Our practice is currently accepting new patients

100 Hospital Road, Suite 4
Leominster, MA 01453
(978) 514 6300
Michelle Margolis, M.S.N., F.N.P.
Michelle obtained her Bachelors from Northeastern University in Boston, MA and Masters of Science in Nursing from the University of Massachusetts in Worcester, MA. Michelle is certified as a family nurse practitioner through the American Nurses Credentialing Center (ANCC). Michelle enjoys working in primary care and has a particular interest in adolescent medicine, child development, and nutrition. 

Michelle lives in Boston and enjoys running, hiking, cooking, and baking. 

Lynne J. Monfreda, M.S.N., C.P.N.P.
Lynne obtained her Bachelors from Fitchburg State College, her Masters in Science from Anna Maria College and her Masters of Science in Nursing from the University of Massachusetts. She is certified in pediatrics through the American Nurses' Credentialing Center. Lynne's interests include nutrition, child development and urgent care. 

Lynne lives with her husband in Hubbardston, MA. Her interests include reading,  hiking, biking, traveling and spending time with her family.

​Dianna Queheillalt, M.S.N., C.P.N.P., AE-C
Dianna obtained her Bachelor’s and Master’s in Nursing from the MGH Institute of Health Professions in Boston. She is certified in pediatric primary care (CPNP) through the Pediatric Nursing Certification Board, and as a Certified Asthma Educator (AE-C) through the National Asthma Educator Certification Board. Dianna’s clinical interests include the management of asthma and allergies, and all things gastrointestinal, particularly eosinophilic esophagitis and chronic constipation. 

Dianna lives in Lexington with her husband and son. She enjoys reading, running, photography, traveling with her family, and banding birds at Plum Island. 

​Lisa Staiti, M.S.N., C.P.N.P.
Lisa obtained her Bachelors of Science from Western New England College in Springfield MA, her Bachelors of Science in Nursing and Masters of Science in Nursing from Regis College in Weston MA. She is certified in pediatrics through the Pediatric Nursing Certification Board (PNCB). Lisa enjoys all aspects of primary care: from care of the newborn to adolescents. Her clinical interests include child development, asthma management, and adolescent medicine. 

Lisa lives in Rutland MA. With her husband and three children. She enjoys playing soccer, golf, photography and scrapbooking.  

Tammy K. Zaruba, M.S.N., C.P.N.P.
Tammy obtained her Bachelors and her Masters of Science in Nursing from Regis College. She is certified in pediatrics through the National Certification Board of Pediatric Nurse Practitioners and Nurses. Tammy is a member of the National Academy of Pediatric Nurse Associates and Practitioners. She enjoys working with children and their parents in the primary care setting and is particularly interested in newborn care, breast feeding and child development.

Our Nurse Practitioners
Medical Associates Pediatrics