Lauren DiMarino, DO
Program Director
Dr. DiMarino earned her medical degree from Lake Erie College of Osteopathic Medicine. She completed her residency at Geisinger Medical Center, where she served as Chief Resident for the Internal Medicine program. She then became Associate Program Director and was appointed Program Director of the Internal Medicine Residency in 2016.
Dr. DiMarino is an Associate in Hospital Medicine and a Fellow of both the American College of Osteopathic Internists and the American College of Physicians. She holds academic positions as Associate Professor of Medicine at Geisinger College of Health Sciences and Philadelphia College of Osteopathic Medicine. She is a Distinguished Member of the Geisinger College of Health Sciences Academy of Educators, recognized for her excellence in teaching, assessment, curriculum design, educational leadership, mentoring, and educational scholarship.
Passionate about mentorship and learner transitions, Dr. DiMarino is an elected member of the Alliance for Academic Internal Medicine (AAIM) Association of Program Directors in Internal Medicine (APDIM) Council and represents AAIM on the American College of Physicians (ACP) Education Committee. She has contributed to several AAIM task forces and workgroups, including the Learner Handoff Standards Task Force, Individualized Learning Plan Task Force, GME-GME ILP Workgroup, and serves as Co-Chair of the Residency Application Process Interview Optimization Subgroup.
Jodie Reider, MD
Associate Program Director
Director, Clinician Educator Track
Dr. Reider received her Doctor of Medicine degree at the University of Pittsburgh in 2002. She remained at the University of Pittsburgh Medical Center for the next 14 years, during which time she completed her residency in Internal Medicine and fellowship in Endocrinology, served as Chief Medical Resident, and worked as a Clinical Assistant Professor in the Division of Endocrinology before joining Geisinger in 2016. She has been an Associate Program Director for the Internal Medicine Residency Program since 2016. Her educational interests include teaching, mentorship, coaching, and faculty development. She completed Geisinger’s Medical Education Certificate Course in 2019. She is Director of the Clinician Educator Track and Director of the Clinical Competency Committee. She organizes our annual resident retreats and serves as the mentor for approximately 17 residents/year.
Dan Dometita, DO
Associate Program Director
Director, Osteopathic Recognition
Dr. Dometita received his medical degree in 2012 at Edward Via College of Osteopathic Medicine in Virginia. He completed his medical residency training and served as a Chief Resident at Geisinger Medical Center. Following, he took the role of Director of Osteopathic Recognition and then subsequently was appointed as Associate Program Director in 2018. He is an Associate in Hospital Medicine and General Internal Medicine where he also serves as the Director of Residency Clinic. Dr. Dometita is a Fellow of of the American College of Physicians and also holds academic positions as Clinical Assistant Professor for Geisinger Commonwealth School of Medicine and Philadelphia College of Osteopathic Medicine. He is an alumni of Geisinger's Medical Education Certificate Course, and is a member of the Geisinger Academy of Educators. Outside the office, he is an avid Eagles fan and loves doing outdoor activities with his wife, Crystal, and three children, Braeden, Arabella, and Eris.
Jamie Hood, DO
Associate Program Director
Dr. Hood received her Doctor of Medicine degree at Philadelphia College of Osteopathic Medicine. She completed residency training at Geisinger Medical Center and then stayed on as Chief Resident for the Internal Medicine residency program for the 2019-2020 academic year. She was subsequently appointed an Associate Program Director in 2021. She is an Associate in Hospital Medicine and serves as Medical Director for one of the medical-surgical units. She is working to redesign the board review curriculum and offer ongoing faculty development for the Hospital Medicine core educational faculty. Outside of work, Dr. Hood is an aspiring amateur sommelier, avid reader, and enjoys spending time with her husband and their cats.
Lisa Schroeder, MD
Assistant Program Director
Dr. Schroeder received her Doctor of Medicine degree at the University of Wisconsin School of Medicine and Public Health at Madison in 2007. She completed her residency and chief residency in Internal Medicine and fellowship in Rheumatology at Geisinger. She serves as an Assistant Professor in the Department of Rheumatology, as well as an Assistant Program Director for the Internal Medicine Residency program. Dr. Schroeder develops and delivers clinical reasoning curricula for both the Internal Medicine Residency and graduate medical education at Geisinger. She is also core faculty for Geisinger’s Healthcare Communications program. She previously served as Internal Medicine Clerkship and Sub-internship Director from 2016-2020. Her educational interests include mentoring residents, medical students and rheumatology fellows, specifically around clinical reasoning and communication skills. She completed Geisinger’s Medical Education Certificate Course and is a member of the Geisinger Academy of Educators. She enjoys reading, exercising, cooking and spending time with her family.
Stefanie Leader, DO
Director, Quality Improvement and Wellness
Dr. Leader received her Doctor of Osteopathic Medicine degree at the Philadelphia College of Osteopathic Medicine in 2015. She completed her Internal Medicine Residency training at Geisinger Medical Center. She was then selected as Chief Resident for the 2018-2019 academic year. She is currently an Associate in Hospital Medicine spending most of her clinical time teaching residents while on their inpatient Internal Medicine rotation. She serves as the Director for Quality Improvement for the Internal Medicine residency and is a member of the EQUIPS (Educators for Quality Improvement and Patient Safety) Steering Committee for the Geisinger system. She also serves as the Director of Wellness for the residency and represents the Internal Medicine Residency as the acting Well-Being Champion for the Geisinger Graduate Medical Education Well-Being Committee. In addition, she holds academic positions as Clinical Assistant Professor for Geisinger Commonwealth School of Medicine and Philadelphia College of Osteopathic Medicine. She is an alumni of Geisinger’s Medical Education Certificate Course, ILEEd (Improving the Learning Environment for Educators) course and is a member of the Geisinger Academy of Educators. Outside of the hospital, she enjoys road-tripping throughout the North-East with her two daughters Amelia and Avery, international travel, a variety of fitness activities, and amateur home improvement projects.
Jonathan Swinden, MD
Director, Simulation
Dr. Swinden received his Doctor of Medicine degree from St George’s University. He completed Internal Medicine residency at Geisinger Medical Center then served as Chief Resident. He is an Associate in Hospital Medicine and has a passion for teaching. He directs the clinical simulation curriculum for the Internal Medicine residency and is a core faculty member for the Geisinger Healthcare Communications Program. His professional interests include prevention of diagnostic errors and raising awareness of cognitive bias.
Denise Keyser
Program Manager
Ms. Keyser graduated from Bloomsburg High School and Allentown Business School with an Associate
in Specialized Business degree. She started at Geisinger in 1989 as a float secretary. In 1994, she became the program administrator for the Internal Medicine Residency Program. Ms. Keyser is the
“rock” of the program, making sure each trainee successfully completes the training requirements during their three years with the program. She tells everyone that this is her “second family.”
Suzanne Noll, MEd
Program Administrator
Suzanne graduated from Bloomsburg University with a Bachelor of Arts in Communication Studies and Organizational Communication in 2017. She went on to complete her Master of Educational Leadership and College Student Affairs in 2019 also from Bloomsburg University. In 2019, Suzanne worked at Penn State Mont Alto within the Residence Life program. Suzanne entered the Geisinger system in September 2021 working in the Staffing Office then transitioning to Same Day Surgery. In October 2022, Suzanne became a Program Administrator for the Internal Medicine/Clinical Informatics. Suzanne enjoys cooking, baking, reading (loves a good murder mystery), and spending time with her family and cats.
Jacob Gries, MD
Chief Resident
I was born and raised in rural Oregon and bounced around for my education. Gonzaga University in Washington gave me my undergraduate education, Kansas City University my master’s in biomedical sciences, and St George’s University in Grenada my medical education. After so many transitions, I needed a residency that offered a collegial and community-forward atmosphere that reminded me of home, which I graciously found in Geisinger.
Geisinger provided me a home to optimize my personal and professional growth into an upstanding holistic human and physician. The solid interpersonal relationships Geisinger allowed me to form with residents, staff, attendings, and students will carry on well beyond my tenure as a resident into my chief year and future career.
I look forward to offering the same support and guidance to my resident-peers as chief. As a leadership team, we look forward to welcoming you into the Geisinger family and helping you flourish into exceptional physicians and outstanding human beings.
Kamran Namjouyan, DO
Chief Resident
As a recent immigrant, I've eagerly pursued avenues to realize my dream of becoming a Physician. During my rotation as a medical student at Geisinger, it became abundantly clear that this institution is not only dedicated to honing my skills as a physician but also to unlocking my full potential.
Geisinger has provided me with the resources and support necessary to excel both in patient care and as a leader within the hospital and my community. The seamless transition facilitated by Geisinger has opened doors to a future I never imagined possible.
In addition to my medical journey, Central Pennsylvania has offered me the perfect backdrop to indulge in my outdoor passions, such as fishing, boating, and skiing. A fun tidbit about me: I'm also a personal trainer and prioritize maintaining a healthy lifestyle.