Welcome to the Practice 

Dr. Len Horovitz is a nationally recognized internist and pulmonary specialist in private practice in Manhattan. He is on staff at Lenox Hill Hospital (part of Northwell) and Weill Cornell Hospital (part of NY-Presbyterian) and is a Clinical Instructor in Medicine at Weill Cornell Medical College. His approach is to prevent illness whenever possible by detecting and treating problems early.

We offer services like onsite diagnostic treatment, pulmonary treatment, physical exams, EKG, chest X-ray, heart disease treatment and much more.

Using the latest diagnostic methods, Dr. Horovitz has achieved a very low rate of hospitalization for his patients. "There are no shortcuts to excellent patient care: it takes time, focus and commitment."

Dr. Horovitz takes a complete medical history before performing a thorough annual physical examination (including EKG, chest X-ray, pulmonary function test, skin check, blood tests, and many other diagnostics) in his Manhattan office. He conducts every test himself. He works face to face with patients who do not have to use tablets and does not type while speaking with his patients.

Dr. Horovitz is featured in:
The New York Times' Super Doctors
New York Magazine's Best Doctors in New York
U.S. News' Top Doctors
Vital's Most Compassionate Doctor and
Castle-Connolly's Top Doctors.
Who's Who named him Pulmonary Professional of the Year.

As a medical commentator, Dr. Horovitz appears frequently on national news and health networks, giving expert advice on preventive care and wellness, as well as asthma, emphysema, COPD, flu, smoking cessation and obesity. His comments on the latest medical literature are carried on the major news networks and @DrLenHorovitz.

Dr. Horovitz is also the Director of Carnegie Medical PC and treats professional performers at Carnegie Hall, The MET OPERA, and on Broadway. He is an author of the medical anthology, "The Singer's Guide to Complete Health" (Oxford University Press, 2013).


Len Horovitz MD

"Many illnesses can be prevented and most can be successfully treated if they're detected early.  That's how I help my patients stay well and reduce hospitalization rates. There are no shortcuts to excellent patient care."

Learn more about the doctor  here.




Dr. Horovitz is board-certified in both Internal Medicine and Pulmonology. He graduated from Brown University (Phi Beta Kappa and summa cum laude) and from New York University School of Medicine. He completed a Pediatric residency at Mount Sinai Hospital (NYC), followed by a residency in Internal Medicine and a sub-specialty in Pulmonary Medicine at Lenox Hill Hospital (NYC) where he is also on staff.

“LIVE WITH CARNEGIE HALL” presents Dr. Len Horovitz performing Liszt’s Concert Etude “Forest Murmurs"

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Office Hours


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm





Patient Testimonials