Dr. Michael SiegalMD, PhD
Internal Medicine
at Dr. Michael Siegal / Castle Connolly Private Health Partners — Manhattan, NY
About
Michael Siegal, MD, PhD brings more than 20 years of Manhattan-based practice to his work in Internal Medicine and Cardiology. He holds board certifications in both specialties and earned his MD and PhD from the College of Physicians and Surgeons at Columbia University. His doctoral research focused on Pharmacology and Cardiac Electrophysiology. Before medical school, he studied Chemistry and Physics at Harvard College.
Dr. Siegal built a multi-faceted career that spans clinical practice, healthcare administration, and medical communications. He has served as a Hospital Division and Department Chair, a Hospital Medical Director, and an HMO Medical Director. Since 1999, he has worked as a medical communications consultant with Ogilvy CommonHealth Worldwide, a WPP affiliate. An early adopter of the membership-based model, Dr. Siegal has long prioritized the kind of unhurried, relationship-centered care that lets him focus on prevention and long-term wellness for each patient.
Education & Training
Undergraduate
Harvard College, Chemistry and Physics
Medical School
College of Physicians and Surgeons, Columbia University
Additional Training
PhD in Pharmacology and Cardiac Electrophysiology, College of Physicians and Surgeons, Columbia University
Certifications
Conditions Treated
Who is Dr. Siegal right for?
Dr. Siegal is an excellent fit for adults who want a physician with deep cardiovascular expertise guiding their primary care. Patients managing cardiovascular disease or cardiac electrophysiology disorders benefit directly from his specialist-level background. His preventive focus suits individuals who want to get ahead of health risks rather than react to them. The SENS wellness program makes his practice a strong match for patients ready to work on sleep, exercise, nutrition, or stress management with structured coaching support.
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Frequently Asked Questions
Dr. Siegal holds board certifications in both Internal Medicine and Cardiology. He brings over 20 years of Manhattan-based experience in these fields. His clinical focus spans preventive care, cardiovascular disease, and cardiac electrophysiology disorders.
Yes. Dr. Siegal holds board certifications in Internal Medicine and Cardiology. He earned both his MD and his PhD in Pharmacology and Cardiac Electrophysiology from the College of Physicians and Surgeons at Columbia University.
Dr. Siegal completed both his MD and his doctoral degree at the College of Physicians and Surgeons, Columbia University. His PhD focused on Pharmacology and Cardiac Electrophysiology. He earned his undergraduate degree in Chemistry and Physics at Harvard College.
Dr. Siegal treats a broad range of adult health concerns through his Internal Medicine and Cardiology training. He has particular expertise in cardiovascular disease and cardiac electrophysiology disorders. His preventive approach means he also works proactively with patients on metabolic health, nutrition, sleep, and stress.
Dr. Siegal centers his practice on wellness and prevention. He believes that building a strong, ongoing relationship with each patient leads to better outcomes. Extended visit times and direct 24/7 access let him understand each patient's full health picture rather than addressing isolated symptoms.
Yes. Dr. Siegal has served as a Hospital Division and Department Chair, a Hospital Medical Director, and an HMO Medical Director. Since 1999, he has also worked as a medical communications consultant with Ogilvy CommonHealth Worldwide, a WPP affiliate. This background gives him a broad perspective on how healthcare systems work.
Dr. Siegal adopted the membership-based model early in his career. He has practiced in Manhattan for over 20 years, refining a care model built around direct access, preventive focus, and unhurried visits.
Yes. Dr. Siegal uses Spruce, a secure and HIPAA-compliant platform, to conduct telehealth visits. Members can connect from a phone, tablet, or computer. This platform also supports direct messaging between visits.
Doctor profile last updated April 10, 2026