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Board Certified in Internal Medicine, Primary Care & Nephrology in Borough Park, Brooklyn, NY

About
Jonathan S. Leibowitz, MD

Dr. Jonathan Leibowitz is a dedicated Primary Care doctor based in Brooklyn, NY, who is triple Board Certified in Internal Medicine, Nephrology, and Lifestyle Medicine. With over 30 years of experience, he combines his advanced training in traditional medicine with a nuanced alternative approach.

Dr. Leibowitz earned his medical degree from SUNY Downstate Medical Center and completed training in Internal Medicine and Nephrology at the prestigious Icahn School of Medicine at Mount Sinai. He further advanced his expertise through training in acupuncture, nutrition, meditation, and breathing techniques. He is affiliated with Maimonides Medical Center in Brooklyn.

Passionate about advancing medical knowledge, Dr. Leibowitz actively engages in research initiatives, hosts medical students, and contributes to publications on Nephrology, Nutrition, and Covid-19. His practice offers a wide range of services, including EKG, Pulmonary Function tests, ear wax removal, pre-surgery checkups, cancer screenings, vaccinations, annual physicals and of course, sick visits.

Welcoming New Patients

Committed to patient-centered care, Dr. Leibowitz stays up-to-date with the latest advancements in medicine. He provides comprehensive, evidence-based treatments while ensuring patients feel heard, respected, and actively involved in their healthcare decisions. He has earned the prestigious NCQH recognitions in Delivering High Quality Diabetes Care and as a Patient Centered Medical Home.

Choose Dr. Jonathan Leibowitz as your Primary Care doctor for expert care, compassion, and a personalized approach that prioritizes your well-being.

Please note that stimulants and narcotics are not prescribed in this practice.

Testimonials

EXCELLENT
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Based on 622 reviews
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Marzena Wiszniewska profile picture
Marzena Wiszniewska
5 June 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
I almost didn’t want to write this review publicly because I was afraid too many people would discover Dr. Jonathan Leibovitz and suddenly I’d have to wait in giant lines forever 😂 But honestly… he deserves it. Dr. Leibovitz actually LISTENS. Even when I’m probably being annoying, overthinking everything, asking 47 questions, and acting like Google Medical School graduated me with honors — he still stays patient, funny, and somehow manages to guide me toward the right decisions every time. He has a great sense of humor, which makes appointments feel way less stressful, and I never feel rushed. Also, the wait time is surprisingly short, which in the medical world feels almost supernatural. The entire front desk staff is also incredibly kind and welcoming. You can tell the office is well run and that people actually care. Only warning: parking can be hard to find, so prepare mentally and maybe leave a little earlier 😅
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Nedjma Boudellal profile picture
Nedjma Boudellal
9 May 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Dr. Leiboitz and his staff are honestly the dream team of healthcare. From the moment you walk in, everything runs so smoothly it feels effortless and well organized. No long waits, no confusion -just a well-run office where things actually happen on time (rare these days). 🎩 Dr. Leiboitz is an excellent physician who is consistently professional, attentive, and genuinely dedicated to his patients’ well-being. He takes the time to listen carefully, explains everything clearly, and makes sure you feel comfortable and informed during every visit. His approach is both knowledgeable and compassionate, which makes a real difference in the quality of care. I would also like to acknowledge his wife, who is equally kind, welcoming, and supportive. Together, they create a warm and respectful environment that reflects true care for their patients. I highly recommend Dr. Leiboitz and his practice to anyone looking for a trustworthy and caring primary care physician.
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Andrew Klotz profile picture
Andrew Klotz
7 May 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Very patient ,attentive and down to earth.Instilled confidence, Staff was friendly making the whole experiece comforting Highly recommend
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Yesenia Arevalo profile picture
Yesenia Arevalo
20 April 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Great staff and especially excellent Doctor goes above and beyond for his patients and has great sense of humor.
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Sharon Judkovitz profile picture
Sharon Judkovitz
31 March 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Wonderful doctor as well as his assistants and front desk
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Bonsec 24 profile picture
Bonsec 24
21 March 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
I had no wait time. Was attended to immediately. The medical team was efficient. Am very satisfied with the service so far.
Posted on Google Google
CRUZ IRIZARRY profile picture
CRUZ IRIZARRY
19 March 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Doctor leibowwitz is a great doctor he takes care of all his patients very well, he's taking care of me.My sugar has gone down tremendously.He knows what he's doing, and he's funny. I recommend him highly and great staff all around .
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AMAl MOHAMMED profile picture
AMAl MOHAMMED
25 February 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
I've been a patient of Dr. Jonathan S. Leibowitz for nearly four years, and my experience has been nothing short of outstanding. He genuinely listens to my concerns and makes sure I feel comfortable during every visit. When I faced a challenging health issue, He was incredibly supportive and guided me through every step. Thanks to your treatment, I feel healthier and more confident in managing my health. I highly recommend Dr. Jonathan S. Leibowitz to anyone looking for a compassionate skilled professional and knowledgeable physician. . The office staff is always friendly and accommodating, which makes each visit pleasant Thank you, Dr. Jonathan S. Leibowitz, for your dedication to your patients.
Posted on Google Google
Albert Chow profile picture
Albert Chow
18 February 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Dr. Leibowitz is professional and knowledgeable. It is always a pleasure seeing him for care.
Posted on Google Google
Esmeralda Ziu profile picture
Esmeralda Ziu
31 January 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Amazing doctor—kind, attentive, and truly cares about patients. Highly recommend Dr. Johnathan!

Why Choose Our Practice

What sets Dr. Leibowitz apart is his unique perspective gained from his personal battle with Bone Cancer. Having undergone major surgeries and grueling chemotherapy, he deeply empathizes with the challenges and emotions of a medical journey. This firsthand experience enables him to provide compassionate care rooted in genuine understanding.

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