How To Prep

Below are instructions on how to prepare for an upcoming exam.

Anorectal Prep (PDF)

Mirilax Prep (PDF)

Movi Prep (PDF)

Contact David E. Rivadeneira, MD, FACS, FASCRS

Phone: (631) 470-1450 • Fax: (631) 470-1451

Smithtown Office
222 Middle Country Road, Suite 211  •  Smithtown, NY 11787
Monday-Friday, 8am-5pm (Extended Hours Available)

Port Jefferson Office
931 Hallock Road  •  Port Jefferson NY 11777
Monday-Friday, 8am-5pm (Extended Hours Available)

Babylon Office
400 West Main Street, Suite 301  •  Babylon, NY 11702
Monday-Friday, 8am-5pm (Extended Hours Available)

Riverhead Office
31 Main Road, 2nd Floor • Riverhead, New York 11901
Monday-Friday, 8am-5pm (Extended Hours Available)

Woodbury Office
321-B Crossways Park Drive • Woodbury, New York 11797
Monday-Friday, 8am-5pm (Extended Hours Available)

Quick Facts about
Dr. David Rivadeneira

MD: Howard University College of Medicine, Washington, DC (1995), graduated with honors (election to Alpha Omega Alpha Honor Medical Society; inclusion in Who’s Who in American Colleges and Universities).

Residency Training: General Surgery, Weill Medical College of Cornell University (New York Presbyterian Hospital-Cornell Medical Center and Memorial Sloan-Kettering Cancer Center).

Fellowship Training: Colon and Rectal Surgery, Lahey Clinic (Burlington, MA); Cancer Research Clinical Fellowship (funded by National Institute of Health), Cornell Medical Center.

Board Certification: Colon and Rectal Surgery; Surgery.

Specialties: Management of diseases of the small bowel, colon, rectum and anus, including colon, rectal and anal cancer, diverticulitis, familial polyposis, chronic ulcerative colitis, Crohn’s disease, ileoanal reservoir (J-pouch), colon polyps, incontinence, rectal prolapse, anorectal abscess, fistulas, fissures pelvic floor disorders, constipation, diarrhea and hemorrhoids, pilonidal disease, rectocele; use of laparoscopic minimally invasive surgery and other minimally invasive procedures for the treatment of colorectal diseases, including cancer; colonoscopy.

Memberships: Fellow, American College of Surgeons (FACS); fellow, American Society of Colon and Rectal Surgeons (FASCRS); Fellow, Society of Surgical Oncology (SSO); member, Alpha Omega Alpha Honor Medical Society; member, Society of American Gastrointestinal Endoscopic Surgeons; member, Society for Surgery of the Alimentary Tract, Society of Surgical Oncology.

Publications: Selected journal and book publications (click here for online abstracts/full text of journal articles via National Library of Medicine).

Honors: Dr. David Rivadeneira has been recognized by Castle Connolly as one of America’s Top Doctors 2014. Selected for inclusion in Best Doctors in America, 2010-2011; selected for inclusion in Guide to America’s Top Surgeons (2007 and 2009) published by the Consumers’ Research Council of America; recipient of Patients’ Choice Award, 2008, 2011; selected for inclusion in Marquis Who’s Who in America (2009), Marquis Who’s Who in the World (2009), Cambridge Who’s Who Among Professionals in Research and Medicine (2009; 2008), and Marquis Who’s Who (2008; 2007); Lahey Clinic Alumni Association award for outstanding academic achievement in colon and rectal surgery (2003); American Association of Cancer Research Scholar Award (1995).

Languages Spoken: English, Spanish, Portuguese.

Click here for Dr. Rivadeneira’s full Curriculum Vitae