Dang Nguyen, PA-C

[Walk-In Care] Dang Nguyen received his Bachelor of Science degree in Human Physiology and his Master of Science in Applied Anatomy/Physiology from Boston University, Boston, MA. He received his Master in Physician Assistant Studies from Massachusetts College of Pharmacy and Health Sciences (MCPHS). Dang brings many years of experience in family practice and urgent care settings.…

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Joyce Aliseo, APRN, FNP

[Londonderry Office] Joyce Aliseo is a family nurse practitioner at DMC’s Londonderry practice. She received her Associate of Science, Bachelor of Science, and Master of Science degrees in Nursing from Rivier University, Nashua NH. She also has an Associate degree in Accounting from Bentley University, Waltham, MA.  Over the course of her career, Joyce has…

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Sarah Wheeler, FNP

[Bedford and  Raymond Offices] Sarah Wheeler (formerly Matson) is a family nurse practitioner in DMC’s Derry and Raymond practices. She graduated Cum Laude from Saint Anselm College in Manchester, NH with a BA in nursing and from University of New Hampshire, Durham as an FNP.     loading… Question Rating Breakdown loading… Distribution loading… Comments…

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Ajay Koshy, MD

[Bedford and Goffstown Offices] Dr. Koshy is Board Certified in Family Medicine by the American Academy of Family Practice. He completed his undergraduate degree at Villanova University and his medical degree at Medical College of Pennsylvania. He completed his residency at Williamsport Hospital, also in Pennsylvania. Dr. Koshy has been practicing in the greater Manchester…

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Katharine L. Wetherbee, DO

[Londonderry Office] Dr. Wetherbee received her Doctor of Osteopathic Medicine from the University of New England (UNE) in Biddeford, Maine, followed by a residency at the Fort Collins Family Medicine Program in Fort Collins, Colorado, where she served as an Obstetrics Chief and a Pediatric Liaison. She is Board certified by the American Board of…

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Margaret Donovan, DNP, APRN, FNP-C

[Derry Office] Margaret Donovan is a board-certified Family Nurse Practitioner and the Clinical Director at DMC. She received her Doctor of Nursing Practice (DNP) and Master of Science in Nursing degrees from the University of Massachusetts Medical School. She has a Bachelor of Science in Nutritional Sciences from the University of New Hampshire. As Clinical…

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Dr. Dreffer

Doug Dreffer, MD

[Concord Office] Dr. Dreffer received a Bachelor of Arts degree from Williams College in Williamstown, MA, and his Doctor of Medicine degree from The Ohio State University College of Medicine in Columbus, Ohio. He has been a Family Practice provider since 1997 and was the medical director and then program director for the NH Dartmouth…

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Steve Hilton, DO

[Bedford Office] Dr. Hilton received a Bachelor of Science degree in Interdisciplinary Engineering from Purdue University in West Lafayette, Indiana, and a Doctor of Osteopathic Medicine from A.T. Still University in Kirksville, Missouri. He enjoys treating patients of all ages, from newborns to centenarians and looks forward to building lasting bonds with his patients and…

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Jacob Donovan, PA-C

[Derry Office] Jacob received his Bachelor of Science degree in Medical Studies from DeSales University in Center Valley, Pennsylvania, followed by his Master of Physician Assistant Studies (MSPAS), also at DeSales. He grew up in Deerfield, New Hampshire and is so appreciative of the opportunity to practice in his home state, caring for patients in the…

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