Mark Mark G. Gilchrist, MD, FAAP

Dr. Mark is a graduate of Chelmsford High School. He graduated with honors from the University of Miami and received his MD from Loyola University Chicago Stritch School of Medicine. He completed his pediatric residency at Arnold Palmer Hospital for Women and Children in Orlando, Florida. Currently, he has served as Chief of Pediatrics at Lowell General Hospital. Dr. Mark is the medical adviser for The Paul Center in Chelmsford, as well as the Greater Lowell Family YMCA. He currently serves as the vice chair of the Board of Directors of the Lowell General Physician Hospital Organization. He has also served as chairman of the Board of Directors of The Boys and Girls Club of Greater Lowell.


Lisa M. Sevigny, MD, FAAP

Dr. Lisa Sevigny is a graduate of Tufts University School of Medicine and did her pediatric residency training at the Children's Hospital of Philadelphia. She joined the practice in July of 2001. Board certified in pediatrics, she has a strong interest in special needs children. Dr. Sevigny is married to a  physician and they have a son, Freddy, and a daughter, Keiko.


Sheila M. Galvin, MD, FAAP

Dr. Sheila Galvin is a graduate of Boston University School of Medicine. She completed her pediatric residency at The Floating Hospital for Children at Tufts New England Medical Center. Dr. Galvin has practiced pediatrics both as a community physician, as well as providing pediatric urgent care. She is married to a Lowell General Hospital Obstetrician, and has three children.


Anita R. Shah, MD, FAAP 

Dr. Anita Shah is a graduate of the University of Kentucky College of Medicine. She completed her training at Children's Medical Center of Dallas. She was part of a group practice in Dallas, Texas and has since relocated to Massachusetts in September of 2017. An Avid traveler, aspiring chef and fitness enthusiast, she is a wonderful addition to our practice.

Nursing Practitioners


Kathy Marson, Pediatric Nurse Practitioner
Kathy received her Bachelor of Science in Nursing at St. Anselm’s College, and her Master’s of Science in Nursing at Boston College.  She spent time as a preceptor in the nursing program at Boston College.  In addition to general pediatrics, Kathy has spent over twenty years, working with the Pediatric Hematology-Oncology Program at Floating Hospital for Children in Boston.


coming soon

Alyssa Paton, Pediatric Nurse Practitioner
Alyssa received her Bachelor of Science in Nursing and her Masters of Science in Nursing at Regis College.  She spent time working as a staff nurse at Emerson Hospital, and worked at a Pediatric Practice in Waterville, ME, before joining our practice during the summer of 2018


coming soon

Sarah Morasse, Family Nurse Practitioner
Sarah received her Bachelor of Science in Nursing and her Masters of Science in Nursing at the University of Massachusetts.  Sarah has spent time working in Family medicine as well as in urgent Care. Sarah joined our practice in the summer of 2018.

Nursing Staff


is our clinical manager. She received her BSN in nursing from The University of Lowell.  Prior to joining our practice, she was a school nurse, and also worked in adult hospice care.


received her Board certification in Nurse Coaching in 2023 previously received her RN from Mount Wachusett Community College , and received her LPN from Greater Lowell Vocational and Technical School.  She worked with Dr. Sevigny before coming here in 2002.


received her Bachelor of Science in Health Education from UMass Lowell and her Associates of Science in Nursing from Middlesex Community College.  She comes to us from LGH where she was a Registered Nurse on the Pediatrics floor from 2006-2019.


received her LPN from the Tewksbury State Hospital School of Nursing.  She joins us with a great deal of experience in office based pediatrics.


trained at Shawsheen Tech and then received her MA from Northern Essex Community College. Prior to joining us, she worked in The Emergency Department at Saints' Medical Center. In addition she worked for Mayo Medical Labs.

Lee Ann

Lee Ann  
received her BSN from Rivier University.  She also works at Lowell General Hospital in Pediatrics.


received her RN from Middlesex Community College. She worked in the mother infant unit at Lowell General Hospital for 10 years.

Front Office Staff


Office Manager since 2005


Referral Coordinator since 1999


Billing since 2001


Front Desk since 2006


Billing since 1990

Contact Us

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Hours of Operation

We open Monday - Friday at 7:30 am, Saturdays at 8:00 am


Open at 7:30 am


Open at 7:30 am


Open at 7:30 am


Open at 7:30 am


Open at 7:30 am


Open at 8:00 am