Dr. Boyan Hadjiev M.D., Allergist and Immunologist

Dr. Boyan Hadjiev M.D.

Allergist and Immunologist | Allergy & Immunology

30 East 40th Street Suite 203 New York NY, 10016



Boyan Hadjiev, MD, obtained his medical degree in 2000 from Case Western Reserve University School of Medicine in Cleveland, Ohio. He continued to complete his residency for internal medicine at the North Shore Long Island Jewish Health System and Albert Einstein College of Medicine in 2003; and fellowship for allergy and immunology at the same institutions in 2005. From 2009 to 2010, Hadjiev was a recipient of various awards from Vitals.com including the 'Compassionate Doctor Recognition,' 'Patients Choice Award,' and 'On-Time Physician Award.' He is a member of the American Academy of Allergy Asthma and Immunology and the American Medical Association. Listening to patients and educating patients about their health, he says, are instrumental to his success. Today, he practices adult and pediatric allergy, asthma, sinusitis medicine at the Advanced Allergy, Asthma and Sinusitis Center in New York.

Education and Training

Case Western Reserve University School of Medicine; Cleveland


University of Michigan, Ann Arbor, Mi B.A. in Biology 1996

Board Certification

Allergy and Immunology

Internal Medicine

Internal Medicine American Board of Internal Medicine ABIM - 2013

Allergy and Immunology American Board of Allergy and Immunology ABAI - 2015

Provider Details

Male English, Spanish, French, Russian, German, Italian 18 years of experience
Dr. Boyan Hadjiev M.D.
Dr. Boyan Hadjiev M.D.'s Expert Contributions
  • How is poison oak allergy treated?

    Assuming you are allegic to poison oak (and poison ivy or poison summac), the treatment would consist of avoidance (if possible), a corticosteroid cream if a rash occurs and (if warranted by severity) an oral corticosteroid medication such as prednisone (or others) Hope this answers your questions READ MORE

  • My face feels itchy. Could this be because of a food allergy?

    Hello! Given the limited amount of information provided, I suspect that this is not a case of true food allergy. READ MORE

  • I get itchy every time I'm around a dog. Is this an allergy

    Yes, this does sound like an allergy to dogs. You should seek qualified medical help and see how best to manage your symptoms as there are many treatment options. READ MORE

  • Are Avil and Cetrizine the same when it comes to treating an allergic reaction?

    If you mean Advil and not Avil, then no. Advil is ibuprofen, a pain reliever and antiinflammatory medication (NSAID). Cetirizine is a second generation, non-sedating (usually) antihistamine. Most common side effects are minimal. With cetirizine, it can make you feel tired or sleepy and it could dry out your mucus membranes. For Advil, the most common side effects are limited to GI symptoms, but it can have effects on your kidneys if taken longer. Addendum: just looked up Avil and in Australia, Avil is a brand of pheniramine maleate, which is a first generation antihistamine. It can and might make your aunt sleepy. For other side effects, I would look on the package insert. Hope this information helps. READ MORE

  • Can dog hair cause allergy for my toddler?

    Yes. You can do allergy testing on a 3 year-old. The better question is SHOULD you do allergy testing. He may not be allergic now, and may never be allergic to dogs. But he could also become allergic. IF you really want to get a dog, talk to your local allergy specialist first. And of you decide to get one, please make sure you get a kid-friendly breed. That is very important. READ MORE

  • Is it true that kids born out of a C-section have poor immunity?

    There is some truth to that, but it turns out that C section babies are more prone to developing atopy in childhood and adulthood. The important factor is what skin flora colonizes the baby's GI tract: skin flora from the nurses, the caregivers and the mother OR the mother's birth canal. I recommend you read up on the role of the microbiome in C section babies. Some OB/GYNs are now using what is called a "seeding" procedure. Hope this information helps. READ MORE

  • What is the safe dose of cetrizine for kids around 5 years of age?

    Hello, 5mg should be the right dose. In a pill or syrup form READ MORE

  • Can antibiotic treat seasonal cough?

    You are correct. An antibiotic will not treat a virus. You would get better on your own. READ MORE

  • Is an allergy to apples possible?

    Yes, one can develop an allergy to apples, though a true allergy to apples is rare. It is more likely that your daughter has developed oral allergy syndrome, especially if she suffers from "hay fever " (bitch pollen allergy seems to be the culprit). READ MORE

  • What could be the cause of the itching and bumps all over my body?

    You most likely have developed chronic urticaria (hives). It would probably be best if you saw your allergist for more help. READ MORE

  • What could be the best medicine for allergic rhinitis?

    There is no "permanent cure" though allergy immunotherapy (allergy shots or allergy drops) can be very effective in essentially desensitizing you. There is no such thing as "best medicine". The choice of medicine depends on your symptoms - essentially you can take a nasal spray (there are at least five choices) and/or a pill (an antihistamine or leukotriene modifier) and/or decongestant or any combination of the above plus more. The choice of medicines is something you should discuss with your healthcare provider. I am sorry if this information seems too vague; it is the best answer I could come up with given the information your provided. READ MORE

  • I am lactose intolerant, does it mean my child will also have this condition?

    No, it does not mean that. Without knowing why type of lactose intolerance you have (there is a rare form which is hereditary), one cannot answer the question properly. It is more likely that you have the acquired form of lactose intolerance (lactase deficiency), which is more common and which is not hereditary. READ MORE

  • Are antihistamines safe for consumption during pregnancy?

    You can take cetirizine (Zyrtec) and loratadine (Claritin) and also Benadryl and Chlorpheniramine. Keep in mind that Benadryl and Chlorpheniramine are more likely to make you drowsy. READ MORE

  • is my allergy anaphylactic

    No, it is NOT anaphylactic. If it is limited to the skin only, it is not. It is considered cutaneous (pertaining or related to the skin). READ MORE

  • Do allergies change?

    Yes, they can change over time. And yes, you can develop new ones. READ MORE

  • Strange allergy, what is it?

    You have something quite common called Oral Allergy Syndrome (also known as Pollen-Food Syndrome). The most common reason why this happens is due to allergies to birch pollen, but there are other culprits. Please take a look at this link: https://www.aaaai.org/conditions-and-treatments/library/allergy-library/outdoor-allergies-and-food-allergies-can-be-relate READ MORE

  • Using an EpiPen

    It is a tiny needle hidden inside a plastic container which pops out of the container under pressure. It is meant to be used in the mid-thigh area and you don't have that many nerve endings there. You will feel a sting, but it shouldn't hurt too much. READ MORE

  • Why am I allergic to just soy milk and no other soy product?

    My suspicion is because soy "milk" is not processed (i.e. it is "raw"). Without knowing what brand of soy milk you drink and how they process the "milk", this is just a guess. READ MORE


  • 'Compassionate Doctor Recognition,' Vitals.com, 2009 and 2010
  • 'Patient's Choice Award,' Vitals.com, 2009 and 2010
  • 'On-Time Physician Award,' Vitals.com, 2009

Professional Memberships

  • Diplomate American Board of Allergy and Immunology 2005
  • Diplomate American Board of Internal Medicine 2003


  • Long Island Jewish Healthcare System, the affiliate of Albert Einstein College of Medicine Internal Medicine 2013
  • North Shore Long Island Jewish Health System and Albert Einstein College of Medicine; 2003

Faculty Titles & Positions

  • Long Island Jewish Healthcare System, the affiliate of Albert Einstein College of Medicine Allergy and Immunology 2015


  • North Shore Long Island Jewish Health System and Albert Einstein College of Medicine, Allergy and Immunology

Professional Society Memberships

  • American Academy of Allergy Asthma and Immunology, American Medical Association

What do you attribute your success to?

  • Listening to Patients, Educating Patients about their Health

Hobbies / Sports

  • College Football, Soccer, Books, Magazines, Technology

Accepted Insurance

+ See all 10 Insurance

Dr. Boyan Hadjiev M.D.'s Practice location

30 East 40th Street -
New York, NY 10016
Get Direction
New patients: 212-679-1200

30 E 40TH ST -
NEW YORK, NY 10016
Get Direction
New patients: 212-679-1200, 917-909-6134
Fax: 212-679-3495, 212-679-3494

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Patient Experience with Dr. Hadjiev


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Dr. Boyan Hadjiev M.D. has a rating of 5 out of 5 stars based on the reviews from 78 patients. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Allergist and Immunologist | Allergy & Immunology in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.
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