Leading Experts include Council Members from GLG Member Programs. The Gerson Lehrman Group® (GLG) LeaderSM Program is our premium Member ProgramSM. Those identified as GLG Leaders are in the top 5% of GLG CouncilRank and have an exclusivity agreement with GLG.
Kelly ClosePresident
Close Concerns![]()
Kelly Close is President of Close Concerns, a healthcare information firm focused exclusively on diabetes and obesity. She has over 15 years of experience at the intersection of finance and healthcare. Ms. Close specializes in financial analysis within...
Medical Director
Pathology Lab of Georgia ![]()
John Cochran, MD, is the Founder and Chief Executive Officer of Chestatee Pathology Associates in Atlanta, GA, since 2000. Dr. Cochran is Medical Director of two Atlanta-area hospital laboratories and founded the first independent podiatric pathology...
Research Director
COMMUNITY RESEARCH INITIATIVE OF NEW ENGLAND INC![]()
Calvin Cohen, MD, MS, is Research Director at Community Research Initiative (CRI) of New England, a nonprofit organization he co-founded that focuses on HIV clinical research. He is also a member of the faculty of Harvard Medical School and Research Director...
CEO
MAJOR MEDICAL SUPPLY LLC![]()
Douglas Coleman is CEO of Major Medical Supply, LLC, in Colorado. He has 20 years of experience in the durable medical equipment (DME) industry. Mr. Coleman grew a start up firm to over $6 million in revenue and in 1994 sold the business to what is now...
Paul CorsiPartner and Obstetrician Gynecologist
Associated Obstetrics and Gynecology![]()
Paul Corsi, MD, is a board-certified Obstetrician Gynecologist at Associated Obstetrics and Gynecology in Michigan. His interests include gynecological surgical operations, infertility, and treatment of many gynecological problems, including endometriosis...
Project Manager
Oberender & Partner![]()
Patrick Da-Cruz is a Project Manager at Oberender and Partner, part of Economedic AG, Germany. Previously, Mr. Da-Cruz has worked in different positions at Ratiopharm, including corporate development and corporate purchasing. He has worked for over four...
Senior Industry Analyst
FROST & SULLIVAN, INC![]()
Nadim Daher is a Senior Industry Analyst with the Frost & Sullivan North American Healthcare Practice. He focuses on monitoring and analyzing emerging trends, technologies and market dynamics in the medical imaging industry in North America, also fulfilling...
Andrew DahlPresident
Ophthalmology Consultants![]()
Andrew Dahl, MD, FACS, FAAO, is the President of Ophthalmology Consultants in New York. He was also Principal Investigator for Hudson Valley Eye Research Foundation and has conducted numerous clinical trials. Dr. Dahl is a board-certified Ophthalmologist/Ophthalmic...
Head of Sleep Medicine
Montpellier University Hospital Center![]()
Yves Dauvilliers, MD, is Division Head of Sleep Medicine at the University Hospital of Montpellier, France. Dr. Dauvilliers has expertise in the treatment of all sleep disorders. His basic research interests, using electrophysiological and genetic techniques,...
Partner
MINNESOTA EYE CONSULTANTS PA![]()
Elizabeth Davis, MD, FACS, is Clinical Assistant Professor of Ophthalmology at the University of Minnesota. Dr. Davis is also Partner and Medical Director of the Surgery Center at Minnesota Eye Consultants. She is fellowship trained in corneal, cataract,...
Steve DavisDirector of Radiology
CLARENDON MEMORIAL HOSPITAL INC![]()
Steve Davis, RT (R), is the Director of Radiology at Clarendon Memorial Hospital in South Carolina. He is a Certified Radiology Administrator and has experience in contract negotiation for all types of hospital equipment. His technological expertise has...
Co-Owner
Home Dialysis Therapies of San Diego![]()
Larry Day is President of Dialysis Management, Inc. and Co-Owner of the Home Dialysis Therapies of San Diego and Quality Renal Care in Elgin IL. He is an expert in the area of dialysis and nephrology business management and patient services. Mr. Day specializes...
Vincent de LuiseAssistant Clinical Professor of Ophthalmology
Yale University - CC![]()
Vincent de Luise, MD, FACS, is an Assistant Clinical Professor of Ophthalmology at Yale University and University of Connecticut, with expertise and clinical research in cataract surgery, laser eye surgery, dry eye disease, laser vision correction, glaucoma,...
Director of Sales
FROST & SULLIVAN, INC![]()
Nicolas Debort is the Director of Sales at Frost & Sullivan Healthcare Practice in Europe and Africa. He leads a team of 15 sales associates across Europe and India. Over the past years, Mr. Debort has been involved in various research and consulting...
Assistant Professor of Surgery
MOUNT SINAI SCHOOL OF MEDICINE![]()
George Deitrick, MD, is the Director of Wound Healing Program and an Attending Surgeon at the James J. Peters VA Medical Center in the Bronx, New York. He is a General Surgeon and Spinal Cord Injury Physician and was an Assistant Professor of Surgery...
Michael DempseyMedical Director
Johns Hopkins Diabetes Center at Suburban Hospital![]()
Michael Dempsey, MD, is a Private Practitioner in Rockville, Maryland. Dr. Dempsey is the Medical Director of the Johns Hopkins Diabetes Center at Suburban Hospital, where he is also the Medical Director of Diabetes Education. He is active in physician...
Keith DenklerClinical Professor of Plastic Surgery
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO![]()
Keith Denkler, MD, is a Plastic Surgeon in private practice in Marin County, California. Dr. Denkler is board certified in Plastic, Cosmetic and Reconstructive Surgery. He also serves as a Clinical Professor of Plastic Surgery at University of California,...
Robert DevenyiProfessor and Chief of Ophthalmology
UNIVERSITY OF TORONTO![]()
Robert Devenyi, MD, MBA, FRCSC, FACS, is a Professor of Ophthalmology and Vision Sciences at The University of Toronto, Canada. Dr. Devenyi is the Director of the Donald K. Johnson Eye Center, Director of Retinal Services at University Health Network...
Sunil DhawanClinical Assistant Professor of Dermatology
LELAND STANFORD JUNIOR UNIVERSITY![]()
Sunil Dhawan, MD, is a Clinical Assistant Professor of Dermatology at Stanford University. He has expertise in clinical dermatology including acne, rosacea, psoriasis, eczema, skin cancer, onychomycosis, actinic keratosis, lasers, fillers, cosmetic dermatology,...
Rheumatologist
San Diego Arthritis Medical Clinic![]()
Ara Dikranian, MD, is a Rheumatologist at the San Diego Arthritis Medical Clinic, a single-specialty private practice in San Diego, California. Dr. Dikranian was board certified in rheumatology in 2000. He completed his medical school at the University...