Penn Medicine Provider
Gastrointestinal Surgery, General Surgery
Daniel Alejandro Hashimoto, MD, MTR
he/him/his
Accepting new patients
Sees patients age 18 and up
Penn Gastrointestinal Surgery Perelman
Schedule onlineCall 215-662-2626

About me

  • Director, Penn Computer Assisted Surgery and Outcomes (PCASO) Laboratory
  • Assistant Professor of Surgery at the Hospital of the University of Pennsylvania

I graduated from Boston University with a degree in biology/neuroscience and completed my medical degree and master's of science in translational research degrees at the University of Pennsylvania Perelman School of Medicine. My general surgery training was completed at Massachusetts General Hospital and Harvard Medical School. I subsequently completed a fellowship in foregut surgery and comprehensive flexible endoscopy at University Hospitals Cleveland Medical Center. I am currently assistant professor of surgery at HUP and affiliated faculty in the Penn School of Engineering and Applied Science's General Robotics, Automation, Sensing, and Perception (GRASP) Laboratory.

I believe in working closely with patients to help them meet their goals for their gastrointestinal conditions. I offer surgical and endoscopic treatments for gastrointestinal diseases and have a specific interest in disorders of the foregut, including diaphragmatic/paraesophgeal hernias, gastroesophageal reflux (GERD), diaphragm dysfunction and paralysis, achalasia and other GI motility disorders. I offer complex minimally invasive approaches to diseases including robotic paraesophageal and hiatal hernia repair, per oral endoscopic myotomy (POEM) for achalasia, ZPOEM for Zenker's diverticulum, laparoscopic common bile duct exploration, and endoscopic GI tract defects such as strictures and leaks as well as diaphragm pacing and robotic abdominal wall hernia repair and reconstruction. I also offer bariatric endoscopy including endoscopic sleeve gastroplasty and transoral outlet reduction.

My laboratory, the Penn Computer Assisted Surgery and Outcomes (PCASO) Laboratory, is focused on the use of technology to improve surgeon performance and decision-making, in particular on the translation of artificial intelligence and computer vision for surgical video analysis. I have authored over 60 publications in journals such as the New England Journal of Medicine, Nature Biotechnology, and Annals of Surgery, and am the editor of the textbook Artificial Intelligence in Surgery: Understanding the Role of AI in Surgical Practice.

Education and training

  • Medical School: University of Pennsylvania School of Medicine
  • Residency: Massachusetts General Hospital
  • Fellowship: University Hospitals of Cleveland

Insurance accepted

My Locations

Learn about location

Penn Medicine hospital privileges

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
Dr. Hashimoto is a Penn Medicine physician.

Qualifications and experience

Treatments and Conditions

My research

Hashimoto DA*, Rosman G*, Witkowski ER, Stafford C, Navarette-Welton AJ, Rattner DW, Lillemoe KD, Rus DL, Meireles OR Computer vision analysis of intraoperative video: Automated recognition of operative steps in laparoscopic sleeve gastrectomy , Annals of Surgery, 270(3): 2019,414-421

Reinke A, Tizabi MD, Baumgartner M, Eisenmann M, Heckmann-Nötzel D, Kavur AE, Rädsch T, Sudre CH, Acion L, Antonelli M, Arbel T, Bakas S, Benis A, Buettner F, Cardoso MJ, Cheplygina V, Chen J, Christodoulou E, Cimini BA, Farahani K, Ferrer L, Galdran A, van Ginneken B, Glocker B, Godau P, Hashimoto DA, Hoffman MM, Huisman M, Isensee F, Jannin P, Kahn CE, Kainmueller D, Kainz B, Karargyris A, Kleesiek J, Kofler F, Kooi T, Kopp-Schneider A, Kozubek M, Kreshuk A, Kurc T, Landman BA, Litjens G, Madani A, Maier-Hein K, Martel AL, Meijering E, Menze B, Moons KGM, Müller H, Nichyporuk B, Nickel F, Petersen J, Rafelski SM, Rajpoot N, Reyes M, Riegler MA, Rieke N, Saez-Rodriguez J, Sánchez CI, Shetty S, Summers RM, Taha AA, Tiulpin A, Tsaftaris SA, Van Calster B, Varoquaux G, Yaniv ZR, Jäger PF, Maier-Hein L Understanding metric-related pitfalls in image analysis validation , Nature Methods, 21(2): 2024,182-194

Ward TM, Hashimoto DA, Ban Y, Rattner DW, Inoue H, Lillemoe KD, Rus DL, Rosman G, Meireles OR Automated operative phase identification in peroral endoscopic myotomy , Surgical Endoscopy, 35(7): 2021,4008-4015

Hashimoto DA, Marks JM Skills in flexible endoscopy are a valuable tool for GI surgeons , Annals of Surgery, 275(4): 2022,e664

Ward TM, Fer DM, Ban Y, Rosman G, Meireles OR, Hashimoto DA Challenges in surgical video annotation , Computer Assisted Surgery, 26(1): 2021,58-68

Meireles OR, Rosman G, Altieri MS, Carin L, Hager G, Madani A, Padoy N, Pugh CM, Sylla P, Ward TM, Hashimoto DA; SAGES Video Annotation for AI Working Groups SAGES consensus recommendations on an annotation framework for surgical video , Surgical Endoscopy, 35(9): 2021,4918-4929

Caicedo HH, Hashimoto DA, Caicedo JC, Pentland A, Pisano GP Overcoming barriers to early disease intervention , Nature Biotechnology, 38(6): 2020,669-673

Ban Y, Rosman G, Eckhoff JA, Ward TM, Hashimoto D, Taisei K, Iwaki H, Meireles O, Rus D SUPR-GAN: Surgical prediction GAN for event anticipation in laparoscopic and robotic surgery , IEEE Robotics & Automation Letters, 7(2): 2022,5741-5748

Benson J, Boutros C, Khan SZ, Lyons J, Hashimoto DA, Marks JM Evaluation of postoperative esophagram following peroral endoscopic myotomy (POEM) , Surgical Endoscopy, 38(9): 2024 ,5148-5152

Hashimoto DA, Axtell AL, Auchincloss HG Percutaneous tracheostomy , New England Journal of Medicine, 383(20): 2020,e112

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