Mortimer J. Strong, DO

Mortimer J. Strong, DO

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Medical School
Philadelphia College of osteopathic medicine

Board Certification
American Board of Internal Medicine

Specialties & Interests
Geriatric medicine
Complex medical management issues
Hypertension diabetes hyperlipidemia and their complications.

Undergraduate School
City University of New York at Brooklyn College

Primary Care Doctor in Philadelphia, PA

I was born and raised in Brooklyn New York. My father and both older brothers are/were physicians. My oldest brother was the founder of the “Breast Health Plan of New York” and was a pioneer in minimally invasive breast cancer surgery.

I wanted to be a physician since childhood and love the practice of internal medicine. I consider it “the thinking man’s game.” One of my goals is to help patients define themselves by their hopes, dreams, passions and desires rather than by their medical illnesses.

I am the medical director of a long-term nursing and rehabilitation facility in Philadelphia.

I enjoy my patients and have long-standing devoted relationships with many of them.

I have been married 43 years to my delightful wife Sharon and have two grown children one a pediatrician/geneticist and the other a lawyer.

I enjoy the beach, swimming, physical fitness as well as Talmudic and biblical studies.

Call to Schedule an Appointment with Dr. Strong!

(215) 440-8681

COVID-19 Vaccine

We are pleased to announce that NSIM is partnering with Centennial Pharmacy Services to administer COVID vaccine shots in our office. We have worked closely with Centennial Pharmacy Services for many years and they are a trusted partner.

We do not know when our first doses of vaccine will arrive nor do we know how many doses we will get on a weekly basis. The number of people who want the vaccine is far greater than the supply Philadelphia receives weekly from the federal government.  We are following the Philadelphia Health Department prioritization phases in administering the vaccine. We anticipate it will take at least until the end of May or longer before the city has vaccinated all people over 65, those with chronic medical conditions, and those working in occupations essential to our economy.

If you want to receive the vaccine in our office when we receive a supply:

Register your interest

You will complete and submit a questionnaire. The information you submit is confidential and the only people who have access to it are the staff of NSIM and Centennial Pharmacy. It will be used only for the purpose of COVID vaccine administration and not for any marketing purposes or sold to any other entity. Once we know that we are receiving the vaccine, you will be contacted about an appointment time by Centennial Pharmacy either by text message, email, or phone (depending on your contact preference).


If you have any concerns about the safety, effectiveness, rapidity of development or other issues regarding the COVID vaccines, please contact your primary care provider at NSIM.

Please be patient. No one will be truly safe until everyone in our country who desires the vaccine has received it.  Please continue to wear your mask when outside of your home, maintain social distance, wash your hands, and follow other guidelines from the health department and CDC. Once you receive the vaccine, you will need to strictly maintain these precautions at all times until our public health officials tell us otherwise.

Call us (215) 440-8681  | View COVID-19 Vaccine Registration Info