York Hospital is excited to welcome the following providers to its medical staff this summer. The month of June marks the arrival of Courtney Grater, PA-C, in Plastic Surgery; Mary Samantha Jones, MD, to Emergency Care; Cynthia Lyle Stearns, MD, in Radiology; Meredith Ryan, NP, at York Family Practice and Shawnda Williams, FNP-C, in Walk-In Care.


Courtney Grater, PA-C, earned a BA in Biology at Bowdoin College in Brunswick, Maine, and an MS in physician assistant studies at the University of New England in Portland. In previous positions at South Shore Orthopedics in Hingham, MA, and Core Physicians in Exeter, NH, she assisted in hand surgery, sports medicine, shoulder reconstruction and orthopedic trauma. Grater currently assists Dr. Kimberly Marble at Core Physicians with plastic surgery procedures in the OR.


Mary Samantha Jones, MD, will be caring for patients in the Emergency Department. Dr. Jones arrives at York Hospital with experience as a Shock Trauma Platoon Surgeon at Camp Lejeune Naval Hospital in Jacksonville, NC, where she was also an Attending Physician in Emergency Medicine. Most recently, she held that same position at Balboa Naval Medical Center in San Diego, CA. Dr. Jones earned her BS at the University of Oklahoma, followed by an MD at Oklahoma University Health Sciences Center, graduating first in her class. She then completed residency in Emergency Medicine at Washington University School Medicine in St. Louis, MO, where she was Chief Resident. During any downtime, she enjoys oil painting and gardening, but will most likely be found with her husband as they chase two Scottish Terriers and try to keep up with their one-year old daughter. Dr. Jones is excited to make the Seacoast area their home for generations to come, while caring for community with the same support shown to her own family in the small Oklahoma town where she was raised.


Cynthia Lyle Stearns, MD, the newest member of the radiology team, earned her BS and MS at Pennsylvania State University in State College, PA, and MD from Dartmouth Medical School in Lebanon, NH. Dr. Stearns completed her internship in internal medicine at Kaiser Foundation Hospital in Oakland, CA, and residency in radiology at Mount Auburn Hospital in Cambridge, MA. The latter was followed by a fellowship in Pediatric Radiology at Children’s Hospital, Boston, MA where she was chief fellow. Her radiology experience includes positions at Spectrum Medical Group in Portland, Maine, Access Radiology/Radiology Partners to St. Jude Children’s Research Hospital in Boston, MA. Dr. Stearns is a native of New Hampshire, and currently resides in Cape Elizabeth, ME, where she enjoys outdoor activities with her daughter and two dogs.


Meredith Ryan, APRN, FNP-C, is now caring for patients at York Family Practice. However, she has been providing nursing care to York Hospital inpatients on the medical/surgical team and in the ASU/PACU in the Surgery Center for almost 10 years after receiving her BSN from the University of Vermont. Ryan continued her education at Rivier University, in Nashua, NH, recently earning an MS in Nursing, Family Nurse Practitioner. Her clinical rotations included York Family Practice, Family Practice of Sanford and York Hospital, where she provided care for patients of all ages, from newborns to older adults. When away from York Family Practice, you can find her hiking, running or snowboarding or relaxing reading and practicing yoga.


Shawnda Williams, FNP-C, earned both her BSW and BSN from the University of Southern Maine in Portland, and most recently her MSN, Family Nurse Practitioner degree, from Purdue Global University. She also has longevity as a caregiver at York Hospital. After many years as a Children’s Services Caseworker/LCW for the State of Maine Department of Human Services for York/Cumberland Counties, Williams earned her BSN. She then joined the nursing team as an RN in York Hospital’s Intensive Care Unit, followed by a position with Walk-In Care services. She now returns as a family nurse practitioner, excited to use her education, nursing and social work experience, along with seasoned clinical judgment to care for patients at York Hospital’s Walk-In Care community locations.


For more information about these newest members of the York Hospital medical staff, call York Hospital at 207-351-2273. For further details about other York Hospital providers and services, visit or contact Community Relations at 207 351-2385 or [email protected].