Contact Us & Directions

To make an appointment, call (631) 470-1450.
Our fax number is (631) 470-1451.

Dr. Rivadeneira has several convenient office locations:

Smithtown Office
222 Middle Country Road, Suite 211
Smithtown, NY 11787
[Map/Directions]
Monday-Friday, 8am-5pm
Extended Hours Available
 Port Jefferson Office
931 Hallock Road
Port Jefferson NY 11777
[Map/Directions]
Monday-Friday, 8am-5pm
Extended Hours Available
Babylon Office
400 West Main Street, Suite 301
Babylon, NY 11702
[Map/Directions]
Monday-Friday, 8am-5pm
Extended Hours Available
 Riverhead Office
31 Main Road, 2nd Floor
Riverhead, New York 11901
[Map/Directions]
Monday-Friday, 8am-5pm
Extended Hours Available
Woodbury Office
321-B Crossways Park Drive
Woodbury, NY 11797
[Map/Directions]
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.