What patients are saying
Overall rating
4.91
Average wait time
4.67
Bedside manner
5.00
“Dr. Tsay is truly amazing. She is great with communicating and helping her patients as much as she can. I love how much patience she has and her will to get to know each individual.”
Josiah S.January 5, 2024
“Dr. Tsay is really knowledgeable and great with children. She takes the time to educate the parent so that they can properly treat the child and also understand how and why the illnesses occur the way they do.”
Zephyr Z.March 24, 2023
About Dr. Theresia Tsay
Welcome to my practice!
My mission at Hauppauge Pediatrics is to provide the best quality care for your family. I believe that each child is special and deserves personalized care, time, and attention. I take pride in my devotion to your child’s individual needs to help them grow up healthy and strong.
In today's world of medicine, the art of traditional care has often been compromised. In my practice, I strive to bring that quality of care back. We offer routine care from newborn through college, with office hours six days a week, including early and late appointments for your convenience.
I completed my medical degree at St. George's University School of Medicine and my residency in Pediatrics at Beth Israel Medical Center. I further specialized with fellowships in Neonatal and Perinatal Medicine at the State University of New York, Stony Brook, and Tufts Medical Center.
We welcome you into our family and into my practice!
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
UnitedHealthcare
UnitedHealthcare Oxford
Office locations
Dr. Theresia Tsay, MD also offers online video visits for patients
1 of 2
Education and background
Practice names
Hospital affiliations
- Flushing Hospital Medical Center
Education and training
- Medical School - St. George's University School of Medicine, Doctor of Medicine
- Beth Israel Medical Center, Residency in Pediatrics
- State University of New York, Stony Brook, Fellowship in Neonatal and Perinatal Medicine
- Tufts Medical Center, Fellowship in Neonatal and Perinatal Medicine
Professional memberships
- American Academy of Pediatrics
Languages spoken
- English
- Spanish
- Indonesian
Provider's gender
Female
NPI number
1679741722
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.91
Wait time
4.67
Bedside manner
5.00
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
44 reviews
Most relevant
Great doctor and unmatched bedside manner. Knowledgeable, approachable and attentive
June 7, 2025Iris U.Verified patientVideo visit
Had a great video visit with Dr. Tsay! She is the best and is always very thorough and friendly!
More than 1 year agoMax C.Verified patientVideo visit
best doctor in town!!! shes patient , kind and really listens to what you have to say.
More than 1 year agoKimberly A.Verified patient
La Dra Theresa Tsay es excelente. Yo roy hace muchos anos alla. No la cambio por nada.
More than 1 year agoJS
Dr.Tsay is very helpful and accommodating!God bless you always!Stay Safe and well!
May 21, 2020Moises Bien N.Verified patientVideo visit
Dr. was attentive. Took time to inspect child and answered related inquiries.
More than 1 year agoJQ
My kids love the Doctor!
The staff are friendly:)
June 12, 2025Elian G.Verified patient
Friendly staff!
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Dr. Tsay is truly amazing. She is great with communicating and helping her patients as much as she can. I love how much patience she has and her will to get to know each individual.
January 5, 2024Josiah S.Verified patient
She is one of the best doctor!!
August 24, 2023Keita T.Verified patient
Dr. Tsay is really knowledgeable and great with children. She takes the time to educate the parent so that they can properly treat the child and also understand how and why the illnesses occur the way they do.
March 24, 2023Zephyr Z.Verified patient
Dr. Tsay and her entire staff (Sarah and Cassandra) were AMAZING! It's always nerve wracking taking all 4 of my kids to the dr at the same time but the office was comfortable and private. The staff interacted with my kids while I filled out paperwork and made the entire process smooth. Dr. Tsay was very thorough and was amazing with my kids. We found our new pediatrician:-)
More than 1 year agoEmma M.Verified patient
we interviewed 3 drs before our baby was born, and we chose Dr Tsay. she is clear spoken, friendly and worked with us intently regarding our vaccination concerns. we are proud to say she is our child's pediatrician!
July 31, 2020Avery S.Verified patientVideo visit
This provider is AMAZING. I booked my sons first appointment with her via zocdoc on a Saturday. She took the time to call me shortly after receiving my booking. We spent 30-40 minutes on the phone discussing my sons health. At the time of his appt he would be 6 days old and as a first time mom it was very imperative to find someone who was very informative and professional. I valued the time we spent on the phone, she made me feel so comfortable with her.
More than 1 year agoSoren S.Verified patientVideo visit
Excellent doctor. Highly recommended. She is caring and very friendly. She is my first son doctor and now my 2nd son. She take care of her patient's well.
More than 1 year agoCA
Nice. I can consult with the doctor easily even not in her office hour through whatsapp. The doctor always try to make my baby happy by giving her watching youtube.
More than 1 year agoQB
Wonderful doctor. We have been with her since my son was born, she has been taking care of him since. We are grateful that she is our sons doctor!
More than 1 year agoAO
Dr. Theresia Tsay is always on time to see her patients. She is also kind and explains to kid/child about the sickness on what to do or not. If she injects vaccines, you will not feel pain because she works gently but surely. We have been seeing her since 2016 & she is highly recommended for kids & family. Thank you, doctor.
More than 1 year agoJR
Dr. Theresia has been amazing, for more than 10 years, kind, patiente and great with my kids. I would recommend her to any friend and family.
More than 1 year agoSM
Dr. Tsay is nice and very accommodating. She is well experienced in her field of expertise. What I like the most is she takes time to sit down with her patient/parents and explain everything and answer your questions. She is also very patient with kids and has good rapport with them. All my kids love her!
More than 1 year agoJT
Dr. Tsay, the best pediatrician you can find! She takes every concern you have into consideration, and answers all your questions. Not only will you leave her office satisfied, but you feel like you are being treated like family.
More than 1 year agoKA
Dr. Tsay is very knowledgable and my six year old son is very comfortable with her. She is very easy to reach after hours in case of emergency and she always go over and beyond each time we see her.
More than 1 year agoEM
Very satisfied Dr. Tsay takes her time to answer my questions, and prioritizes educating parents, thereby empowering them between visits. Her bedside manner is excellent - she truly builds a relationship with each child and their parents, fostering trust. We have been so happy to have Dr. Tsay as both of our children's pediatrician!
More than 1 year agoLM
Dr. Tsay is highly, professional and very accommodating. She is kind and takes time to discuss with her patient about the illness/condition. She would go an extra mile with her tender loving care. Dr. Tsay's medical staff is also friendly and kind. Thank you doctor.
More than 1 year agoJR
It is rare to be able to look forward to a doctor's visit especially when your most precious daughter has shots on the menu, but Dr. Tsay manages, with her kindness, honesty and expertise, to do just that! She makes the visits as enjoyable and beneficial as one could ever hope for. Yvette is so lucky to have Dr. Tsay caring for her.
More than 1 year agoYG
June 10, 2025kenia F.Verified patient
May 14, 2024Lily W.Verified patient
April 6, 2024Shontee S.Verified patient
April 4, 2024Marielys B.Verified patient
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April 23, 2021Qyanna K.Verified patient
April 22, 2021Huddath L.Verified patient
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September 14, 2020Rachel M.Verified patientVideo visit
June 8, 2020Initials hiddenVideo visit
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April 8, 2020Junnyd A.Verified patient
How soon can I make an appointment with Dr. Theresia Tsay?
Generally, Dr. Theresia Tsay has appointments available on Zocdoc within 1 week. You can see Dr. Tsay's earliest availability on Zocdoc and make an appointment online.
Is Dr. Theresia Tsay accepting new patients?
Dr. Theresia Tsay generally accepts new patients on Zocdoc. You can see Dr. Tsay's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Theresia Tsay accept my insurance?
Choose your insurance plan to verify if Dr. Tsay is in-network.
Can I make an appointment with Dr. Theresia Tsay online?
Yes, you can make an appointment online with Dr. Tsay using Zocdoc. It’s simple, secure, and free.
Which hospital is Dr. Theresia Tsay affiliated with?
Dr. Theresia Tsay is affiliated with Flushing Hospital Medical Center.
What practice does Dr. Theresia Tsay work with?
Dr. Theresia Tsay works with Hauppauge Pediatrics.
Where is Dr. Theresia Tsay's office located?
Dr. Theresia Tsay has 3 office locations, including in New Hyde Park and Forest Hills, view full addresses on Dr. Tsay's profile.
What are common reasons for patients to see Dr. Theresia Tsay?
Dr. Theresia Tsay frequently sees patients for Allergy Consultation, Annual Physical, Illness, Pediatric Consultation, and Sleep Problems. You can see other visit reasons for Dr. Theresia Tsay on their profile.
What languages does Dr. Theresia Tsay speak?
Dr. Theresia Tsay speaks English, Spanish, and Indonesian.
How do patients rate Dr. Theresia Tsay in reviews?
44 patients have reviewed Dr. Theresia Tsay. The overall rating for this doctor is 4.91/5. They have a 5/5 rating for bedside manner and a 4.67/5 rating for wait time. You can read individual reviews and ratings on their profile.