Meet Your Provider

To view a video-bio of each provider, click on their photo.

Dr. James KorenDr. James Koren

Dr. Koren brings experience in advanced ‪‎laparoscopic‬ procedures including complicated hernias‬, colon resections, stomach ulcers‬ and a procedure for heartburn reflux‬. He received his doctorate from The Ohio State University and completed his surgical residency at Saint Elizabeth Medical Center in Youngstown, followed by a fellowship at Saint Peter’s University Hospital in New Brunswick, New Jersey.


Anne Thatcher, APRNAnne Thatcher, APRN

Anne Thatcher’s career has included serving patients in emergency medicine, occupational medicine and primary care. She earned her bachelor’s in nursing from Duquesne University in Pittsburgh, Pennsylvania and received her master’s from the University of New Hampshire, becoming a family nurse practitioner. She also serves as faculty for the UNH Graduate Nurse Practitioner Program.

Anne is a part of Speare Primary Care and her office is at our Boulder Point location.

Dr. Joseph EbnerDr. Joseph Ebner

Dr. Joseph Ebner brings a special interest in female urinary incontinence, menopausal issues, minimally invasive gynecologic surgery and obstetrics to Plymouth OB/GYN.  He received his undergraduate degree from the University of Notre Dame, Indiana, and his doctorate from the Medical College of Ohio.  Dr. Ebner completed his residency at Albany Medical Center, New York, and is board certified by the American Board of Obstetrics & Gynecology

Vanessa Hahn, APRNVanessa Hahn, APRN

Vanessa is certified as a Family Nurse Practitioner by the American Academy of Nurse Practitioners. She earned her bachelor’s in nursing from Chamberlain College of Nursing in Naperville, Ill., and holds a master’s from Massachusetts’s College of Pharmacy & Health Sciences University. Originally from Maine, Vanessa says she loves the outdoors. It was central New Hampshire’s natural environment that interested her in the position at Speare Primary Care.

Dr. Victor GennaroDr. Victor Gennaro

Dr. Gennaro is committed to providing central New Hampshire with comprehensive orthopedic care, close to home.  His special interests include the Total Join Replacement program, trauma, sports medicine and spine surgery.  He is a graduate of the Philadelphia College of Osteopathic Medicine in Philadelphia and completed his orthopedic surgical residency at Philadelphia’s Metropolitan Hospital, Central Division.  He is certified by the American Osteopathic Board of Orthopedic Surgery.

Dr. Linda Haller Dr. Linda Haller

Linda Haller, M.D., FACOG, joined Plymouth OB/GYN in 2013. Dr. Haller has lived and practiced in New Hampshire for 22 years. Completing her premedical degree work at California State University, she earned her doctorate from the University of California, Irvine, College of Medicine.

Dr. Mark BanisterDr. Mark Banister

Dr. Banister received his undergraduate degree from the University of Massachusetts in Boston and his doctorate from the University of Massachusetts School of Medicine in Worcester. He completed his residency, and was chief resident, at Albany Medical Center, New York.  Dr. Banister is board certified by the American Board of Obstetrics & Gynecology.

Britt McDonald, PA-C Britt McDonald, PA-C

Having worked as the internal medicine physician assistant at Tenney Mountain Internal Medicine,  Brittania McDonald received both her undergraduate and graduate degrees from Colorado State University.  She also received an MS PA from the University of New England College of Health Professions in Maine.  Ms. McDonald is certified by the National Commission on Certification of Physician Assistants.