What patients are saying
Overall rating
4.87
Average wait time
4.51
Bedside manner
4.87
“Dr. Nsouli actually listened to me and rather than just keep writing prescriptions he actually wants to help me to get better!”
Louis B.February 25, 2026
“Very knowledgeable about asthma and extremely thorough visit. I met with the doctor and his assistant, Suad. She is a great listener and practitioner. I have a follow up in 2 weeks.”
David L.February 12, 2026
About Dr. Talal Nsouli
Dr. Talal M. Nsouli is the Director of the Watergate and McLean Allergy and Asthma Centers. In that capacity, he was President Bill Clinton's personal allergist for the full eight years of his presidency. In addition, he served as an allergy consultant to President George W. Bush's White House Medical Office as well as to President Barack Obama's White House Medical Office.
Dr. Nsouli earned his medical degree from Vrije Universiteit Brussel Faculteit Geneeskunde & Farmacie. He completed his residency training at Saint Peter's University Hospital and Georgetown University Medical Center, followed by a fellowship in Allergy and Immunology at Georgetown University Medical Center.
He is a Clinical Professor of Pediatrics and Allergy/Immunology and a Distinguished Research Scientist at the International Center for Interdisciplinary Studies of Immunology at the Georgetown University School of Medicine in Washington, D.C. Dr. Nsouli is an Honorary Fellow of the American College of Allergy, Asthma and Immunology and was elected to its Board of Regents, the governing board of this organization, for the 2009-2012 term.
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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.
Allergic skin reaction with hives
Asthma
Chronic nose and throat inflammation due to allergies
Allergic skin reaction with hives
Asthma
Chronic nose and throat inflammation due to allergies
Office locations
Dr. Talal Nsouli, MD also offers online video visits for patients
The Watergate and McLean Allergy & Asthma Centers (1 of 2)
1749 Old Meadow Rd, Ste 308, Mclean, VA 22102
The Watergate and McLean Allergy & Asthma Centers (2 of 2)
2600 Virginia Ave NW, Ste 508, Washington, DC 20037
1 of 2
Education and background
Practice names
Education and training
- Medical School - Vrije Universiteit Brussel Faculteit Geneeskunde & Farmacie
- Saint Peter’s University Hospital (Residency)
- Georgetown University Medical Center (Residency)
- Georgetown University Medical Center, Fellowship in Allergy and Immunology
- Erasmus Hospital (Residency)
Professional memberships
- Distinguished Research Scientist, International Center for the Interdisciplinary Studies of Immunology, Georgetown University School of Medicine, Washington, D.C.
- Elected to the Board of Regents, American College of Allergy, Asthma and Immunology for the 2009-2012 term.
- American College of Allergy, Asthma & Immunology
- Annals of Allergy, Asthma & Immunology
- Greater Washington Asthma, Allergy & Immunology Society
Awards and publications
- Washingtonian Magazine "Top Doctors" in Allergy/Immunology.
- Consumers' Research Council of America - "America's Top Physicians" in Allergy/Immunology.
- "Best Doctors in America" in Allergy/Immunology.
Languages spoken
- English
- French
- Spanish
- Italian
- Arabic
Provider's gender
Male
NPI number
1639271653
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.87
Wait time
4.51
Bedside manner
4.87
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
481 reviews
Most relevant
What an absolute fantastic experience !!!! Everyone was kind, brilliant and made me feel like a person!
August 12, 2025Marilynn Deane M.Verified patient
I had a great experience with Dr. Nsouli. He was kind, thorough, and listened to me.
July 18, 2025Katherine F.Verified patient
The doctor listened to my needs and their importance to me
January 18, 2026Initials hidden
I thank the doctor for everything, he was wonderful and very understanding, and also the office was very excellent
August 25, 2022Abdulqader B.Verified patient
Amazing! Wonderful office staff and Dr. Nsouli is incredible. Dr. Nsouli is compassionate, attentive and very through.
January 3, 2017Jack C.Verified patient
Brilliant doctor! Extremely knowledgeable and helps explain things at a patient-friendly level. You can tell he cares :)
July 21, 2014Initials hidden
Dr. Nsouli was very thorough with my daughter and explained everything well. He was receptive when I asked questions.
June 9, 2016Initials hidden
Dr Nsouli was great. We brought our 21 month old little girl to see him. We feel lucky to have been referred to him!
October 20, 2015Mia L.Verified patient
First appointment and I was impressed. Very thorough. Talked through everything. Made recommendations on the spot.
March 30, 2015Jeffrey S.Verified patient
wait time was long. treatment turns out to be a waste of time. Very expensive if you have deductibles. Not recommend.
November 25, 2014Huiquan L.Verified patient
Very professional! Left no stone unturned! He discovered I had a sinus infection which my general doctor didn't find!
More than 1 year agoMorgan W.Verified patient
Dr. Nsouli is excellent and really understands allergies, asthma, very helpful! Will never go to another allergist!
April 24, 2018Karen F.Verified patient
Wonderful staff and Dr. Nsouli was very professional and kind. Made sure that I understood everything we discussed.
More than 1 year agoInitials hidden
He was patient with my concerns, very friendly, and suggested many solutions to my health issues. Highly recommend!
November 15, 2016Sarah W.Verified patient
Dr. Nsouli was very knowledgeable, organized, helpful, and efficient. His staff was very competent and friendly.
More than 1 year agoInitials hidden
We haven't come up with a solution yet, so I can't really make a proper judgement. This is a work in progress.
More than 1 year agoInitials hidden
Just a true breath of fresh air-a Dr AND staff that knows how to treat a patient with courtesy and respect!
August 1, 2012Erik G.Verified patient
Dr. Nsouli is a leader in his field. If you suffer from allergies, then Dr. Nsouli is the doctor to go to.
June 15, 2015Victor Z.Verified patient
He was thorough and very good. He got to the bottom of my issue quickly and was able to help right away..
More than 1 year agoInitials hidden
Dr Talal Nsouli he is very excellent and I highly recommend ,
my appointment was really fantastic .
June 26, 2014Mohamed M.Verified patient
The visit was good but the wait to be seen was way too long. Our time as patients should valued.
More than 1 year agoDwight H.Verified patient
We are super pleased. He gave us very good advice, and we have full confidence that he can help us.
More than 1 year agoInitials hidden
Great place and friendly staff. I confused my day of appointment and they still accommodated me.
More than 1 year agoJosh R.Verified patient
Dr. Nsouli was incredibly knowledgable and friendly. His staff were very professional as well.
November 7, 2017Initials hidden
Very comfortable with the Doctor and his knowledge. I feel confident that I will feel better.
August 18, 2015Gerard M.Verified patient
Everyone was very knowledgeable and explained things well. Made me feel very comfortable.
More than 1 year agoAnn G.Verified patient
Dr. Nsouli and his staff were very professional and pleasant! I will definitely be back.
June 14, 2014Bonnie P.Verified patient
Dr. Nsouli was very thorough and gave me a lot of his time. I absolutely recommend him.
July 25, 2014Initials hidden
it was a good experience, a very good Doctor, and vrey good staff (highly professional)
More than 1 year agoInitials hidden
Excellent credentials and service. Receptionist was warm and examination was thorough.
More than 1 year agoInitials hidden
A very good overall experience with a doctor that listened and provided good adive.
June 4, 2012Initials hidden
Excellent service. Highly recommend Dr. Talal to anyone. Wonderful staff as well.
More than 1 year agoInitials hidden
Excellent. Highly professional. Patient. Incredibly helpful. Highly recommend.
March 16, 2015Initials hidden
Very professional and knows what hes talking about... definitely recommended!
August 2, 2012Tara L.Verified patient
He is truly the best of the best!!!! Awesome staff. Very thorough. A++++++++
More than 1 year agoInitials hidden
It was a pleasant visit. Dr. Nsouli's records clearly prove his credential.
More than 1 year agoInitials hidden
He is extremely knowledgeable and careful with patients. Excelent doctor!!
February 23, 2016Ariel David C.Verified patient
Dr. Nsouli is world-class. Amazing doctor and wonderful person.
March 3, 2023Julie N.Verified patient
One of the best doctors I’ve met in my life. I trusted him immediately.
October 14, 2018Erv M.Verified patient
As always, his staff and he are always very detailed and professional.
April 13, 2012Daisy S.Verified patient
Dr. Talal is very experienced and was able to treat my daughter.
December 6, 2022Asmaa I.Verified patient
Extremely thorough and knowledgeable. Was very patient with questions.
August 3, 2017Jackson S.Verified patient
Amazing attention to detail and very friendly staff. Great experience!
January 23, 2018Daniel W.Verified patient
He listened to me. Was detail oriented. Discussed my medical concerns
More than 1 year agoInitials hidden
Thorough and efficient service, very professional without being cold.
January 24, 2012Initials hidden
He was very thorough. I will recommend him to friends and coworkers.
More than 1 year agoGillian P.Verified patient
Really thoughtful doctor, great listener and extremely intelligent.
September 9, 2017Taylor F.Verified patient
Highly communicative focuses on educating the patient. Responsive
More than 1 year agoInitials hidden
Fantastic service from the whole staff. Great people, great care.
April 14, 2011Andrew N.Verified patient
Dr. Nsouli has a great bedside manner and he is very thorough!
March 23, 2015Kimberly B.Verified patient
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How soon can I make an appointment with Dr. Talal Nsouli?
Generally, Dr. Talal Nsouli has appointments available on Zocdoc within 1 week. You can see Dr. Nsouli's earliest availability on Zocdoc and make an appointment online.
Is Dr. Talal Nsouli accepting new patients?
Dr. Talal Nsouli generally accepts new patients on Zocdoc. You can see Dr. Nsouli's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Talal Nsouli accept my insurance?
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Can I make an appointment with Dr. Talal Nsouli online?
Yes, you can make an appointment online with Dr. Nsouli using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Talal Nsouli work with?
Where is Dr. Talal Nsouli's office located?
Dr. Talal Nsouli has 3 office locations, including in Washington, Burke, and Mclean, view full addresses on Dr. Nsouli's profile.
What are common reasons for patients to see Dr. Talal Nsouli?
Dr. Talal Nsouli frequently sees patients for Allergy Consultation, Allergy Testing, Rash, Sinus Problems / Sinusitis, and Sore Throat. You can see other visit reasons for Dr. Talal Nsouli on their profile.
What languages does Dr. Talal Nsouli speak?
Dr. Talal Nsouli speaks English, French, Spanish, Italian, and Arabic.
How do patients rate Dr. Talal Nsouli in reviews?
481 patients have reviewed Dr. Talal Nsouli. The overall rating for this doctor is 4.87/5. They have a 4.87/5 rating for bedside manner and a 4.51/5 rating for wait time. You can read individual reviews and ratings on their profile.