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Jonathan S. Lown, MD

Internal Medicine
2171 Jericho Turnpike Suite 100
Commack, NY 11725 Get Directions
631.343.7242
Jonathan S. Lown, MD
More information available

Annual Membership Fee

495.00 every 3 months *
990.00 every 6 months *
1,980.00 each year *
*The lab portion of the annual MDVIP Wellness Program will be billed to patients directly by the lab company at the discounted rate of $70.

My Philosophy and Approach to Wellness...

As an Internist, I have developed a deep understanding of wellness and long-term healthcare. My approach focuses on helping patients live better and longer lives through both acute and preventive care. I give every patient personal advice and support in a relaxed and unrushed manner. I utilize the latest advancements in medicine and knowledge of the latest discoveries in medical research and wellness screenings to help identify risk for disease and prevent it or treat it early. It is also important to me to foster and promote optimism and good humor, which are also important elements in the healing process and staying well. 

I focus on primary care, internal medicine, cardiovascular health, preventive medicine and women’s health. In addition, I am board certified in sleep medicine and am able to treat sleep-related illnesses, such as obstructive sleep apnea and insomnia while providing guidance on CPAP management. By promoting physical and mental well-being and coaching healthier lifestyle choices, I help empower my patients to live the best life possible. I also offer conveniences, like same- or next-day appointments that start on time, which may be found in concierge medicine practices. 

My private primary care practice currently serves all of Long Island, New York. My office is conveniently located in Commack, which is easily accessible from Eastern Nassau County and Western Suffolk County. I am affiliated with St. Catherine of Siena Medical Center in Smithtown, New York. I speak fluent English and Spanish.
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Dr. Lown's Credentials

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Residency:
Columbia Presbyterian Medical Center
New York, NY
1995-1998

Internship:
Columbia Presbyterian Medical Center
New York, NY
1995-1998

Medical School:
State University of New York - Downstate
Downstate, NY
Doctorate of Medicine 1995
Magna Cum Laude

Undergraduate:
State University of New York - Plattsburgh
Plattsburgh, NY
Bachelor of Science, Biology 1987

Diplomate in Internal Medicine, American Board of Internal Medicine 1998-present
Diplomate in Sleep Medicine, American Board of Internal Medicine 2009-present
Diplomate of Clinical Lipidology, American Board of Clinical Lipidology 2006-present
St. Catherine of Siena
Spanish
Alpha Omega Alpha, Medical Honor Society
Professor/Clinical Preceptor, Stonybrook University Medical School 1995-present
Sasak, V., Lown, J., Colburn, K., Human Small Intestinal Apolopoprotein B-48 Oligaosaccharide Chains, Biochemical Journal 1991
High-affinity NGF binding requires co-expression of the trk prto-oncogene and the low Affinity NFG receptor, Nature 1991 (Acknowledgment)
American Academy of Sleep Medicine
American College of Physicians
American College of Chest Physicians
National Lipid Association
Suffolk County Medical Society
New York

Testimonials from patients of Dr. Lown

Personal relationship
from Joanne in NY April 8, 2024 for Jonathan S. Lown, MD

MDVIP has allowed me to have a trusted relationship with my physician, Dr Jonathan Lown. I have had an ongoing medical problem and it has been a relief to get a same day appointment and to discuss treatment prescribed by other doctors. He has been there for me and I appreciate it.

Dr. Jonathan Lown Rave Review
from Gary in NY January 20, 2024 for Jonathan S. Lown, MD

Hello
I am so pleased to be able to share my thoughts about Dr Jonathan Lown, my MDVIP primary care doctor in Commack, NY.
I have been exceptionally pleased with every aspect of Dr Lown's practice, especially of course dealing directly with Dr Lown.

Some specifics will be helpful. My prior annual physical exams used to take literally 15-20 minutes and I spent more time… See more

Best damn Doctor.
from Robert in NY January 19, 2024 for Jonathan S. Lown, MD

I have been with Dr Lown for over 20 years . My wife ,mother and mother in law were all patients. All I can say is that this man always finds time for my family wonderful doctor extremely knowledgeable and a good friend. Thank you Dr Lown for being my doctor.

Life Saver
from Charles in NY January 18, 2024 for Jonathan S. Lown, MD

DR. Lown has saved my life three times. Thru his tests and care in the last few years I have avoided death. I cannot say enough about his love and care for others, Thank you DR. Lown. You are loved by me and my wife Maryann.

Could not live without him....
from Maxine in NY December 15, 2020 for Jonathan S. Lown, MD

Dr. Lown never fails my husband or myself. We have been with him for 17 years. Besides being brilliant, he is compassionate. He is a doctor that take the time to understand our needs. Understands the patient. No matter what we have been thru, he is always at the end of the phone explaining what to do. Besides the fact that life is so more difficult, I do feel better that Dr. Lown is the doctor… See more

Dr. Lown really is the best!
from Greg in NY March 5, 2018 for Jonathan S. Lown, MD
User submitted photo

As a health insurance broker, I hear clients tell me all the time that their doctor is the best! Well Im convinced that Dr. Lown really is the best! Ive been under his care for quite some time, and am convinced that Im getting healthier as I get older!

I trust you completely.
from Betty in NY March 5, 2018 for Jonathan S. Lown, MD

Words cannot discribe what I feel of you as my physician.
You are always there for us no matter what day it is? What time it is.
I trust you completely.
Your knowledge of medicine is unbelievable and I am honored to have you as my doctor.

thanks to Dr. Lown.
from Kathleen in NY March 2, 2018 for Jonathan S. Lown, MD
User submitted photo

I was a patient of Dr. Lown when during an emergency visit to the hospital I received a cat scan. Dr. Lown noticed a spot unrelated to the problem I had and said I needed it to be checked out. It was pancreatic cancer which was caught in time. That was 6 years ago. I am cancer free and a pancreatic cancer survivor thanks to Dr. Lown.

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