Darien Pediatrics is open!

All visits are by appointment only. Walk-in hours and Saturday hours are temporarily suspended until further notice.

Currently we are seeing well-child visits, medication check-ups, weight checks, consultations, and any other appointments for your healthy child in our office.

We are still here to care for your sick children, please call our office to schedule either an in-office or telehealth visit now!

Dr. Tsimoyianis is available for adolescent and young adult consultations in the afternoon and evening hours. Please call to schedule an in-office or telehealth appointment.

Please click the button above for more information about our COVID-19 Office Policy.

Please CLICK HERE for information on Connecticut State Department of Public Health’s Return to School Guidelines.


The Pfizer COVID-19 Vaccine is now approved for children ages 12 years and older. This Sunday May 16th from 2:00-7:00pm, Grieb’s Pharmacy, 1021 Post Road, Darien, will be holding a special vaccination clinic for patients 12-18 years old. You may register on VAMS or the Grieb’s Pharmacy Pfizer Portal or call 203-655-1000 for an appointment. Walk-ins are also welcome.

All minors under 18 years old must be accompanied by a parent or guardian and both parent and child need to present their own ID. Please bring your insurance information; if you do not have insurance, you will still be able to receive the vaccine free of charge.

Darien EMS (Post 53), pharmacists and nurses will be onsite this Sunday at the vaccine clinic. If you have any questions, please call Grieb’s Pharmacy at 203-655-1000.


Our office is pleased and privileged to care for your infants, children and young adults.

What started as a solo practice to serve the Noroton area over forty years ago by our founding partner, Dr. Michael Suchenski, has grown to a group practice seeing patients from Darien and the surrounding communities.

Our three Board Certified physicians pride themselves on being an independent Pediatric group practice in one location. This setting allows us to provide comprehensive and personalized care to all of our patients from birth to young adulthood, and we are available to you both during and after office hours.

Our office is conveniently located immediately off Exit 10 on I-95.


A website for teen guys and young men, with information on physical and emotional health, nutrition, fitness and more

This website features exceptional information for young women, parents and educators in English and Spanish. Written by medical experts at Boston Children’s Hospital.

Information for teens suffering from media-related health, sleep or school problems.

Teens & Young Adults

Darien Pediatric Associates offers specialized medical care for teens and young adults through Dr. Tsimoyianis’ services in Adolescent Medicine.

Adolescent Medicine is a board-certified pediatric sub-specialty centered on the care of patients from pre-teens to young adults up to age 26. It addresses the unique health and emotional needs of patients in this age group by focusing on their transitions from childhood to adulthood. Specialized care is available for patients who have complex medical problems.

Dr. Tsimoyianis (better known to patients as Dr. T) is board-certified in Adolescent Medicine and works with patients and their support systems to provide care that is tailored to each individual. Treatment ecompasses but is not limited to body image, physical development, nutrition, sexuality, mental health and substance abuse.

Dr. T is available for routine check-ups and private consultation. Late afternoon and early evening appointments can be requested. Additionally, there is a private waiting area for adolescent and young adult patients.

American Academy of Pediatrics offers useful website

In a sea of conflicting and confusing health information, our patients have always turned to us as a trusted source of advice. Now in an extension of the pediatrician’s office, The American Academy of Pediatrics (AAP) is bringing pediatrician-approved health information to the Internet with the launch of HealthyChildren.org. As the premier website for child health information HealthyChildren.org provides important resources and a host of features to enable you to quickly find the critical, relevant information you are looking for. According to the AAP, all content is developed and reviewed by leading child health experts and reflects the latest scientific research.