Meet Our Team


We are a close knit group of six board certified pediatricians trained to care for children from birth through adolescence.

Irwin Gribetz, MD
Meredith Grossman, MD
Blair Hammond, MD
Alefiyah Malbari, MD
Carrie Quinn, MD 


Cheramie Simmon
Clinical Supervisor
Cheramie is responsible for day-to-day clinical operations of all of the pediatric FPA practices. She also directly supervises and trains all of the pediatric medical assistants.

Lucia Hoyte
Financial Coordinator
Lucia is responsible for assisting patients with financial options for treatment. She also monitors the revenue cycle for the entire department and oversees all front desk operations.

Kyra Watts
Administrative Manager
Kyra manages the Pediatric Call Center which schedules patient appointments in a centralized setting focusing on a positive patient experience. She spearheads monthly meetings and works closely with the physicians to review practice operations and discuss target goals to improve patient services ensuring optimum service is always delivered.

Medical Assistants

Alejandrina Behagen
Samantha Diaz
Kelly Pino
Diamond Ruiz

Contact Us

To make an appointment or for more information:
Tel: 212-241-4242
Fax: 212-360-6714

Mount Sinai General Pediatrics Faculty Practice
5 East 98th Street, 10th Floor
New York, NY 10029

Hours of Operation:
Phone lines open at 8am daily

Monday, Wednesday, Thursday, Friday 9am - 5pm
Tuesday 9am - 6pm
Weekends/Holidays Urgent visits only - times determined by doctor on call

Doctor on-call for urgent issues on weeknights after 5pm, weekends, and holidays available at: 212-241-4242

For billing questions, please call:
Tel. 212-987-3100

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