Our Physicians & Medical Staff

While here in our office, you may need to meet with several of staff members, and we want to make sure that you are comfortable in knowing who you are seeing and why. We explain the different medical credentials to help you understand the differences between an MD and a DO (both are physicians) and a Nurse Practitioner (ARNP) and a PA (physician’s assistant).

Marni Nicholas, MD

Academic Degree
M.D., University of Rochester Medical Center, Rochester, NY

Postdoctoral Training
Internal Medicine Residency, St. Vincent’s Medical Center, NY
Chief Resident in Internal Medicine, St. Vincent’s Medical Center, NY

Specialty Board Certification
Board Certified, American Board of Internal Medicine

Daniel L. Davies, DO

Academic Degree
D.O., University of New England, Biddeford, ME

Postdoctoral Training
Internal Medicine Residency, University of Connecticut, Farmington, CT

Specialty Board Certification
Board Certified, American Board of Internal Medicine

KelliSue Friedman, PA-C, MA

Academic Degree
B.S., S.U.N.Y. at Brockport, NY
B.S., S.U.N.Y. at Stonybrook, NY
M.A., University of Maryland, College Park

Previous Professional Experience
Exercise Physiologist

Board Certification
Board Certified, NCCPA

Michele Guilfoyle, PA-C

Academic Degree
B.S., University of New Hampshire, Durham, NH
M.S., University of New England, Maine

Professional Experience
Registered Dietician

Board Certification
Board Certified, NCCPA

Dorothy McGrath, PA-C

Academic Degree
B.A., Wheaton College, Norton, MA
M.S., Northeastern University, Boston, MA

Previous Professional Experience
Cardiac Surgery - Physician Assistant
Cardiothoracic Surgery - Physician Assistant
Family Practice - Medical Assistant

Board Certification
Board Certified, NCCPA

Jennifer Cogan, MS, LCMHC

Academic Degree
BA, Boston University, Boston, MA
MS, Salem State College, Salem, MA


Beacon Rheumatology

Brian Bowers, DO

Academic Degree
D.O., New York College of Osteopathic Medicine
B.S., State University of New York at Stony Brook

Postdoctoral Training
Rheumatology Fellowship: Stony Brook University Medical Center
Geriatric Medicine Fellowship: Stony Brook University Medical Center
Internal Medicine Residency: Stony Brook University Medical Center

Specialty Board Certification
Board Certified, Rheumatology, Geriatric Medicine, Internal Medicine

Hospital
Affiliation