Dr. Duyen Nguyen, DO

Dr. Duyen Nguyen, DO

Allergist
23543 Kingsland Blvd, Ste 100, Katy, TX
4.56
“Amazing doctor and great staff. Dr Nguyen is thorough and really does the best job at working to understand her patients and their specific needs. She understands that not everyone is the same and treats you on an individual level. ”
Jessicka L.February 27, 2026
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What patients are saying

Overall rating

4.56

Average wait time

4.28

Bedside manner

4.68
“Amazing doctor and great staff. Dr Nguyen is thorough and really does the best job at working to understand her patients and their specific needs. She understands that not everyone is the same and treats you on an individual level. ”
Jessicka L.February 27, 2026
“Glad I visited Dr Nguyen. She explained in detailed the possible cause of my sudden severe allergic attack and guided me with the correct medications which was mismanaged by Emergency Room Physician. ”
Beverly D.February 26, 2026

About Dr. Duyen Nguyen

**PLEASE NOTE: you will need to fill out additional paperwork upon arrival of your appointment. Dr. Nguyen joined Allergy & ENT Associates in November 2010. She is a Diplomate of the American Board of Allergy and Immunology and the American Board of Pediatrics. Dr. Nguyen was born and raised in Vietnam. She immigrated to the U.S. with her family at the age of 18. Dr. Nguyen graduated summa cum laude from the University of St. Thomas, Houston, in 2000. She attended the first two years of medical school at Michigan State University and later transferred to the University of North Texas Health Science Center in Fort Worth, where she completed her training in 2005. Dr. Nguyen completed her Pediatric residency and Allergy/Immunology fellowship at Texas Children’s Hospital, Baylor College of Medicine, Houston, in 2010. During her training, Dr. Nguyen participated in several volunteering works, including caring for children with HIV in Botswana, Africa, and treating children in Navajo Nation, New Mexico. Dr. Nguyen’s clinical interests include food allergy, asthma, allergic rhinitis, chronic sinusitis, urticaria, and immunodeficiency in both adults and children. Providing compassionate care and being the patients’ strongest medical advocate is her primary goal. She is married and has three beautiful daughters.

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Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Asthma
Chronic nose and throat inflammation due to allergies
Asthma
Chronic nose and throat inflammation due to allergies

Office locations

Allergy & ENT Associates (1 of 2)
23543 Kingsland Blvd, Ste 100, Katy, TX 77494
Allergy & ENT Associates (2 of 2)
25250 NW Fwy, Ste 100, Cypress, TX 77429
1 of 2

Education and background

Practice names

Board certifications

  • American Board of Allergy and Immunology

Education and training

  • Medical School - University of North Texas, Doctor of Osteopathic Medicine
  • Baylor College of Medicine, Texas Children’s Hospital, Fellowship in Allergy and Immunology
  • Baylor College of Medicine, Texas Children’s Hospital, Residency in Pediatrics
  • University of St. Thomas, Houston (Bachelor’s)

Languages spoken

  • English

Provider's gender

Female

NPI number

1619288347

Patient reviews

All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.56
Wait time
4.28
Bedside manner
4.68
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176 reviews
Most relevant
The Doctor was very thorough and professional. She took time with the examination and explained everything very well.
Verified patient
Everyone in the office was so accommodating, and I really enjoyed talking with Dr. Nguyen.
Verified patient
Dr. Nguyen is always thorough and willing to discuss all options so you can make informed decisions. She is also super sweet!
Verified patient
The staff is very professional and make the visits enjoyable. Dr Nguyen always listens and always takes care of my requeats.
Verified patient
Very compassionate doctor. Listened to me and genuinely wanted to help and get me the best treatment for me
She was excellent! She listened, gave options and recommendations, and gave thoughtful and thorough explanations.
Verified patient
The Doctor was very knowledgeable, friendly, and professional. I am very satisfied with my first visit with her!!
Verified patient
Most kind, patient and understanding Doctor and staff I have yet to meet, and I have met alot. Thank you
Verified patient
Very informative and gave us answers that we needed. Very polite and showed concern. Thank you
Verified patient
Great. She was extremely professional and nice. The staff was friendly and helpful.
Verified patient
Always a pleasure! She always takes her time! Greatly appreciate her and her staff
Verified patient
Dr. Nguyen and her staff are so nice and helpful. They make you feel comfortable.
Verified patient
I loved dr Nguyen , she is so caring and willing to explain everything
Very efficient, short wait time. Provided us with the needed information.
Very thorough about my symptoms and recommending specific treatments.
Down-to-earth doctor, super friendly and very informative. Love her!
The Doctor and the staff were very welcoming and professional!
Verified patient
She is very thorough and attentive. She really cares! :)
Amazing doctor and great staff. Dr Nguyen is thorough and really does the best job at working to understand her patients and their specific needs. She understands that not everyone is the same and treats you on an individual level.
Verified patient
Glad I visited Dr Nguyen. She explained in detailed the possible cause of my sudden severe allergic attack and guided me with the correct medications which was mismanaged by Emergency Room Physician.
Verified patient
Good dr
Verified patient
Good visit, gave me assurances regarding my condition and appropriate medications, and a follow up appointment in 2 weeks, no complaints here.
Verified patient
Super attentive and friendly
Verified patient
Staff was soooooooo sweet!!!
Verified patient
Allergey & ENT changed their system and ZocDoc doesn't communicate with it now. All the questions answered through ZocDoc were not received and I wasted another 25 minutes in the office filling out the same forms. Once called back I waited 45 minutes to see the doctor, who spent 5-10 minutes with me. After another 45 minutes of waiting for the allergy test administrator, a very nice nurse came in and told me the administrator was running behind and it would be another hour before they could even administer the tests. Now I'm an hour and a half into an appointment I showed up on time for, and it would be approximately another 2 hours before the test results were administered and read. I don't have four hours to wait at a doctor's office because of their inefficiency. I left, frustrated, with nothing accomplished. It was a big waste of time and they charged me an office visit. I highly do not recommend going here.
Dr. Nguyen was absolutely outstanding! My 5-year-old was terrified to get allergy tested, and she made her feel so comfortable! We also found out she’s been misdiagnosed with a gluten, milk, egg and dairy allergy for years! This visit was life changing for my daughter and will save us a fortune on groceries now too. Dr. Nguyen is an absolute lifesaver!
Verified patient
Doctor Nguyen was very thorough and took her time to explain our son's disease process which we really appreciated. Her staff is very friendly as well. I definitely would recommend her!
Verified patient
Dr, Nguyen is a great communicator and listens to everything the patient has to say. She will let you know what needs to be done in order to feel better.
Verified patient
She didn't recommend test that wasn't needed.
Verified patient
Excellent
Dr. Nguyen is really a great doctor. She listened to all my concern and asked plenty of questions to clarify things. She made sure to explain what test I am required and was extremely nice. I felt this is the doctor I would want to be seen all the time. Thank you doctor Nguyen :)
She’s great!
Verified patient
Dr.Nguyen is so knowledgeable, passionate and very personable. She knows what to do, how to do it and when to do it. She will alway treat my family with our allergy ENT needs. Thanks for being so amazing.
Verified patient
Dr. Nguyen is very thorough and personable! When my sons pediatrician wanted him to see an allergist ASAP before his summer in the Philippines, they took him within 2 days! He had some uncertain allergies so she did all the necessary testing he needed so we could be easy here in the US while he spend his summer with his grandma in the Philippines. And he followed her recommendations and he was allergy and asthma free all summer! Also, very important, as a nurse I know how important it is to get to your patients eye level for their comfort, and she did exactly that for my son. She also works out of 2 offices which I find very convenient!
Verified patient
Very knowledgeable
Dr. Nguyen was extremely kind, informative, and amiable! I'm happy to have her taking care of my allergy needs going forward.
Verified patient
The Dr. is wonderful and so are the staff. The doctor and staff listen to what has been wrong with me and did some tests and now I am feeling much better.
Verified patient
I give Dr. Nguyen and staff 5 stars rating . Very professional and I liked how she explained and order blood work to figure out what’s going on with my condition.
Verified patient
Dr. Nguyen was awesome. She’s got more of a proactive approach than reactive, which I really appreciated! Don’t just put a band-aid on the problem, fix it! Thank you doc!
Verified patient
Dr Nguyen is one of the best doctor ive seen in town. She cared for her patient and very detailed with her explanation to make sure you understand. The staff are very friendly and very accommodating. I surely come back in this office and recommend them to my family and friends.
Verified patient
The staff, from the receptionist to her nurse was exceptional. Dr. Duyen Nguyen was professional, courteous and respectful. She took the time to explain her plan of care and made sure my son understood her plan and responded to all of his concerns. She even recommended him to follow up with an allergist where he lives in SC. She spend quality time with him and explained in detail of his condition. As a parent, it was comforting that she treated my son like a patient and not just a number. She is a real professional and passionate at her work and it shows. Highly recommend her.
Verified patient
I will not be returning to see Dr. Nguyen. She did not ask me about any other symptoms other than what she could see, my red rash. She did not examine the various locations of the rash, so therefore she did not notice that it is different on different areas of my body. She was not willing to discuss possibilities of what the root cause could be of my skin rash. When I probed for with more questions,she told me to look up what she thought it was on the internet when I got home. She told me that many people have hives and never know why. That doesn't work for me... Then she prescribed 3-4 over the counter drugs - way to much for me...nope, won't be back, won't recommend.
Verified patient
Saw the doctor, I think she made a good initial appraisal, time will tell if it gets better. Her nurse Nataly was very pleasant.
Verified patient
excellent service and friendly staff. I felt comfortable to be there. Will schedule my next appointment soon for my follow up.
Verified patient
I took my 5 year old for some concerns with potential allergies. She thanked us for choosing her to care for my child then took the time to explain the different classes of medications that could be used to treat allergies. She also discussed what is happening biologically when my daughter comes in contact with an allergen and how those different classes of meds work in different ways. She was super gentle and friendly to my daughter and even took the time to listen to something my child felt was important about our schedule, which had no bearing on her treatment. I was really pleased with Dr. Nguyen and my daughter thinks she is pretty cool and is glad we went to see her. :-)
Verified patient
She didn't fully listen to what I had to say. I went in for problems with my asthma but she was more concerned about what the computer testing said than listening to the fact that I had been using my inhaler prior to coming in. She doesn't seem to know much about asthma at all and gave the impression of being new and relying more on computer testing than patient assessment
Verified patient
I'm very happy with the way they took care of me in the office. The staff was very courteous to me. Dr. Duyen Nguyen explained very well what is happening to me and the treatment we are going to try for the next few month.
The only complaint I had was with the wait time but once they realized I was unhappy with it, they worked hard to get the doctor in to see me.
Verified patient
Great!
It was very good. We've learned a lot information about our kid's allergy and how to treat and avoid to help the allergy treatment.
Frequently asked questions

How soon can I make an appointment with Dr. Duyen Nguyen?

Generally, Dr. Duyen Nguyen has appointments available on Zocdoc within 1 week. You can see Dr. Nguyen's earliest availability on Zocdoc and make an appointment online.

Is Dr. Duyen Nguyen accepting new patients?

Dr. Duyen Nguyen generally accepts new patients on Zocdoc. You can see Dr. Nguyen's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Duyen Nguyen accept my insurance?

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Can I make an appointment with Dr. Duyen Nguyen online?

Yes, you can make an appointment online with Dr. Nguyen using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Duyen Nguyen work with?

Where is Dr. Duyen Nguyen's office located?

Dr. Duyen Nguyen has 2 office locations, including in Katy and Cypress, view full addresses on Dr. Nguyen's profile.

Which board certifications does Dr. Duyen Nguyen have?

Dr. Duyen Nguyen is certified by American Board of Allergy and Immunology.

What are common reasons for patients to see Dr. Duyen Nguyen?

Dr. Duyen Nguyen frequently sees patients for Allergy Consultation, Allergy Testing, Eczema, Rash, and Sinus Problems / Sinusitis. You can see other visit reasons for Dr. Duyen Nguyen on their profile.

What languages does Dr. Duyen Nguyen speak?

Dr. Duyen Nguyen speaks English.

How do patients rate Dr. Duyen Nguyen in reviews?

176 patients have reviewed Dr. Duyen Nguyen. The overall rating for this doctor is 4.56/5. They have a 4.68/5 rating for bedside manner and a 4.28/5 rating for wait time. You can read individual reviews and ratings on their profile.

ZocdocSugar Land, TX AllergistsDr. Duyen Nguyen, DO