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Clinical Team

The Life Line Screening Clinical team consists of board-certified physicians committed to delivering accuracy and quality to our customers.

Clinical Team

The Clinical Management team works hard to ensure the highest level of quality control throughout our process. Our board-certified, licensed reviewing physicians then review the results before they are sent to you.

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Dr. Andy Manganaro, MD, FACS, FACC, Chief Medical Officer Emeritus

Dr. Manganaro began his tenure at Life Line Screening as a physician reviewer in 2000. His commitment to the company’s overall mission motivated him to take a larger role and in 2005 he became the medical director, overseeing all aspects of clinical quality and development of clinical protocols. He now serves as CMO Emeritus.

During his tenure, Dr. Manganaro directed Life Line Screening’s research collaborations and analysis of its unique database of more than 8 million customers. This research shed new light on vascular disease and vascular screening, with a recent paper on abdominal aortic aneurysm screening hailed as “groundbreaking” by those in the vascular community.

Dr. Manganaro practiced vascular and cardiothoracic surgeon for more than 25 years and cared for more than 10,000 patients with vascular disease, performing more than 5,000 vascular surgeries of every kind. Dr. Manganaro has been a tenured surgeon for more than 20 years at Kettering Hospital and is on the Governing Board of the Kettering Cardiovascular Institute of Kettering Medical Center. 

Dr. Manganaro graduated medical school from New York University School of Medicine. He graduated Cum Laude and Phi Beta Kappa with a bachelor’s degree from Fordham University. 

William Zinn, MD

Current position: Radiologist at Virtual Radiologic

Education: MD, N.Y.U; BA in Chemistry, Duke University

Professional organizations: Board certified and a member of the ACR (American College of Radiology), Neuroradiologist

Stephen Torpy, MD

Current position: Private Practitioner

Education: BS in Medicine; MD from the University of Nebraska

Professional Organizations: American Board of Surgery, Alpha Omega Alpha Medical Honor Society, Fellow American College of Surgeons, Midwest Clinical Society, American College of Phlebology

Sheridan Gibler, MD, MRO

Current position: Board Certified Cardiologist

Education: University of Texas, Southwestern Medical School

Professional organizations: Associate Member –American College of Cardiology

Phillip Charles Corcoran, MD

Current position: Cardiothoracic Surgeon at Suburban Hospital

Education: Georgetown University School of Medicine

Paul Alexander Mazur, MD

Current position: Cardiothoracic Surgeon at Cardiothoracic Surgical Associates, Inc., Oceanside, CA

Education: Temple University, PA

Lisa Marie Sheppard, MD

Current position: Reader of all imaging modalities (including MRI, CT, ultrasound, densitometry, mammography, and x-ray) for several imaging centers

Education: BS in Physics from St. Joseph’s University; MD from the Jefferson Medical College; Certificate of Added Qualifications (CAQ) in Neuroradiology; Certificate in Densitometry

Professional organizations: American College of Radiology, American Society of Neuroradiology, American Roentgen Ray Society, Radiologic Society of North America, International Society for Clinical Densitometry

J. Robert Thompson, MD, DABR

Current position: Board Certified Radiologist. Medical Imaging and Health Screening Consultant with more than 40 years experience in the practice of Clinical Radiology.

Education: BA from Northwestern University; MD from Northwestern University Medical School

Professional organizations: Evans Army Community Hospital

Guy Lemire, MD, FRCS -C, FACS (THOR)

Current positions: Surgeon/Staff Member of Long Beach Memorial Medical Center, Orange Coast Memorial Medical Center, Los Alamitos Medical Center, Lakewood Regional Medical Center, Enloe Hospital, Shasta Regional Medical Center
Education: MD from Laval University, Post-graduate at University of Toronto and McGill University

Professional organizations: Royal College of Physicians and Surgeons of Canada, American College of Surgeons, California Medical Association, Society of Thoracic Surgeons

Glenn Pierce Gardner, MD, RVT, FACS

Current positions: Practitioner with the University of Missouri Health Care in the Department of Surgery; Board-certified in both general surgery and vascular surgery

Education: BA in Biology; MD from Indiana University

Professional organizations: Society for Vascular Surgery, American Association for Vascular Surgery, Midwestern Vascular Surgery Society, Peripheral Vascular Surgical Society

Devin Friedlander, MD

Current position: Board Certified Neurologist

Years practicing: Joined Life Line Screening July 2012

Education: Robert Wood Johnson Medical School, Piscataway, NJ

Benjamin Gerson, MD-Laboratory Director

Current position: Clinical Professor of Pathology and Cellular Biology, Medical Director – University Services

Past Positions: Former Chairman of the Clinical Devices Panel for the FDA, faculty of the Harvard Medical School, Professor of Pathology and Pharmacology,  Clinical Professor of Occupational Medicine, Director of Laboratory of Analytical Toxicology at Boston University School of Medicine, Director of Clinical Laboratory at Premier Research Worldwide, and Director at BIEX Clinical Laboratory

Education: Jefferson Medical College

Trained: Johns Hopkins Hospital and Johns Hopkins University School of Medicine


Explore Other Life Line Screening Teams

Read more about the expertise of our Board of Directors and Executive Team Members.