Meet the people behind Dr. B

Our mission is to make healthcare access more efficient and equitable.
Cyrus Massoumi
Cyrus Massoumi
CEO & Founder
Dr. B is the brainchild of Cyrus Massoumi, an entrepreneur and investor whose mission to make access to healthcare more efficient and equitable. Cyrus is the founder and former CEO of ZocDoc and member of the Board of Advisors of Columbia University's Mailman School of Public Health. Cyrus is also the founder of humbition, a venture capital firm, and Shadow, the app that uses AI and the power of community to reunite lost pets with their families.
Dr. Bobby Buka
Dr. Bobby Buka
Head of Strategy
With his focus on patient-centric treatment plans, Bobby Buka, MD is one of New York’s leading dermatologists. He is the co-founder of The Dermatology Specialists, a full-service practice with 20+ locations across New York City. Dr. Buka graduated from the Feinberg School of Medicine at Northwestern University and completed his residency at the University of California San Diego. He is affiliated with Mount Sinai Hospital and a member of the American Academy of Dermatology.
Misha Kaletsky
Misha Kaletsky
Head of Technology
Misha Kaletsky is a software engineering leader specializing in using technology to solve complex problems in healthcare. Prior to joining the Dr. B team, Misha held positions at Haven, ZocDoc, and Microsoft. He received a B.Sc. in Mathematics from Oxford University and a M.Sc. in Computer Science from University College London.
Ahmet Nalcacioglu
Ahmet Nalcacioglu
Principal Engineer
Ahmet Nalcacioglu is an experienced software engineer. Prior to joining Dr. B., he worked as a Principal Engineer at Haven, a healthcare startup. Before that, he built and ran a quantitative/systematic trading hedge fund. Ahmet received his MBA degree from New York University, MS degree in Computer Science from the University of Florida, and his B.Sc. in Computer Science from Bilkent University, Turkey.
Jimmy Chion
Jimmy Chion
Principal Engineer
Jimmy co-founded the site vaxstandby.com, also a COVID standby list, and merged forces with Dr. B in February to accelerate the shared mission. He was previously a Creative Technologist at the New York Times and Principal Designer at IDEO. Jimmy holds a BA in Psychology and MS in Mechanical Engineering, both from Stanford University.
Clara Bensen
Clara Bensen
Head of Brand
Clara Bensen is an experienced content strategist who has supported 100+ funds and startups across a range of industries. She is the founder of Far West, a leading digital creative studio. She is also a published author, with a travel memoir (No Baggage), which has been published in a dozen languages and optioned for a feature film by Warner Brothers.
Ariel Farias
Ariel Farias
Software Engineer
Ariel Farias is an experienced software engineer with years of experience building responsive and reliable solutions for clients across a range of industries. Before joining Dr. B, Ariel worked with Ultimate Software/UKG Inc., Ampled, and ChordBuff, which he co-founded. He holds a BS in Computer Engineering from the University of Florida.
Travis Schmeisser
Travis Schmeisser
Head of Product and Design
Travis Schmeisser is an expert in product design, founding companies such as Structure and First Principle, LLC and holding executive positions at Square and Flight Labs, amongst others.

Medical Advisors

Dr. Sudip Bose
Dr. Sudip Bose
Sudip Bose, MD is a world-leading emergency medicine physician, combat veteran, professor, and entrepreneur. With a wide variety of experience, Dr. Bose is focused on endeavors with large-scale health and educational impact. He founded The Battle Continues, a nonprofit assisting veterans with healthcare needs. Dr. Bose is also a clinical professor at Texas Tech and University of Illinois College of Medicine. He is a graduate of the honors program at Northwestern University, where he continued his medical school education at The Feinberg School of Medicine.
Dr. Cascya Charlot
Dr. Cascya Charlot
Cascya Charlot, MD is the current medical director of Allergy & Asthma Care of Brooklyn, with a focus on pediatric allergy and asthma initiatives. She is also the head of the pediatric allergy and immunology department at NYP Methodist Hospital. A Magna Cum Laude graduate from New York University, Dr. Charlot continued her education at Harvard Medical School, where she went on to complete her residency in internal medicine at NYU Downtown Hospital.
Dr. Michael Ghalchi
Dr. Michael Ghalchi
Michael Ghalchi, MD, FACC is the medical director of Manhattan Cardiovascular, one of the top cardiology practices in NYC. He is also the founder of Apollo 360 Health, an integrated chronic care management platform focused on the treatment of cardiovascular disease. Dr. Ghalchi graduated Magna Cum Laude from the University of Pennsylvania and completed medical school at NYU School of Medicine, where he is also a faculty member.
Dr. Akili Hinson
Dr. Akili Hinson
Akili Hinson, MD is a general surgery specialist in NY and is the founder and CEO of Juno Medical. An entrepreneur, physician, and healthcare innovation expert, Akili holds a Bachelor of Art Degree in Economics from Georgetown University, a Doctor of Medicine from Weill Medical College of Cornell University, and a MBA in Finance and Healthcare Management from Columbia Business School.
Dr. Ian Lipkin
Dr. Ian Lipkin
Ian Lipkin, MD is an internationally recognized expert in pathogen discovery with over 30 years in diagnostics, microbial discovery, and outbreak response. In 2020, Dr. Lipkin created the C3 test, an ultra-sensitive COVID-19 test that can detect and quantify even low viral loads. Dr. Lipkin was in China studying the coronavirus outbreak while it was happening.
Dr. Lila Massoumi
Dr. Lila Massoumi
Lila Massoumi, MD is a board-certified integrative psychiatrist focused on assisting others on their path towards greater self-awareness, self-actualization, and spiritual evolution. On a mission to change the way psychiatry is practiced in the United States, Dr. Massoumi has authored several textbook chapters for esteemed titles, including the American Psychiatric Association. She is a graduate of Duke University with an MD from George Washington University.
Dr. Saya Nagori
Dr. Saya Nagori
Saya Nagori, MD is an experienced ophthalmologist, glaucoma specialist, and entrepreneur with a demonstrated history in digital health. She is also the founder of FemHealth and the founding physician of Simple Health, a company focused on reproductive care needs. Dr. Nagori practices in Maryland after several years instructing residents on clinical and surgical ophthalmology at NYU. A graduate of Villanova University, Dr. Nagori attended Drexel University College of Medicine and completed her fellowship in Glaucoma at the Kresge Eye Institute.
Dr. Florian Otto
Dr. Florian Otto
An entrepreneur and former physician, Florian Otto, MD, PhD is the founder and CEO of Cedar, the healthcare financial platform. Prior to founding Cedar, Florian was an executive at ZocDoc. He holds an M.D., D.D.S. and PhD from the University of Freiburg, Germany.
Dr. Martin Wolff
Dr. Martin Wolff
Martin Wolff, MD, FACG is a double board-certified gastroenterologist and inflammatory bowel disease specialist. After being diagnosed with celiac disease at 16, his experience as a patent ignited his passion to care for those who similarly suffer. Dr. Wolff graduated summa cum laude from Yale University and completed his medical education, residency, and gastroenterology fellowship at NYU.  He is a Clinical Assistant Professor of Medicine at NYU Langone Health.

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