Meet Our Team


Dr. Joseph Iwanicki, MD 

Dr. Joseph Iwanicki MD graduated from the medical Academy of Wroclaw, Poland in 1974. After moving to the US Dr. Iwanicki completed his residency training in Obstetrics and Gynecology at St. Luke’s-Roosevelt Hospital Center in New York, NY. Dr. Iwanicki is currently an active member of the American College of obstetrics and gynecology.
Dr. Iwanicki is a compassionate doctor beloved by his patients who has spent the last 40 years in clinical practice focused on women’s health and wellness. As a lover of beauty Dr. Iwanicki has also always had an interest in aesthetic medicine and has attended several advanced trainings and certifications. As medical director of Kalon Dermatology Dr. Iwanicki is bringing his love of patient care and aesthetic medicine to a new audience in this advanced Dermatology practice.


Danny Bronshtein,NP-C, MSN

Danny Bronshtein is a licensed and board certified Nurse Practitioner; he received his Masters of Science degree from the City University of New York and completed his NP program at the College of Staten-Island with emphasis on primary care. Danny is board certified with the American Association of Nurse Practitioners, and completed post grad training with the national academy of dermatology nurse practitioners. Danny carries a strong passion to help all patients, and those who need help with their skin in particular. Offering treatment to common skin conditions such as acne, discolorations, rosacea, analysis (biopsy) of skin disorders and dermatological aesthetics services. Besides working at Kalon Dermatology Danny is also a part-time faculty member teaching Biology. Danny enjoys spending time with his family and is an avid participant in all types of sports.


Yelena Terushkin, PA-C, MSPA


Yelena Terushkin is a licensed physician assistant in the state of New York and Florida with experience in medical, surgical and cosmetic dermatology. She has successfully treated dermatological conditions in both pediatric and adult populations of all skin types. Yelena also specializes in cosmetic dermatology including Botulinum Toxin, dermal fillers, chemical peels, and lasers.

Ms. Terushkin graduated from Brooklyn College with a Bachelor of Arts in Finance and Management.  She then went on to earn her master’s in physician assistant studies from York College of Queens, New York.

As a dermatology physician assistant, Yelena takes great pride in providing high quality superior patient-centered care. She loves spending the extra time getting to know her patients, and receives great satisfaction helping patients achieve health and improved self-confidence. 



Dr. Michael Gladstein, MD

Dr. Michael Gladstein is a board certified dermatologist; he completed medical school at NYU and completed his residency at New York University Medical Center. With almost 3 decades of experience he serves Brooklyn, Queens, and greater NYC. He strives to be very thorough when examining patients using modern equipment to get the job done. As a Castle Connelly Top Doctor, Dr. Gladstein works to create a sense of comfort and understanding. He answers his patients’ questions and explains everything in detail. A well-rounded New Yorker, Dr. Gladstein loves playing the saxophone in his time off, as well as gardening and bicycling. He looks forward to serving you.