What patients are saying
Overall rating
4.75
Average wait time
4.36
Bedside manner
4.79
“Dr. Marcu is lovely! Very kind, funny, and curious. I can tell she really wants to help and understand what is going on. Also I was seen 10 minutes early which is fabulous! ”
Roma K.Less than 6 months ago
“I had a great experience meeting with Dr Mariana. They were professional, attentive, and took the time to listen and explain everything clearly. I left feeling reassured and well cared for. Highly recommend!”
Roick H.July 14, 2025
About Dr. Mariana Marcu
Dr. Mariana Marcu M.D., FAAAAI is a board certified allergist in New York City. With more than 15 years of clinical experience, Dr. Marcu specializes in skin allergic conditions, asthma, allergy immunotherapy for seasonal and perennial allergic rhinitis, along with insect venom allergies, and food and drug oral challenges. She conducts state-of-the-art testing and manages patients’ treatment in her two offices, which are conveniently located in midtown Manhattan and SoHo.
Dr. Marcu is a graduate of Carol Davila University of Medicine and Pharmacy in Bucharest, Romania. She gained her certification from the American Board of Internal Medicine and the American Board of Allergy and Immunology. She completed her residency at NYHQ–New York–Presbyterian Healthcare System and continued there as chief medical resident for an additional year. Her Allergy, Asthma & Immunology fellowship was completed at North Shore–LIJ Health System, which was previously located at Schneider Children’s Hospital.
Dr. Marcu is a fellow of the American Academy of Allergy, Asthma & Immunology (AAAAI). She is also a member of the New York Allergy & Asthma Society (NYAAS) and the World Allergy Organization (WAO). To keep up to date with the latest scientific developments, Dr. Marcu participates in the annual meetings of the American Academy and College of Allergy, Asthma & Immunology along with other international lectures and conferences in the field.
In her free time, Dr. Marcu enjoys listening to jazz and classical music with her husband, attending art galleries with her daughter, and strolling through Central Park with Maggie, her cocker spaniel.
Is this doctor in your insurance network?
Enter your insurance carrier and plan
choose insurance
In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
Office location
Education and background
Practice names
Hospital affiliations
- Lenox Hill Hospital
- The Mount Sinai Hospital
Board certifications
- American Board of Allergy and Immunology
Education and training
- Medical School - Universitatea de Medicina si Farmacie Carol Davila Facultatea de Medicina
- New York Hospital Queens (Residency)
- North Shore-Long Island Jewish Health System, Fellowship in Allergy, Asthma and Immunology
Professional memberships
- American Academy of Allergy, Asthma & Immunology
- New York Allergy and Asthma Society
Awards and publications
- Patients' Choice Award 2008
Languages spoken
- English
- Spanish
- Romanian
Provider's gender
Female
NPI number
1336222165
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.75
Wait time
4.36
Bedside manner
4.79
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
971 reviews
Most relevant
She has been my Doctor for many years. She stays on top of all your issues. I absolutely trust her and highly recommend her.
August 20, 2024Alma M.Verified patient
Dr Marcu is lovely, knowledgeable, a great listener and very helpful. The office staff were great too, very professional.
August 14, 2024Ellen N.Verified patient
The doctor was super friendly, humorous and thoughtful. She is very experienced doctor. I highly recommend her.
July 9, 2024Orkhontuul E.Verified patient
The office seems too small for the number of patients seen. There were only 2 exam rooms to the 4 people in the waiting area.
More than 1 year agoInitials hidden
Amazing doctor! Mad I didn’t go to her sooner. Best allergist I’ve ever been to and I’ve seen too many in the tri state area
July 25, 2019Melanie L.Verified patient
Easy and simple to save some time ahead of the appointment. Since I’m a new patient, still to sign the forms when I was in.
July 18, 2018Initials hidden
She was great and super nice! Would recommend anyone to come see her. Wait time is short and staff is very attentive.
August 8, 2022Ariadna V.Verified patient
Really informative and answered any questions I had. Thorough and performed extra checkups for me. Would highly recommend!
February 22, 2019Eamonn A.Verified patient
Dr. Marcu is unbelievably personable and smart. She takes the time to educate you if you want and makes you feel at ease.
April 16, 2019Kevin L.Verified patient
Amazing! Quick allergy testing. Dr. Marcu answered all of my questions and made me feel at ease. 10/10 would recommend!
More than 1 year agoMadeline F.Verified patient
The doctor was very kind and thorough. She explained everything very well and made sure I understood. Highly recommend!
March 1, 2019Initials hidden
Dr. Marcu and her staff were very attentive and friendly. I had a great experience and will recommend her to my friends!
September 30, 2010Tatyana R.Verified patient
Took the time to explain my options and make sure I wa comfortable with her recommendation. Definitely a good experience
June 29, 2011Jade P.Verified patient
Dr. Marcu spent the time to explain to me what she saw occurring on my skin even though it wasn’t an allergy reaction.
More than 1 year agoInitials hidden
Great staff. Dr. Macu herself was freakin' brilliant and personable. Patient, kind, informative, and was just great!
May 18, 2017Yaovi A.Verified patient
Office staff was friendly and efficient. Dr. Marcu has warm bedside manner. She did not rush through consultation.
October 5, 2012Initials hidden
Dr. Marcu was very personable and empathetic. I felt extremely comfortable with her and would recommend to others.
June 10, 2019Maria B.Verified patient
The doctor took more than 24hs to send the prescription order to my pharmacy, and I needed the medicine right away
More than 1 year agoInitials hidden
I was satisfied with my first visit with dr MARcu,I will definetly recommend her to somebody,she is very friendly.
August 14, 2011Stephanie K.Verified patient
I waited a little while, but she was very thorough with me and remembered me from my last visit almost a year ago
April 18, 2012Leica M.Verified patient
Very approachable, concerned and capable. Good listener, makes good recommendations. Look forward to a follow-up.
More than 1 year agoInitials hidden
Dr. Marcu was very thorough and professional. I felt like I was in good hands and had all my questions answered.
September 14, 2018Octavian T.Verified patient
Mariana is a great doctor, I've seen her a few times and she is great! Would highly recommend her!
October 2, 2023Maria Camila G.Verified patient
Dr. Marcu was very professional and nice. She made me feel very relaxed. Glad I found this excellent doctor!
April 1, 2019Initials hidden
Knowledgeable, understanding, and cares! I felt comfortable and satisfied in that she guided me correctly.
More than 1 year agoInitials hidden
Really enjoyed her. She was very knowledgable and kind. I’m going back for skin allergy testing next week.
February 27, 2019Initials hidden
My visit with her was pleasant. Dr Mariana spends some time listening to me and address my concerns well.
January 24, 2013Initials hidden
So sweet and proffesuonal! I get nervous at the doctor’s and she really comforted me. So down to earth!
February 10, 2021Bailey R.Verified patient
Dr. Marcu was knowledgeable and had a good solution for my problem. I'll definitely continue to see her.
April 8, 2010Initials hidden
Mariana is great. Didn't feel like a doctor visit, more like a friendly chat as I got some testing done.
January 17, 2019Yasser H.Verified patient
Wonderful and kind doctor who explains everything thoroughly. Very friendly and professional staff.
June 1, 2017Furhan A.Verified patient
Friendly, knowledgable and professional. I will be maintaining a relationship with Dr. Marcu for sure...
More than 1 year agoInitials hidden
I've been receiving shots here for at least 2 years now. Very nice office staff and wonderful doctor.
More than 1 year agoSamantha D.Verified patient
Very nice, open minded, professional and friendly. The staff is talented as well.
Great atmosphere!
February 2, 2010Daniel K.Verified patient
One of the best doctor I've met. Extremely informative, knowledgeable, witty and empathetic! Bravo!
June 1, 2017Katelyn Y.Verified patient
I waited forever, was charged so much $$$$ for a 5 minute test to tell me something I already knew!
More than 1 year agoInitials hidden
Fantastic doctor, really takes her time with you to find out what your issue is. Highly recommend.
December 11, 2014Initials hidden
A successful consultation. She was very knowledgeable and knew next steps and how to treat
February 8, 2023Elissandra C.Verified patient
Dr. Marcu is fantastic! I’m so pleased with my first allergist experience and will be back again.
October 1, 2019Initials hidden
Friendly receptionist and was seen within minutes after filling out paper work. Very informative
July 1, 2016Initials hidden
She is very understanding and really listens to your issues and tries to find the best solutions.
February 20, 2014Ashley B.Verified patient
She was very nice and very thorough. Made me feel very comfortable and like I was in good hands
November 26, 2014Initials hidden
Doctor is very knowledgable and very sweet - I should have started going to her a long time ago!
October 19, 2009Jennifer B.Verified patient
Would 100% recommend. Doctor was super helpful & asked a lot of questions in consultation.
March 24, 2022Courtney N.Verified patient
Dr. Marcu is absolutely the best! Very personable, makes you feel very comfortable and secure!
October 17, 2011Alfredo M.Verified patient
Excellent, professional, and always makes you feel like you have 100% of her attn, super kind
June 4, 2019Sasha S.Verified patient
The Dr. took the time to explain the kind of Allergy I have, and was patient and attentive.
July 5, 2016Michal K.Verified patient
Wonderful wonderful! I love Dr Marcu she is a fun and knowledgable doctor. Highly recommend
February 3, 2014Initials hidden
Very attentive, and took care of all my concerns. Beautiful personality, and professional.
October 23, 2018Melissa M.Verified patient
Dr. Marcu was attentive and kind. Listened to every concern I had and addressed each one.
March 6, 2020Priscilla L.Verified patient
Loading...
How soon can I make an appointment with Dr. Mariana Marcu?
Generally, Dr. Mariana Marcu has appointments available on Zocdoc within 1 week. You can see Dr. Marcu's earliest availability on Zocdoc and make an appointment online.
Is Dr. Mariana Marcu accepting new patients?
Dr. Mariana Marcu generally accepts new patients on Zocdoc. You can see Dr. Marcu's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Mariana Marcu accept my insurance?
Choose your insurance plan to verify if Dr. Marcu is in-network.
Can I make an appointment with Dr. Mariana Marcu online?
Yes, you can make an appointment online with Dr. Marcu using Zocdoc. It’s simple, secure, and free.
Which hospital is Dr. Mariana Marcu affiliated with?
Dr. Mariana Marcu is affiliated with Lenox Hill Hospital and The Mount Sinai Hospital.
What practice does Dr. Mariana Marcu work with?
Where is Dr. Mariana Marcu's office located?
Dr. Mariana Marcu's office is located at 30 E 40th St, New York, NY 10016.
Which board certifications does Dr. Mariana Marcu have?
Dr. Mariana Marcu is certified by American Board of Allergy and Immunology.
What are common reasons for patients to see Dr. Mariana Marcu?
Dr. Mariana Marcu frequently sees patients for Allergy Consultation, Allergy Testing, Rash, Sinus Problems / Sinusitis, and Sore Throat. You can see other visit reasons for Dr. Mariana Marcu on their profile.
What languages does Dr. Mariana Marcu speak?
Dr. Mariana Marcu speaks English, Spanish, and Romanian.
How do patients rate Dr. Mariana Marcu in reviews?
971 patients have reviewed Dr. Mariana Marcu. The overall rating for this doctor is 4.75/5. They have a 4.79/5 rating for bedside manner and a 4.36/5 rating for wait time. You can read individual reviews and ratings on their profile.