Harmony Leighton-Seiffer, D.O., FACC

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4.8 out of 5 

"I treat all of my patients like family. I believe in joint decision making and educating my patients to empower them in their health journey."

Accepting New Patients: 

Harmony Leighton-Seiffer, D.O., FACC, is a non-invasive cardiologist with a wealth of experience in both outpatient and inpatient care, including critical care management. Dr. Seiffer's unwavering commitment to patient well-being and her innate passion for making a meaningful impact on lives have been driving forces behind her remarkable journey in healthcare.

Dr. Seiffer’s dedication to ensuring optimal patient outcomes is bolstered by her embrace of the latest advancements in the field, enabling her not only to provide expert treatment but also to empower patients through proactive preventive care—a role she finds exceptionally gratifying.

Dr. Leighton-Seiffer earned her Doctor of Osteopathic Medicine degree New York College of Osteopathic Medicine. She completed her residency and cardiology fellowship at the New York-Presbyterian Queens. She is board certified by the American Board of Internal Medicine in Cardiovascular Disease and Adult Echocardiography.

Her areas of expertise encompass a comprehensive spectrum, including but not limited to preventative cardiology, women's cardiovascular health, coronary artery disease, heart failure, and arrhythmia management. Dr. Leighton-Seiffer's holistic approach to patient care ensures that each individual's unique needs are met with the highest standard of care.

Featured Reviews



Best doctor i've ever known and i'm 80 years old !!!

   — Stanley Umowski


My experience with Doctor Seiffer was very positive. She is very knowledgeable but more than that approachable, which has helped me develop a very strong Doctor/Patient relationship. I was very comfortable asking her questions and discussing my concerns. She was excellent in addressing both! I felt heard and understood. If you are looking for a Cardiologist, I highly recommend Dr. Harmony Leighton-Seiffer.

   — Robin Wetzel


Dr. Leighton is always highly professional, knowledgeable, and excellent listener. She takes the time to listen and answer questions. I feel highly comfortable asking her questions about my health, medicines, etc., and am satisfied with her answers. Based on my experience as a patient and Dr. Leighton's qualifications and practice, I very strongly recommend her.

   — Riasat Mobashar


Great doctor straight talking, very compassionate

   — Carl Haycock


This was my first visit to Dr. Leighton, I moved and I was looking for a nearby doctor. The check-in was easy and the personnel was kind. The doctor reviewed my medical history with care and was very polite.

   — R. Vecchi


Dr.Seiffer is a caring, knowledgeable,sincere individual. She tells it, like it is. I would recommend her services to anyone in need. Mark Cantor

   — Mark Cantor