About Us

About Cardinal Pediatrics

Our mission is to partner with parents to promote overall health and wellbeing of children. 

Our Hours:*

Monday 8:30am to 6:30pm

Tuesday 8:30am to 4:00pm

Wednesday 8:30am to 3:00pm

Thursday 8:30am to 6:30pm

Friday 8:30am to 4:00pm

Saturday 9:30am to 12:30pm

Available 24/7 via videoconferencing or phone

Our Team

Dr. Purnima Baranwal, MD FAAP

Dr. Baranwal graduated from Gandhi Medical College in Bhopal, India, and served her pediatric residency with one of the leading teaching hospitals in India. She became the chief resident based on academic performance. She managed several vaccine preventable diseases, including Chicken Pox, Diphtheria, Measles, Tuberculosis, and other communicable diseases.

Dr. Baranwal served a second pediatrics residency in New York, where she was again selected as the chief resident by faculty and peers. During her residency she focused on Social Determinants of Health.

Since 2007 Dr. Baranwal has been working in the Lowell/Chelmsford area, including 8 years at Lowell Community Health Center serving our diverse community and connecting with local community health resources.

Dr. Baranwal decided to open her own practice so she could focus more closely on working with her patients and their families and connecting families with community resources.

When not working in Cardinal Pediatrics, she likes to run/hike and cook with her children. She lives in a multigenerational family with her father, mother in law, husband, two children and a dog. 

Catherine Hermann, CPNP-PC

Catherine (Cate) Hermann, PNP, joined the practice in January 2018. She received her B.A. in Sociology and International Studies from Loyola University of Chicago in 2010, and her BSN and MSN from the MGH Institute of Health Professions in May 2017.  She completed her clinical training at MGH Hospital for Children, Boston Childrens, Pentucket Medical Pediatrics, and Drumhill Pediatrics.


Cate's interests include newborn/infant development, and pediatric mental health. A north shore native, when Cate is not caring for patients she enjoys travel, kayaking, hiking, horseback riding, and skiing.  

Dr. Rekha Bains, MD FAAP

Dr. Rekha Bains has been a pediatrician for 37 years. Born and raised in India, she graduated from Lady Hardinge Medical College in 1975. From there she moved to Canada to complete her residency and fellowship at Children’s Hospital in East Ontario and Kingston General Hospital. She has been a pediatrician in the Lowell area for over 20 years.


Dr. Bains has retired from practice as of April 2020, however she remains an advisor to the practice.

Dr. Bains lives locally and is spending her retirement enjoying time with her three children, and five grandchildren.

Why Choose Us

  • We are a small practice that takes great interest and care with our patients and their families

  • Connected with community resources

  • We are available 24/7 with on call services when the office is closed

  • Phone calls during office hours are returned by either the MD or NP

  • We speak English, Spanish, Portuguese, Khmer, and Hindi 

  • Designated Newborn room

  • Electronic submission of medications for ADHD, and other prescriptions

  • Close proximity to Lowell General Hospital - if your child needs lab work or imaging done we are across the street from the LGH lab and radiology departments

  • Pediatrics practice serving families from Billerica, Chelmsford, Dracut, Methuen, Nashua, Tewksbury, Tyngsborough, Lowell, and Westford