We built Summus to restore the connection between patients
and the collective wisdom of our medical community.
In this mission, we celebrate exceptional physicians and have deep respect for expertise developed from years of training and practical experience. For families, we transform an existing referral system that is highly inefficient and opaque with a personalized virtual healthcare experience that shortens the timeframe to access expertise across all health concerns.

We are a service-driven company that embraces those who have committed to excellence in medicine and enables people to speak with people to help solve important problems.
Founder & CEO
Julian Flannery
Julian previously served on the management team and was Managing Director, Global Research at Gerson Lehrman Group, the world's largest membership-based platform for professional expertise. He oversaw GLG's service operation, products, and content, and directed management of its 400,000+ expert membership base. He formerly worked at Morgan Stanley as Associate and Chief of Staff to the Chairman & CEO and in Special Situations and Investment Banking. In 2001, he served in The White House as an aide to the Chief of Staff to the President. He received his M.B.A. from Harvard Business School and B.A. in Economics from Duke University.
Founder & Chairman
Aftab Kherani, MD
Aftab is a Partner at Aisling Capital. Previously, he was an engagement manager at McKinsey & Company in the pharmaceutical, medical product, and private equity practices. Prior to McKinsey, Aftab was a Chief Resident in Surgery at Duke University Medical Center, and completed residency in general surgery. He completed a post-doctoral fellowship at Columbia University, College of Physicians & Surgeons as an organ procurement fellow. He received his M.D. from Duke University, and was a Howard Hughes Medical Institute research fellowship recipient. He earned his B.S. in Biology and A.B. in Economics from Duke, Magna Cum Laude, graduating Phi Beta Kappa.
Jennifer Kherani, MD, FACEP
Jennifer was previously an attending Emergency Medicine physician and Instructor of Medicine at New York-Presbyterian Hospital/ Weill Cornell Medical College. She served as Chief Resident in her final year of training at the combined program of Weill Cornell Medical College and Columbia University's College of Physicians and Surgeons. Dr. Kherani received her M.D. from the Duke University School of Medicine. She completed a year-long post-doctoral research fellowship at Columbia University and received her B.A. in neuroscience from Colgate University. Jennifer spent a pre-doctoral year at Columbia conducting cardiac physiology research in the laboratory of Dr. Mehmet Oz, Vice Chair of Surgery.
Medical Director
Mary Mulcare, MD
Mary is an attending Emergency Medicine physician at NewYork-Presbyterian/Weill Cornell Medical Center and an Assistant Professor of Clinical Emergency Medicine at Weill Cornell Medical College. She is the Director of Undergraduate Medical Education for the Department of Emergency Medicine, overseeing all medical student programs and teaching by the ED faculty and Assistant Program Director for the EM residency at NYPH, with an academic focus on developing the Business of Medicine curriculum. Mary completed her undergraduate education at Princeton University and medical degree from Columbia University College of Physicians and Surgeons. She served as Chief Resident, Emergency Medicine in her final year of training at NewYork-Presbyterian Hospital in the a combined program. She also completed a fellowship in Geriatric Emergency Medicine at Weill Cornell Medical Center.
Corporate Advisory Board
Dennis Purcell
Founder and Senior Advisor, Aisling Capital. Former Managing Director of Life Sciences investment banking at Chase Hambrecht & Quist.
Ayman Sabi
Founder and CEO, SABi Medical Group. Former CEO White House / Black Market and National Retail Group.
Keith Rabois
Partner, Khosla Ventures. Former Chief Operating Officer at Square. Executive Vice President at LinkedIn and PayPal. Investor in Yelp, YouTube, Palantir, AirBnB, and Quora.
Laura Waitz
Former Senior Managing Director and Global Head of Human Resources, The Blackstone Group.
Laurence Herman
General Counsel and Managing Director, Gerson Lehrman Group (GLG). Former Senior Vice President, Capital IQ.
Joshua Bilenker, MD
President and CEO, Loxo Oncology. Operating Partner, Aisling Capital. Former Medical Officer at the US Food & Drug Administration.
Robert Liander
Former Lead Database Architect, Capital IQ. Former CTO, Relationship Science.
Medical Advisory Board
Solomon Aronson, MD, MBA
  • Executive Vice Chair, Department of Anesthesiology
  • Professor of Anesthesiology
  • Director of Business Development, Duke Private Diagnostic Clinic
Duke University School of Medicine
John A. Chabot, MD, FACS
  • Chief, Division of Endocrine Surgery
  • Executive Director, Pancreas Center
  • Vice President, ColumbiaDoctors
  • Professor of Surgery
NewYork-Presbyterian Hospital, Columbia University Medical Center
Theodore Pappas, MD, FACS
  • Chief, General and Advanced Gastrointestinal Surgery
  • Vice Dean for Medical Affairs
  • Distinguished Professor of Surgical Innovation
Duke University School of Medicine
Robert N. Hotchkiss, MD
  • The Anne and Joel Ehrenkranz Chair, Hand and Upper Limb Research
  • Medical Director, Innovation
  • Medical Director, Clinical Research
Hospital for Special Surgery
Michael J. Zinner, MD, FACS
  • CEO and Executive Medical Director, Miami Cancer Institute
  • Moseley Professor of Surgery Emeritus, Harvard Medical School
Baptist Health South Florida
Robert S. Brown, Jr., MD, MPH
  • Director, Center for Liver Disease and Transplantation
  • Vice Chair, Transitions and Care
  • Interim Chief, Gastroenterology and Hepatology
  • Professor of Clinical Medicine
NewYork-Presbyterian Hospital, Weill Cornell Medical Center
Wayne Hellstrom, MD, FACS
  • Chief, Andrology
  • Professor of Urology
Tulane University School of Medicine
Helena Roung Chang, MD, PHD
  • Director, Revlon/UCLA Breast Center
  • Professor of Surgery
Ronald Reagan UCLA Medical Center
Dan G. Blazer, III, MD, FACS
  • Program Director, Hepatopancreatobiliary Fellowship
  • Associate Professor of Surgery
Duke University Medical Center
James A. Lee, MD
  • Vice Chair, Surgery
  • Chief, Endocrine Surgery
  • Associate Professor of Surgical Oncology
NewYork-Presbyterian Hospital, Columbia University Medical Center
Abtin Tabaee, MD, FACS
  • Associate Professor & Associate Attending of Otolaryngology
NewYork-Presbyterian Hospital, Weill Cornell Medical Center
Alon Zadok Weizer, MD, MS
  • Medical Director, Comprehensive Cancer Center
  • Associate Professor of Urology
University of Michigan Health System
Peter G. Whang, MD, FACS
  • Associate Professor of Orthopaedics and Rehabilitation
Yale School of Medicine
Francis A. Ennis Jr., MD
  • Joint Replacement Surgeon
  • Hip and Knee Specialist
Orthopaedic & Neurosurgery Specialists (ONS)
Isaac George, MD
  • Surgical Director, Structural Heart & Valve Center
  • Assistant Professor of Surgery, Cardiothoracic Surgery
NewYork-Presbyterian Hospital, Columbia University Medical Center
Tamara Wexler, MD, PhD
  • Director, Pituitary Center
  • Clinical Associate Professor, Department of Rehabilitation Medicine
NYU Langone Medical Center
Matthew L. Williams, MD, FACS
  • Assistant Professor of Surgery, Division of Cardiovascular Surgery
Perelman School of Medicine, University of Pennsylvania
David Robbins, MD, MSc
  • Program Director and Assistant Professor of Gastroenterology
Lenox Hill Hospital
Our Investors
We are grateful for the outstanding support from our investors affiliated with leading private equity and venture capital firms, hedge funds, and commercial and investment banks. Our investors and advisors have founded, invested in, and run leading technology, healthcare, and information services companies, including LinkedIn, PayPal, Gerson Lehrman Group, Capital IQ , Quintiles, and Square.