Gustavo Gabriel Fernandez-Ranvier MD PhD
Bariatric Surgery, Endocrine, Minimally Invasive Surgery
Associate Program Director MIS & Bariatric Surgery Fellowship. Director of Endocrine, MIS & Bariatric Surgery Research
Telehealth Available
Request Appointment5 East 98th Street3rd floor, FPA BuildingNew York, NY 10029
Fax+1 212-202-4995
Overview of Dr. Fernandez-Ranvier
I am a board-certified fellowship trained surgeon in endocrine, metabolic and minimally invasive surgery. My specialization entails caring for patients with different endocrine diseases and obesity with their associated metabolic disorders. This includes diseases of the parathyroid, thyroid, adrenal glands, and the gastrointestinal tract. Because these conditions are often complex, I work closely with colleagues specializing in internal medicine, endocrinology, nutrition, medical oncology, radiology, gastroenterology, psychology among and pathology among others, to deliver state-of-the-art multidisciplinary care. One of my current focuses and interest has been on how best to treat patients with minimally invasive procedures. I perform a novel scarless approach through the mouth for the treatment of thyroid (TOETVA) and parathyroid (TOEPVA) tumors and we have successfully treated with this approach many local and international patients to date. I also treat different intra-abdominal and abdominal wall (hernias) diseases including the esophagus, stomach, gallbladder, pancreas, the small intestine and the colon. I provide excellent quality surgical service with a geographical reach of my referral base not only to the local community of the great New York state, but to other states in the nation as well as the Internationally community.
Education & Training
San Joaquin General HospitalResidency, Surgery, 2010 - 2013
Loma Linda University Health Education ConsortiumResidency, Surgery, 2008 - 2010
University of California San Francisco School of MedicinePost-Doctoral Fellowship, 2005 - 2008
University of Buenos AiresClass of 1998
Icahn School of Medicine at Mount Sinai/Mount Sinai HospitalFellowship, Endocrinology, Diabetes, and Metabolism
Certifications & Licensure
CA State Medical License 2010 - 2027
NY State Medical License 2014 - 2025
American Board of Surgery Surgery
Awards, Honors, & Recognition
- Top Endocrine, Metabolic and Minimally Invasive Surgeon in New York, New York 2017. The Leading Physicians of the World 2017
- Fellow (FACS) American College of Surgeons
Publications & Presentations
PubMed
- Remote Access Thyroid Surgery: When Does It Make Sense?Marina E Robson Chase, Gustavo Fernandez-Ranvier, Hyunsuk Suh, William B Inabnet 3rd
Advances in Surgery. 2025-09-01 - 1 citationsAdrenocorticotropin-Secreting Pure Adrenal Ganglioneuroma Leading to Cushing Syndrome.Daniel Alban, Parisa Verma, Alexander Kirschenbaum, Gustavo Fernandez-Ranvier, Alice C Levine
JCEM Case Reports. 2025-03-01 - The COVID-19 Tracheostomy Experience at a Large Academic Medical Center in New York during the First Year.Dhruv Patel, Anthony Devivo, Evan Leibner, Atinuke Shittu, Usha Govindarajulu
Journal of Clinical Medicine. 2024-04-07
Committees
- Member, Fellowship Accreditation Committee, AAES 2018 - Present
- Committee Member, CME Committee, SAGES 2015 - 2018
Research History
- Postdoctoral FellowBasic Science Research: Research was performed at the University of California at San Francisco focusing on clinical aspects and molecular pathogenesis of different parathyroid, thyroid and adrenal tumors under the mentorship of world renowned endocrine surgeon, Dr Orlo H Clark, QY Duh & E Kebebew2005 - 2008
Professional Memberships
- Fellow
Other Languages
- Spanish
External Links
- Minimally Invasive Endocrine Surgeryhttps://www.youtube.com/watch?v=MDHOZvC-XO0
- Laparoscopic Duodenal Diverticulumhttps://www.youtube.com/watch?v=OalX6vK1e7w&t=231s
- SAGEShttps://www.sages.org/search-results/?fwp_keywords=fernandez%20ranvier
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