Oscar A. deLeon-Casasola MD

Oscar deLeon-Casasola

Oscar A. deLeon-Casasola

Contact Information
Roswell Park Cancer Institute
Dept. of Anesthesiology
Elm and Carlton Streets
Buffalo, NY 14263
Phone: (716) 845-3240
Fax: (716) 845-8518

Professional Summary:

Program Director, UB Anesthesiology Pain Management Fellowship

Education and Training:

  • Residency, Anesthesiology, University at Buffalo, Chief Resident (1990)
  • Residency, Critical Care track, Downstate Medical Center (1987)
  • Internship, General Surgery, Downstate Medical Center (1986)
  • Residency, General Surgery, Military Hospital, Senior Resident (1983)
  • MD, Universidad de San Carlos de Guatemala (1982)
  • Internship, Military Hospital (1982)


  • Professor, Oncology, Roswell Park Cancer Institute (2006-present)
  • Professor with Tenure, Anesthesiology, University at Buffalo (2001-present)
  • Chief, Pain Medicine and Symptom Management, Roswell Park Cancer Institute (1999-present)
  • Director, Anesthesia Research, Anesthesiology, Roswell Park Cancer Institute (1998-present)
  • Anesthesiologist, Anesthesiology, Roswell Park Cancer Institute (1990-present)
  • Associate Professor, Anesthesiology, University at Buffalo (1996–2001)
  • Chief, Critical Care Medicine, Critical Care, Roswell Park Cancer Institute (1994–1998)
  • Assistant Professor, Anesthesiology, University at Buffalo (1991–1996)
  • Director, Surgical Intensive Care Unit, Roswell Park Cancer Institute (1993–1994)
  • Director of the Acute Pain Service, Acute Pain Service, Roswell Park Cancer Institute (1991–1993)
  • Instructor, Anesthesiology, University at Buffalo (1990–1991)
See all (1 more)

Awards and Honors:

  • Top Doctors List (2011)
  • Castle Connolly Medical List of America's Top Doctors (2011)
  • Top Doctors List (2010)
  • Best Dctors in America (2009)
  • ESRA Distinguished Service Award (2007)
  • Who's Who Among Executives and Professionals in Medicine and Healthcare (2007)
  • America's Top Doctors for Cancer (2006)
  • America's Top Doctors (2006)
  • M/Pfizer Visiting Professorship in Pain Medicine (2006)
  • 100 Top Docs in Buffalo (2006)
  • Empire Who‘s Who Among Executives and Professional in Healthcare and Medicine (2005)
  • America's Top Doctors (2005)
  • Chair, Scientific Committee (2004)

Grants and Sponsored Research:

  • January 2002
    Cancer Pain Education in the Community
    Janssen Laboratories
    Role: Co-Investigator
  • January 2001
    A Multi-Modal Rehabilitation Program for Patients Undergoing Radical Prostatectomies
    Astra Zeneca
    Role: Co-Investigator
  • January 2001
    A Multi-Modal Rehabilitation Program for Patients Undergoing Radical Prostatectomies
    Roxane Laboratories Research Grant
    Role: Co-Investigator

Journal Articles:

See all (28 more)

Books and Book Chapters:

  • Hitt JM and deLeon OA. Complications associated with Superior Hypogastric and Ganglion Impar Blocks. 2013.
  • deLeon-Casasola OA. Topical Analgesia for Neuropathic Pain. 2010.
  • Urie B, deLeon-Casasola OA. Pharmacokinetics of Epidural Opioids. 2009.
  • Sinatra RS, deLeon-Casasola OA, Ginsberg B, Viscusi ER. Acute Pain Management. 2009.
  • deLeon-Casasola OA, Yarussi AT. Cancer Pain. 2008.
  • deLeon-Casasola OA. Neurolysis of the Sympathetic Axis for Cancer Pain Management. 2008.
  • Deschner C, Allen M, deLeon-Casasola OA. Epidural Blockade. 2007.
  • deLeon-Casasola OA. Complications Associated with Superior Hypogastric and Ganglion Impar Blocks. 2007.
  • deLeon-Casasola OA. Cancer Pain -- Pharmacological, Interventional, and Palliative Care Approaches. 2006.
  • deLeon-Casasola OA. Cancer Pain Management in the Opioid Tolerant Patient. 2006.
  • De Medicis E, deLeon-Casasola OA. Local Anesthetic Toxicity in the Ambulatory Setting. 2005.
  • Deleon-Casasola OA, O‘Leary KA. The gynecology-oncology patient in the intensive care unit. 1995.
See all (2 more)


  • Sands R, deLeon-Casasola OA, Harrison P, Velagapudi S, Lema MJ. Epidural fentanyl action, like intravenous fentanyl, occurs primarily at the supraspinal level. Reg Anesth. 1995; 20(28).
  • Plancarte R, deLeon-Casasola OA, Allende S, Lema MJ. The clinical effectiveness of two alternative aproaches for neurolytic superior hypogastric plexus blocks in patients with pelvic pain associated with extensive retroperitoneal cancer. Reg Anesth. 1995; 20(25).
  • O'Leary KA, deLeon-Casasola OA, Lema MJ. The use of thoracic epidural anesthesia with sedatin for post-surgica bronchopleural fistula repair. Reg Anesth. 1995; 20(25).
  • deLeon-Casasola OA, Plancarte R, Lema MJ. Neurolytic superior hypogastric plexus block for cancer pain. Anesthesiology. 1995; 63(3A).
  • O'Leary KA, deLeon-Casasola OA, Lema MJ. Thoracic epidural anesthesia for the repair of bronchopleural fistulas. Reg Anesth. 1995; 20(25).
  • Plancarte R, deLeon-Casasola OA, Lema MJ. Alternative approaches for super hypogastric plexus block. Reg Anesth. 1995; 20(28).
  • Nader-Djalal N, deLeon-Casasola OA, Peer GL, Vladutiu AO, Lema MJ. Pre-operative levels of B-endorphin and Met-enkephalin and the Duration of Analgesia after TURP under Spinal Anesthesia. Anesthesiology. 1994; 81.
  • Deleon-Casasola OA, McClintick EA, Harrison P, Massey J, Lema MJ. The addition of intramuscular ketorolac to epidural morphine-bupivicaine for post-thoracotomy analgesia. Regional Anesthesia. 1993; 18.
  • deLeon-Casasola OA, Karabella D, Lema MJ. The e