University.

Laura Ricci

Project Coordinator

Laura started working at MGH in April 2021, where she manages the Primary Care curriculum in the Internal Medicine Residency Program. In June 2024, she joined the Mass General Rural Medicine Program, coordinating rotations in Rosebud and overseeing the Rural Health Fellowship education.

Sara Purvis, MPH

Program Manager

Ms. Purvis received her MPH from Boston University focusing on maternal & child health, community-based research, and health care access. She assisted in the management of a community-based research program supporting the development of palliative care models for the Rosebud Sioux Tribe and neighboring communities. She joined the Rural Medicine Program in June 2023, serving as the Health Operations Specialist for the Rosebud Sioux Tribe Health Administration’s programs.

Affiliate Staff & Faculty

• David Baron, MD - Cambridge Health Alliance. Interests/specialties: internal medicine.
• Scott Biggerstaff, DO - University of Minnesota. Interests/specialties: pediatrics, internal medicine, point-of-care ultrasound, narrative medicine.
• Chantal Barksdale, MD, MSc - Mass General. Interests/specialties: internal medicine.
• Annie Brewster, MD - Mass General. Interests/specialties: internal medicine.
• Mark Eisenberg, MD - Mass General. Interests/specialties: addiction medicine, infectious disease.
• Max Fraden, MD - Hennepin County Medical Center. Interests/specialties: internal medicine, global health.
• Shahid Jaffer, MD - University of Minnesota. Interests/specialties: global health, quality improvement.
• Radhika Jain, MD - Mass General. Interests/specialties: internal medicine.
• Mira Kautzky, MD - Mass General. Interests/specialties: internal medicine.
• Bill Kormos, MD - Mass General. Interests/specialties: primary care, medical education.
• Hannah Lee, MD - University of Minnesota. Interests/specialties: internal medicine, pediatrics.
• Brett Lehner, MD - UMass. Interests/specialties: family medicine.
• Victor Lewis, MD - Mass General. Interests/specialties: internal medicine, carceral care.
• Siamak Malek, MD - Mass General. Interests/specialties: internal medicine.
• Jim Morrill, MD, PhD - Mass General. Interests/specialties: primary care, internal medicine, addiction medicine.
• Patrick O’Connor, MD - Hennepin County Medical Center. Interests/specialties: hospital care, the outdoors.
• Rebekah Rollston, MD - Cambridge Health Alliance. Interests/specialties: family medicine, addiction medicine.
• Stephen Selinksky, MD - University of Minnesota. Interests/specialties: internal medicine, pediatrics, tropical medicine, refugee medicine.
• Lisa Simon, MD, DMD - Brigham & Women’s. Interests/specialties: internal medicine, oral health integration.
• Kristen Sparagna, MD - University of Minnesota. Interests/specialties: internal medicine, pediatrics.
• Michael Sundberg, MD - University of Minnesota. Interests/specialties: internal medicine, pediatrics.
• Kathy Tran, MD - Mass General. Interests/specialties: internal medicine, medical journalism.
• Theodore Weatherwax, MD - Mass General. Interests/specialties: family medicine.
• Hannah Wenger, MD - Penn State. Interests/specialties: internal medicine.
• Katie Wilcox, MD - Hennepin County Medical Center. Interests/specialties: internal medicine.
• Donovan Williams, MD - University of Minnesota. Interests/specialties: internal medicine, health in rural and urban Native American populations.

Educational/Project Affiliate Faculty:

• Katrina Armstrong, MD - Columbia University. Internal medicine, CEO of Columbia Medical School, cancer care, health equity.
• Marcy Bolster, MD - Mass General. Rheumatology.
• BR Daubman, MD - Mass General. Global Health, bioethics.
• Kenneth Freedberg, MD - Mass General. Epidemiology, health policy.
• Jennifer Haas, MD - Mass General. Internal Medicine.
• Nicole Lurie, MD, MPH - Mass General. Research. Former Assistant HHS Secretary for Preparedness and Response.
• Suzanne Koven, MD, MFA - Mass General. MGH Writer in Residence.
• Josh Metlay, MD, PhD - Mass General. Chief, Division of General Internal Medicine.
• Leon Ptaszek, MD, PhD - Mass General. Cardiology, electrophysiology.
• Thomas Roberts, MD - Mass General. Oncology. Instructor in Medicine.