Harry Jacob, MD

Harry Jacob, MD

Internal Medicine


2800 Marcus Ave, New Hyde Park, NY, 11040



new-patients Accepting new patients
videovisits Video visits available

“Listen to the patient; he/she is telling you the diagnosis.” - William Osler

Known for his expert diagnostic skills, Dr. Harry Jacob, practicing Internist and President, Primary PartnerCare Physicians, PLLC, truly loves being a primary care physician and the privilege of caring for his patients. As a Northwell clinical instructor for medical residents for over 30 years, Dr Jacob teaches not only clinical medicine and investigative diagnostic skills, but the joy and privilege of being a physician and sharing so many people’s life journeys in a personal and impactful way. He models his practice style after the teachings of Sir William Osler, the “father of primary care” who emphasized the importance of treating the whole person not just the disease to effectively promote health and heal patients.


When asked why he loves being a doctor, Dr. Jacob describes the variety and complexities of conditions he treats and the lifetime relationships with his patients and their families. His patients describe him as being warm, friendly, caring, humorous, and brilliant when finding diagnoses missed by other physicians.


Dr. Jacob has been married to his wife and business partner, Marion, for 15 years and has three adult children. Dr Jacob is an avid golfer and enjoys exercising as a way to decrease stress and increase energy. He enjoys traveling and discovering new adventures, especially with his family; his favorite vacation spot is Cabo San Lucas.

Training & Credentials


Medical School: SUNY Upstate Medical University (New York)
Internship: Long Island Jewish Medical (New York)
Residency: Long Island Jewish Medical (New York)

Advanced Degree

Medical Doctor

Board Certification & Accreditations

Board Certified, Internal Medicine
American Board of Internal Medicine

Medical Interests

Preventive Medicine/Healthy Aging
Heart Disease
Annual Physicals & Wellness Visits
Complex Medical Conditions
Sports Medicine
Alzheimer’s & Dementia
Weight Management

Insurances Accepted
We accept Medicare and most forms of insurance, please call (516) 233-2484 or the physician's office for more information.
Patient Testimonials
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My whole family are patients of Dr. Harry Jacob as well as my grandparents many years ago. I know Dr. Jacob since I was in my early teens. He is an amazing doctor who truly cares about his patients. Now our children are patients of his. He never makes you wait in the office. I consider Dr. Jacob like family to us.
The Lavore Family. Verified Patient
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I have been a patient of Dr Jacob for over 30 years. He saved my life and helped diagnose my husband and a find a cure when no one else could. The cardiologist said because of Dr Jacob, my husband lived three years longer than predicted. He is a straight shooter and someone you can speak with easily. He is the most compassionate doctor that I know. He even attended my friend's funeral, another long term patient that died of cancer. If you are looking for a smart, caring doctor, look no more.
Kathryn. Verified Patient
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Dr. Jacob and his absolutely caring and lovely staff - are completely vested in your care - He listens - is a no-nonsense doctor who diagnosis the issues, does not order unnecessary tests and practices real medicine. His staff - Cathy and Julie are amazing kind, caring and compassionate human beings. I am blessed to have found him as my physician.
Sarah. Verified Patient
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Dr Harry is just simply the best. He listens to you. I mean really listens. He cares about your well being. I am very blessed to have him as my doctor for over 25 years. I told him
Erin. Verified Patient
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Dr Jacob saved my parents with his genuine caring and diagnostic skills. He is patient and kind with a NY sense of humor that my dad found refreshing. He remembered all of his stories on the next visit which always amazed me. When dad went to the hospital, Dr Jacob checked in on him and made sure the hospital doctor knew my dad's history. Thank you Dr Jacob.
Anonymous. Verified Patient

Providers & Patient Care Team at Same Care Center

Billie Xia, MD

Billie Xia, MD

Marc Singer, MD, FACC

Marc Singer, MD, FACC