Meet Our Faculty

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

Family Physicians

Dominic Geffken, MD, MPH, FAAFP

Program Director, Assistant Professor of Community and Family Medicine, & Assistant Professor at The Dartmouth Institute

Dr. Geffken jointed the NHDFMR faculty in July 2004 as the director of leadership preventative medicine. He graduated from the University of Vermont College of Medicine. He completed both his family medicine residency and preventative 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 preventative medicine, quality improvement, behavioral health, geriatrics, addiction medicine and providing health care to homeless populations.

Bryan Bannister, MD
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.

Teri Brehio, MD
Adjunct Assistant Professor of Community and Family Medicine

Dr. Brehio joined the NHDFMR faculty in 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. She served as Education Director from 2011-2019. Dr. Brehio coordinates the orthopedics, sports medicine and ICU curricula. She practices in the Hillsboro clinic site, in the town where she grew up. Her clinical interests include Obstetrics, Dermatology procedures, preventive health and teaching.

Cynthia King, MD
Adjunct Assistant Professor of Community and Family Medicine

Dr. King joined out faculty in 2006. Dr. King received her medical degree from the University of Massachusetts in 2002 and trained at the 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.

Beth Koester, MD
Medical Director

Dr. Koester has been the Medical Director of the NHDFMR since 2017. She completed her medical school training in 1995 at the University of Massachusetts Medical School in Worcester, MA. Her Family Medicine residency training took place in Marquette, MI and she then went on to general practice, first as an employed physician and then in solo private practice, in Maine. In 2010, she transitioned to working as a hospitalist in Maine and then Massachusetts before switching back to outpatient practice at NHDFMR in 2017.

During this time Dr. Koester also held many leadership positions and earned a Master in Medical Management from Carnegie Mellon University in 2014. Her most recent honor was obtaining the designation of a Certified Physician Executive from the American Association for Physician Leadership in 2018.

When not working on maintaining and improving the patient care delivered by the Family Health Center in Concord and Hillsboro/Deering, Dr. Koester greatly enjoys the pleasures of living in rural New Hampshire.

Angela Yerdon McLeod, DO

Assistant Professor of Community and Family Medicine

Dr. Angela Yerdon McLeod received her medical degree from the New York College of Osteopathic Medicine in 2001. Following her residency at NH Dartmouth FMR, she completed a fellowship in Women's Health at East Carolina University in Greenville, NC. She then returned to NHDFMR to join faculty in 2005 as the Maternal Child Health education leader. Her clinical and research interests include family-centered maternity and neonatal care, breastfeeding medicine, neonatal abstinence syndrome, contraception management and postpartum mood disorders. She has years of experience with the Centering Pregnancy prenatal group visits model. When she is not busy catching babies or caring for them, she can be found chasing her own two girls or running, kayaking, mountain biking or hiking in the NH or Maine mountains.

Andy Valeras, DO, MPH, FAAFP

Associate Program Director of LPMR

Dr. Valeras joined faculty in 2012 following completion of the NH Dartmouth Family Medicine Residency and Dartmouth Hitchcock Leadership Preventative Medicine Residency (LPMR). Dr. Valeras currently serves as an Associate Program Director for LPMR. He is a designated American Academy of Family Physicians Fellow. Dr. Valeras currently seeks to integrate quality improvement and systems-based thinking with the clinical practice and education of family medicine providers in integrated teams. Dr. Valeras does this through the [Systems] course, taught via 320 hours of longitudinal experiential learning, over three years for primary care teams. Dr. Valeras serves as President of the Board of Directors for the Collaborative Family Health care Association.

Gregory Thesing, MD

Assistant Professor of Community and Family Medicine

Dr. Thesing jointed the NHDFMR in 1997 after spending two years as a staff physician at the United State 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 a staff family physician at Eielson Air Force Base in Alaska. Currently, he practices at the Family Health Center in Hillsboro. He was past chair of the Concord Hospital Credentials Committee as well the Medical Staff President. He is a member of several hospital committees. His teaching interests include outpatient procedures, chronic care management, and working in multidisciplinary primary care teams.

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 Fellowing 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.


David Stevenson, MD

Adjunct Assistant Professor Department of Obstetrics and Gynecology

Doctor Stevenson joined the faculty in 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 of active military service. Within the Family Medicine Residency, Dr. Stevenson oversees the surgery rotation and provides obstetric and gynecologic consultation.

Linda J. Haller, MD

Dr. Haller joined NHDFMR in November of 2016 as a faculty in obstetrics and gynecology. She has worked and lived in NH for almost 30 years as an OBGYN, with brief interludes of working in Nepal and New Zealand. She received her Medical Degree from the University of California, Irvine in 1986 and has previously worked in northern NH. Interests in medicine are obstetrics, menopause, and mindfulness meditation. She was recently certified to teach mindfulness meditation. Her outside interests include cats, being in nature, traveling and meditation.

Annick Westbrook, MD

Adjunct Assistant Professor of Community and Family Medicine

Dr. Westbrook joined the NHDFMR faculty in 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.


Sarah Radwan, MD


Mary Kae Eckert, MD

Dr. Eckert joined the NHDFMR residency faculty in July 2019. She is a faculty provider of the Frail Elder program with a focus on Geriatric and Palliative Medicine. She graduated from the Perelman School of Medicine at the University of Pennsylvania in 1997, and completed internal medicine residency at Maine Medical Center where she was co-chief in her fourth year of training; then practiced hospitalist and palliative/hospice medicine in Austin, TX and Concord, NH. She is board-certified in Internal Medicine and Palliative and Hospice Medicine. Dr. Eckert enjoys treating the 'whole patient,' teaching residents, serving the local community through interdisciplinary team-based health care, and has special interest in improving transitions of care.

Behavioral Health

Alex Brown, PhD

Dr. Brown is a licensed physiologist and coordinator of the Behavioral Science curriculum at NH Dartmouth Family Medicine Residency including clinical education and observation, behavioral precepting, resident wellness, and biomedical ethics. Dr. Brown received his doctorate in Counseling Psychology and completed a postdoctoral fellowship in Primary Care Behavioral Health jointly at the Edith Nourse Rogers Memorial VAMC in Bedford, MA, and care psychologist at Cambridge Health Alliance/Harvard Medical School and Tufts Family Medicine Residency. His clinical focus is health psycho-physiological effects of anxiety and depression, and he supervises doctoral-level psychology trainees in the behavioral health internship program at the Family Health Center.

Joni Haley, MS, LMFT

Ms. Haley, a licensed marriage and family therapist and American Association for Marriage and Family Therapy Approved Supervisor, jointed NHDFMR in May 2000. She directs outpatient behavioral health services, which includes both mental health counseling and integrated care management service. She also directs the interdisciplinary behavioral health internship program at the Concord Hospital Family Health Center. Ms. Haley is one of the clinical supervisors for masters-level and doctoral-level behavioral health interns. Ms. Haley is one of the behavioral health preceptors for the first and second-year resident complex continuity clinics and is involved in teaching during "systems" weeks. She also provided direct observation and feedback for residents during their continuity clinics. She is a member of the Family Health Center leadership team and facilitated Concord Hospital Schwartz Center Rounds.

Tina Kenyon, ACSW

Instructor, Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth

Ms. Kenyon joined the NH Dartmouth Family Medicine Residency as a faculty in 1995. Her responsibilities include resident and medical student education, curriculum development, advising and coaching. She facilitates a group for residents to explore clinical uncertainty. She coordinates the Resident's Program Evaluation Committee. Ms. Kenyon has contributed to the skill development of faculty, primary care residents and other health care professionals in a variety of content areas for 30 years. Her background also includes health care social work, family therapy practice, organizational development, process improvement, facilitation and medication. She has numerous publications and has presented on a variety of topics at regional, nation and international conferences. 

Alexandra Kuftinec, MD

Dr. Kuftinec completed a triple board residency in Pediatrics, Adults Psychiatry, and Child and Adolescent Psychiatry at Tufts/ Boston Floating Hospital/ New England Medical Center after graduation from the University of Louisville School of Medicine in 1988. She worked for 10 years in a community mental health center, after which she joined the faculty of the NH Dartmouth Family Medicine Residency program in 2007. There she provides psychiatric consultation for patients at the Family Health Center who have behavioral and mental health issues. She works with residents and faculty to manage their complex patients and has an interest in, and a commitment to, integrating the assessment and treatment of mental health issue 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 Preventative 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 withing with survivors of domestic violence, narrative research, and narrative medicine.

With FMR, Dr. Valeras serves as a resource to residents, faculty, and staff in the areas of quality improvement and quantitative measurement, as well as proposing, presenting, or publishing their work. With LPMR, she assists in resident coaching, practicum implementation and program development. In her clinical role, she fulfills preceptive and patient care responsibilities.