Our Doctors

Meet our team of experienced and dedicated medical professionals committed to providing exceptional care.

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Dr. Sofya Kleyn, MD

Internal Medicine / Geriatrics

33 years experience

Dr. Sofya Kleyn specializes in both conventional and alternative therapies for a wide range of medical conditions, focusing on preventing and reversing disease before it becomes chronic. She integrates lifestyle interventions with emerging alternative treatments to support healing while minimizing unnecessary risks.

English, Russian, Spanish (medical proficiency)
New York, NY
Telehealth available
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Dr. Ilya Kleyn, MD

Internal Medicine, Geriatrics, Functional Medicine

33 years experience

Dr. Ilya Kleyn integrates traditional internal medicine with functional and alternative therapies. He emphasizes balanced nutrition, liver detoxification, and natural healing to manage conditions like high cholesterol, diabetes, and obesity through individualized, non-invasive treatments.

English, Spanish, Russian, Turkish
New York, NY
Telehealth available
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Dr. Leonid Tafler, DO

Family Medicine / Osteopathy

28 years experience

Dr. Leonid Tafler is a board-certified family medicine physician and osteopath with 28 years of experience. He is known for his expertise in managing muscle spasms and providing comprehensive family care.

English, Russian
Brooklyn, NY
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Doris Yu, RPA

Physician Assistant

5 years experience

Doris Yu is a compassionate and skilled Physician Assistant with a Master of Science in Physician Assistant Studies from South University. She has gained broad clinical experience across internal medicine, primary care, OB/GYN, and emergency medicine.

English, Chinese, Spanish
New York, NY