NH Dartmouth Family Medicine Residency - Faculty

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Meet Our Faculty

At NHDFMR our multidiscplinary faculty work together to provide excellent education and training for our residents. Our faculty includes 11 family physicians (seven of whom provide obstetrical care), pediatricians,  obstetricians/gynecologists, an internist, and several behavioral health faculty. Interested in learning more about our faculty? Check out the bios below.

Family Physicians

Doug Dreffer, MD

Program Director
Assistant Professor of Community and Family Medicine

Dr. Dreffer earned his medical degree at The Ohio State University College of Medicine and completed his residency at Concord Hospital. Since joining the NHDFMR faculty upon graduation in 2000, he served as a clinical faculty member, Associate Program Director, and Medical Director before assuming the post of Program Director. Committed to maximizing integration for the NHDFMR into the Concord Hospital system, Dr. Dreffer sits on the Governance Council of the Concord Hospital Medical Group and the Concord Hospital ACO Steering Committee. He currently serves as the Vice President of the NH Chapter of the AAFP. Clinically, Dr. Dreffer serves as Medical Director of a local nursing home and a residential facility for brain injured adults, and oversees the home visit program for the Hillsboro site. He is a three-time recipient of the Family Medicine Role Model Award as voted by the residents. His teaching interests include obstetrics, evidence-based medicine, and patient-centered medical home concepts.

J. Bryan Bannister, MD

Education Director
Adjunct Assistant Professor of Community and Family Medicine

Dr. Bannister received his medical degree from the University of Texas Medical Branch, Galveston in 1998. He completed his family medicine residency at the University of Rochester. Dr. Bannister joined the NHDFMR faculty in 2007 bringing with him six years of community health center experience. He oversees the inpatient medicine and night float rotations.

Teri Brehio, MD

Education Director
Adjunct Assistant Professor of Community and Family Medicine

Dr. Brehio joined the NHDFMR faculty in September 2004. She graduated from the University of Massachusetts Medical School and completed her residency at Concord Hospital, where she served as chief resident from 2003-2004. Dr. Brehio is an Education Director and the rotation coordinator for the orthopaedics/sports medicine and ICU curricula. She practices at our Hillsboro clinic. Her clinical interests include obstetrics, teen care, and preventive health.

Dominic Geffken, MD, MPH

Preventive Medicine Director
Assistant Professor of Community and Family Medicine
Assistant Professor at The Dartmouth Institute

Dr. Geffken joined the NHDFMR faculty in July 2004 as the director of leadership preventive medicine. He graduated from the University of Vermont College of Medicine. He completed both his family practice residency and preventive medicine residency at the University of Massachusetts-Worcester. He also received his Master of Public Health degree from the University of Massachusetts-Amherst. His interests include preventive medicine, quality improvement, behavioral health and geriatrics.

Cynthia King, MD

Adjunct Assistant Professor of Community and Family Medicine

Dr. King joined our faculty in 2006. Dr. King received her medical degree from University of Massachusetts in 2002 and trained at University of Rochester Family Medicine Residency Program. She had the opportunity to serve as chief resident from 2005-2006. Her interests include patient and resident education, international and migrant health and women's health.

A. John Orzano, MD, MPH

Adjunct Assistant Professor of Community and Family Medicine

Dr. Orzano joined our faculty in 2008. He received his medical degree from Georgetown in 1973. Upon completion of his family medicine residency at Hunterdon Medical Center, Dr. Orzano served as adjunct assistant director at Somerset Family Medicine Residency Program while maintaining a private medical practice. His residency responsibilities included directing faculty development and resident scholarly activities. In 1995, Dr. Orzano assumed a full time faculty position at Robert Wood Johnson Medical School to concentrate more on practice-based research activities. After completing a Post-Doctoral Fellowship in Primary Care Research and MPH degree, Dr. Orzano assumed various duties including principal investigator on NIH and foundation funded practice improvement projects. Dr. Orzano’s interest is in using his broad background to mentor residents and faculty to create and maintain evidenced-based, relationship-centered healing environments.

Gregory Thesing, MD

Concord Hospital Medical Staff President
Assistant Professor of Community and Family Medicine

Dr. Thesing joined the NHDFMR faculty in 1997 after spending two years as a staff physician at the United States Air Force Academy. Additionally, he was a clinical instructor in the Department of Family Medicine at the University of Colorado Health Services Center. Prior to his work in Colorado, he spent three years as staff family physician at Eielson Air Force Base in Alaska. Currently, he practices at the Family Health Center in Hillsboro. His teaching interests include outpatient procedures, precepting and obstetrics. He recently served as the Credentials Committee Chairperson and is currently President of the Concord Hospital Medical Staff.

Andy Valeras, DO, MPH

Dr. Valeras joined NHDFMR faculty in 2012 following completion of our combined family medicine/preventive medicine residency. He graduated from Arizona College of Osteopathic Medicine in 2007 and was excited to come back home to New Hampshire for residency training. Following family medicine training, Dr. Valeras entered Dartmouth-Hitchcock's Leadership Preventive Medicine Residency. He received his Master of Public Health in 2012 and his practicum focused on providing a PCMH in order to reduce avoidable Emergency Department utilization by Family Health Center patients. Dr. Valeras practices full spectrum family medicine and is the coordinator for both the Osteopathic and [Systems] curricula. Other clinical interests include obstetrics and in-office procedures as well as utilizing his LPMR training on continued quality improvement projects.

Angela Yerdon McLeod, DO

Assistant Professor of Community and Family Medicine

Dr. Yerdon received her osteopathic medical degree from the New York College of Osteopathic Medicine in 2001. Following her family medicine residency at Concord Hospital, she completed a fellowship in Women's Health at East Carolina University in Greenville, NC. She then returned to NHDFMR to join the faculty in 2005. Currently, Dr. Yerdon McLeod is the maternal child health coordinator and has successfully introduced Centering Pregnancy group visits into our clinic. Her clinical and research interests include family centered maternity and neonatal care, breastfeeding medicine, contraception management and postpartum mood disorders. In addition, her outpatient practice focuses on women's health including gynecological procedures and prevention of chronic disease.


David Conway, MD

Assistant Professor of Community and Family Medicine

Dr. Conway began his career as a registered nurse, working as a labor and delivery nurse from 1980 to 1982, before attending Albany Medical College. He completed his OB/GYN residency at Hartford Hospital in 1990. He worked in a large group private practice in Portland, Maine from 1990 to 1992, then in a rural solo practice in St. Marys, Pennsylvania from 1993 to 2001. Dr. Conway provides OB/GYN consultations for the family medicine faculty and residents in general obstetrics, gynecology and infertility as a member of the faculty.

Mary Danca, MD

Assistant Professor of Community and Family Medicine

Dr.Danca has been on the faculty since 2001, joining after 13 years in private practice Ob/Gyn. She provides consultations in obstetrics and gynecology and serves as an education director. Additionally, Dr. Danca coordinates the didactic curriculum and the Ophthalmology/ENT/Urology Rotation.

David Stevenson, MD

Adjunct Assistant Professor Department of Obstetrics and Gynecology

Doctor Stevenson joined the faculty in August, 2015. A Concord native, he graduated from the University of Vermont College of Medicine and completed his internship and residency in OB/GYN at Tripler Army Medical Center in 1991. He served in army hospitals in Nuremberg, Germany, and Denver, Colorado before returning to NH, where he practiced one year in North Conway before joining Concord OB/GYN in 1996. Colonel Stevenson continues to serve as the Chief of Aviation Medicine in the NH Army National Guard, with over 26 years active military service. Within the Family Medicine Residency, Dr. Stevenson oversees the surgery rotation, and provides obstetric and gynecologic consultation.

Annick Westbrook, MD

Adjunct Assistant Professor of Community and Family Medicine

Dr. Westbrook joined the NHDFMR faculty in July 2010. She graduated from Vanderbilt University School of Medicine and completed her Obstetrics and Gynecology residency also at Vanderbilt University where she served as Chief Resident in 1996-1997. Dr Westbrook works within the Family Health Center as an OB/GYN consultant and coordinator of the gynecology and procedures curricula. Her clinical interests include obstetrics, teen care, dysfunctional bleeding, and operative gynecology.


George (Skip) DeVito, MD

Assistant Professor of Community and Family Medicine
Adjunct Assistant Professor of Pediatrics

Dr. DeVito, Chair of Pediatrics at Concord Hospital, has worked in the community for the past 33 years. He became affiliated with the NHDFMR in 1995 and joined the Residency program as a full-time faculty member in 1999. Dr. DeVito oversees the pediatric outpatient curriculum. He leads the pediatric behavioral assessment clinic, supervises the educational well child clinic, and has developed a pediatric medical home clinic for complex pediatric patients. His teaching interests include neonatology, well child care, health care for special needs children and their families, and pediatric behavioral problems. Dr. DeVito's current research focuses on improving developmental screening in outpatient care. Dr. DeVito is two-time recipient of NH Magazine Top Doc Award in pediatrics. He was named NH Pediatrician of the Year by the NH Pediatric Society in 2007.

Matthew Piccone, DO

Dr. Piccone joined our faculty as a pediatric hospitalist in 2012. He graduated from the University of New England and completed his pediatric internship at National Capital Consortium, Bethesda Naval Hospital and Walter Reed Army Hospital. After his internship training, Dr. Piccone served as a General Medical Officer (GMO) with the United States Marine Corps for two years with a combat deployment to Fallujah, Iraq. Following GMO tour, he completed pediatric residency training at Dartmouth-Hitchcock Memorial Hospital, Children's Hospital at Dartmouth.Dr. Piccone served four years with the United States Navy as a General Pediatrician atNaval Hospital Camp Pendleton. He functioned as both an outpatient physician and inpatient hospitalist serving a diverse pediatric population with significant medical needs. As the the Chief Medical Officer for the pediatric ward, special care nursery, and newborn nursery, he was responsible for devising newborn and pediatric patient standard-of-care protocols. Dr. Piccone worked closely with the Family Medicine Residency Program and was awarded with the Family Medicine Residency Program Teaching Department of the Year (collaborative, 2008-2009) and as an individual, with the Family Medicine Intern Teacher of the Year (2011 – 2012). Dr. Piccone is excited to return to New England with his family.Dr. Piccone’swife, Kristen, is a pediatric occupational therapist and therapeutic riding instructor, and has two children, Lillian and Olivia.

Timothy Baba, MD

Sarah Radwan, MD


BJ Entwisle, MD

Assistant Professor of Community and Family Medicine

Dr. Entwisle trained in Primary Care Internal Medicine at Boston City Hospital. She entered group practice in 1988 in Concord where she pursued an interest in geriatrics. She obtained her Certificate of Added Qualification in geriatrics in 1994. She joined the NHDFMR part-time in 1995 to teach geriatrics, while continuing her primary care practice. In 1998, she became a full-time faculty member. Dr. Entwisle teaches all aspects of adult medicine. She has developed the program’s Frail Elder Program, which includes house calls, assisted living, and nursing home visits; these function as sites for geriatric teaching. She has been recognized for her outstanding geriatric teaching having received the Teacher of the Year Award three times.

Behavioral Health

Bill Gunn, PhD

Assistant Professor of Community and Family Medicine

Dr. Gunn, a licensed family psychologist, joined NHDFMR in 1997. He received his doctorate in family therapy from Virginia Polytechnical Institute and State University and has 25 years of experience teaching behavioral medicine at family medicine residencies in Virginia, Colorado and North Carolina. Dr. Gunn co-authored a book on models of collaboration between psychotherapists and physicians in 1996 and recently published another book on the same topic. He has collaborated with the physician faculty to create an innovative, longitudinal curriculum for residents. Dr. Gunn also works closely with organizational development at Concord Hospital to help train physicians as leaders in their communities.

Joni Haley, MS, LMFT

Ms. Haley, a licensed marriage and family therapist, joined NHDFMR in May 2000. She directs outpatient behavioral health services, which includes both mental health counseling and the integrated care management service. She also directs the behavioral health internship program at the Concord Hospital Family Health Centers. Ms. Haley supervises the masters-level and doctoral-level interns who are members of the NHDFMR interdisciplinary psychotherapy team. Ms. Haley is the behavioral health preceptor for the first, second and third-year Complex Continuity Clinics, and is involved in teaching during Systems weeks.

Tina Kenyon, ACSW

Instructor of Community and Family Medicine

Ms. Kenyon joined the NHDFMR faculty in 1995. As part of a team, she coaches residents through the process of completing longitudinal scholarly projects. Ms. Kenyon contributes to resident advising/support, didactic education, curriculum coordination, and medical student integration. She facilitates groups for faculty and residents to explore clinical uncertainty, and a resident Balint group. Ms. Kenyon enjoys promoting scholarly activity, including conference presentations and publications. Prior to her current role, she taught behavioral science at the Brown Family Medicine residency for several years. She possesses an extensive background in clinical family therapy, facilitation, and coaching. Her academic interests include curriculum design, transformational learning, organizational evolution and community-based research.

Alexandra Kuftinec, MD

Dr. Kuftinec completed a triple board residency at Tufts/Boston Floating Hospital/New England Medical Center in Pediatrics, Adult Psychiatry, and Child and Adolescent Psychiatry after graduating from University of Louisville School of Medicine in 1988. After working for 13 years in a community mental health center, she joined the Family Health Center in 2007. She provides psychiatric consultation for patients at the Family Health Center who have mental health issues and works with residents to manage their complex patients. She has an interest in, and commitment to, integrating the evaluation and treatment of mental health issues into the primary care setting.

Aimee Burke Valeras, PhD, LICSW

Dr. Valeras is Scholarly Activity Faculty at the NH Dartmouth Family Medicine Residency and Leadership Preventive Medicine Residency, and works in the Behavioral Health Department at the Family Health Center.  She received her undergraduate and Masters of Social Work degrees from Boston College and her Doctorate in Social Work from Arizona State University.  She has presented nationally and internationally on the topics of integrating behavioral health and primary care, on disability and illness identity, and on qualitative research methodology. Her interests include working with survivors of domestic violence, narrative research, and narrative medicine.

With FMR, Dr. Valeras serves as a resource to residents and faculty, in the areas of quantitative and qualitative methodologies, and improvement of measurement and data management skills.  With LPMR, she assists in resident coaching, program management, and practicum implementation and development. In her clinical role, she fulfills behavioral health curriculum, precepting, patient care responsibilities, and participates in research concerning these areas to recognize and treat mental illness in primary care setting.