Our Professional Staff

Board Certified - ABPM (Occupational Medicine) Dr. Upham received her undergraduate degree form Brandeis University and then attended the University of Massachusetts Medical School. She completed the UMMS Fitchburg Family Practice Residency in1989 and worked as a Family Practitioner for several years. She then returned to UMMS where she completed a Masters in Public Health Program and the Occupational and Environmental Medicine Fellowship. She is board certified through the ABPM (Occupational Medicine). She completed training in acupuncture through Harvard Medical School. She has been practicing as an occupational medicine specialist since 1993 and has special interests in onsite services, medical surveillance, toxicology, reproductive hazards, indoor air quality, cumulative trauma disorders and education. She is a certified Medical Review Officer and a certified Commercial Driver Medical Examiner. She has been elected to the New England Collage of Occupational Medicine's Board of Directors and is the editor of the NECOEM newsletter, "The Reporter". She has lectured on a wide variety of occupational topics for groups including employees, employers, and other professional groups. In addition to providing direct patient care for injuries, she performs independent medical evaluations, permanent impairment ratings, and second opinions.

In addition to his work as a PA, he was a public school math and science teacher for 10 years and has six years of non-PA medical experience as both a kidney dialysis technician and an EMT on an ambulance. Bart's hobbies include kayaking, ballroom dancing, cycling, cross-country skiing, hiking, and meditation. As an occupational health provider, he delivers high-quality, patient-centered medical care while maintaining excellent communication with all involved parties and protecting each patient's medical and personal privacy.
PA DeCristoforo notes, "I honor the trust patients extend to me as their medical provider, work hard to keep that trust, appreciate that this is a true privilege, and that my role is in the service of the individual."


Ashley is gentle and soft spoken initially which allows her patients the time that they need to gain confidence and trust. Ashley uses many different techniques in her treatment but relies heavily on manual therapy to assist her patients in reaching their goals.
In her free time, you can find her with her dog Isla at the yoga studio or at CrossFit. Ashley is excited to join the Bayside team to assist all patients in meeting their maximum potential and return to doing the necessary tasks to return to work.
Our Administrative Team

Joy was born in Texas, joined the US Army in 1983 and stopped moving when she found her home Maine in 1996. She lives in the lovely little town of Harpswell where she enjoys being an empty nester and taking care of her 8 beautiful hydrangea gardens.
