Monarch Pediatrics

04/16/2026

National Wear Your Pajamas to Work Day?!?
Say less.
No cap! Of course we celebrated. Did you?

04/15/2026

We apologize, but our phone system is currently not able to call in or out. MyChart is still working, so you are welcome to communicate that way. We are working on repairing our system. So sorry for the inconvenience.
For emergencies, please call 911.

04/15/2026

Dr. Nicastro will be "in the wild" at St. Louis Children's Hospital's Ready-Set-Ride bike event on Saturday, April 25! This is a free event for children ages 4-10 where children can ride their bikes or learn to ride their bikes. There will be helmet fittings and helmet sales also. Come with your children to ride and update your safety equipment.

Be sure to look for Dr. Nicastro while you are there!

04/13/2026

Does your child need a bike helmet or need a new one? Schedule an appointment through the Safety Stop through May 31 and get a helmet for $5!!

04/12/2026

The doctors and staff got together for a family picnic in some perfect weather today. And we worked on a fun art project that we can’t wait to show you soon!

04/11/2026

Was anyone else down at the gostlouis marathon this morning? Dr Chen was there running a half marathon (13.1 miles). Way to go, Dr Chen!!!!! 👏🏻👏🏻👏🏻

🏃‍♀️

04/11/2026

Register for an awesome event teaching bike safety at the Children's Specialty Care Center on Saturday April 25th. Children will be able to come out and ride or learn to ride their bike in a safe space. Helmet fittings and helmet sales are also available.

Sign Up at
https://m.signupgenius.com/ #!/showRSVPSignUp/8050A45ADAA28A4FD0-63028561-ready?useFullSite=false

04/07/2026

It’s that time of year! If you haven’t already done it, call our office to get your kid scheduled for their yearly check-up. We are ready for ALL the physicals, sports physicals and well visits. And we are all still accepting new patients. Make your appointment through MyChart or online via our website at monarchpediatrics.washu.edu

03/30/2026

Happy National Doctor's Day to four of the craziest!

03/12/2026

It is with heavy hearts that we share news of the passing of Dr. Nicastro's husband, Peter, earlier this week. Dr. Nicastro thanks her patients and their families for understanding about her need for some time away from the office. Drs. Chen, Hosler, and Vermont have big shoes to fill, but they are honored to care for your children while Dr. Nicastro is out. Thank you for your support of Dr. Nicastro ❤️

Nicastro, Peter James , age 50, of Chesterfield, MO, passed away on March 9, 2026, fortified with the Blessed Sacrament, surrounded by his loving family and friends. Peter is survived by his beloved wife, Ellen Nicastro his dearest children, Peter, Jr. and Elizabeth his devoted mother, Mary Elizabet...

02/27/2026

It's time! The trees are starting to pollinate! If you or your child has allergies, and you haven't started your medication, now is the time to start. Also remember to keep windows closed to avoid excess pollen exposures. If you need to know the best medication choices for your child's symptoms, send us a message or call us for advice.

02/21/2026

Dr Nicastro and Dr Chen ran 1 last mile today to get their 5th medal in the Snowball Series! Keeping active, even in the cold winter!