Welcome to Our Practice

Welcome to the pediatric practice of Drs. Mark Gilchrist, Lisa Sevigny, Sheila Galvin, and Anita Shah in Chelmsford, Massachusetts.

In this practice, we have a strong commitment to patient and parent education. We believe that parenting can be more fun and more effective if you are informed and prepared. We believe that an informed patient or parent is a valuable ally in our attempt to provide the best health care. But, no educational material can replace the direct patient care you receive in our office.

Here for you 24/7/365, even evenings!

In addition to extended hours, including evenings, we provide 100% of our own on-call coverage.  That means if you have a question any time, day or night, weekday, weekend or holiday, a member of our clinical staff is always on call to answer your questions!  If you have a medical emergency that cannot wait until we are in the office during regular business hours, the on-call doctor can be reached at 978-988-1888.

Better Communication, Better Care!

  • We are a PORTAL based practice.  Lab results and other pertinent information is published to our patient portal for easy access and rapid communication.
  • The portal can be used to answer questions and provide additional information, including clearance or excuse notes.
  • Often, inquiries generated via telephone will be answered via the portal.  This allows secure and clear communication without impacting busy schedules of parents, patients and staff.
  • Patients are encouraged to use the portal for non-urgent questions or to share information in a HIPAA compliant fashion.
  • This allows seamless communication that works for both the patients and the staff
  • If you are unfamiliar with the portal, or have trouble accessing it, be sure to ask the front desk and they will be happy to get you up to speed!


FLU Vaccines:  Flu vaccine is available by appointment only for patients ages 6 months and up.  Please call the office to schedule an appointment.

COVID Vaccines:

Covid Vaccine is now being offered for children ages 6 months to 4 years and 5-11year is still available. We strongly recommend the immunization and booster dose for ALL eligible individuals.  Pfizer Covid Vaccines are now available to be given at the office.  VACCINES ARE GIVEN BY APPOINTMENT ONLY, Please call the office to schedule an appointment.  For more information on COVID-19 Vaccines for Children please visit the CDC website here: CDC Covid Vaccine

FOR MORE INFORMATION ON Pfizer-BioNTech COVID-19 Vaccine click:  Click Here

After you have received your vaccine register for V-safe: Click Here

Annual Physicals:

All patients over the age of two should have a comprehensive well-child exam every year.  In addition to the enormous health benefits of routine screening, these annual visits are required for participation in many scholastic and sports programs.

If your child is not up to date on his or her physical exam, call our office to set up an appointment.  We require all patients to have an annual exam.

Please be aware of our Holiday hours: The office is closed on New Years Day, Memorial Day, Independence Day (July 4th), Labor Day, Thanksgiving and Christmas

Featured Articles

Read about helpful topics

  • Type 2 Diabetes: Tips for Healthy Living

    Children with type 2 diabetes can live a healthy life. If your child has been diagnosed with type 2 diabetes, your child's doctor will talk with you about the importance of lifestyle and medication in keeping your child's blood glucose (blood sugar) levels under control. ...

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  • Urinary Tract Infections in Young Children

    Urinary tract infections (UTIs) are common in young children. These infections can lead to serious health problems. UTIs may go untreated because the symptoms may not be obvious to the child or the parents. The following is information from the American Academy of Pediatrics about UTIs—what they are, ...

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  • Tips for Parents of Adolescents: Common Concerns

    Most importantly, let your teen know that he or she can talk with you and his or her doctor about dating and relationships. Offer your guidance throughout this important stage in your teen's life. ...

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  • Sleep Apnea and Your Child

    Does your child snore a lot? Does he sleep restlessly? Does he have difficulty breathing, or does he gasp or choke, while he sleeps? If your child has these symptoms, he may have a condition known as sleep apnea. ...

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  • Middle Ear Fluid and Your Child

    The middle ear is the space behind the eardrum that is usually filled with air. When a child has middle ear fluid (otitis media with effusion), it means that a watery or mucus-like fluid has collected in the middle ear. Otitis media means middle ear inflammation, and effusion means fluid. ...

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  • Sinusitis and Your Child

    Sinusitis is an inflammation of the lining of the nose and sinuses. It is a very common infection in children. ...

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  • Haemophilus influenzae Type b

    Depends on the site of infection. May include ...

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  • Febrile Seizures

    In some children, fevers can trigger seizures. Febrile seizures occur in 2% to 5% of all children between the ages of 6 months and 5 years. Seizures, sometimes called “fits” or “spells,” are frightening, but they usually are harmless. Read on for information from the American Academy of Pediatrics ...

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  • Bronchiolitis and Your Young Child

    Bronchiolitis is a common respiratory illness among infants. One of its symptoms is trouble breathing, which can be scary for parents and young children. Read on for more information from the American Academy of Pediatrics about bronchiolitis, causes, signs and symptoms, how to treat it, and how to prevent ...

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  • Acute Ear Infections and Your Child

    Next to the common cold, an ear infection is the most common childhood illness. In fact, most children have at least one ear infection by the time they are 3 years old. Many ear infections clear up without causing any lasting problems. ...

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Meet our Doctors

  • Dr.
    Mark G. Gilchrist
    MD, FAAP
    Doctor

    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 advisor 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.

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  • Dr.
    Lisa M. Sevigny
    MD, FAAP
    Doctor

    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 Lowell General Hospital emergency room physician and they have a son, Freddy, and a daughter, Keiko.

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  • Dr.
    Sheila M. Galvin
    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 Lowell General Hospital emergency room physician and they have a son, Freddy, and a daughter, Keiko.

    Read More
  • Dr.
    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.

    Read More

Testimonials

  • "Everyone at the office is great!"
    Amy S.
  • "Dr. Gilchrist is a fantastic pediatrician."
    Steve
  • "Always has time for questions, makes the kids comfortable. Great staff!"
    KBW
  • "Have had nothing but amazing interactions with everyone at this office. Not only is everyone super bubbly, they take us right on time, and they have even stayed open late in order for us to get there to check out our son when we had a concern."
    Rebecca R.

Our Location

Find us on the map

Hours of Operation

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

Monday:

Open at 7:30 am

Tuesday:

Open at 7:30 am

Wednesday:

Open at 7:30 am

Thursday:

Open at 7:30 am

Friday:

Open at 7:30 am

Saturday:

Open at 8:00 am

Sunday:

Closed