Patient Portal. Contact Us. Catonsville Pediatrics. Catonsville Pediatrics 1011 Frederick Road Catonsville, MD 21228 US (410) 744-4849. Hours. Open today. 08:30 am - 05:00 pm. Monday - Friday: 8:30am - 5:00pm Saturday: 8:30am - 12:00pm. Get directions. Catonsville Pediatrics. Catonsville Pediatrics 1011 Frederick Road Catonsville, MD 21228 US ....