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Patient Testimonials

Dr. Rivadeneira’s patients and their families are grateful to him for his services as a physician and surgeon, and their expressions of gratitude are testimonials to his commitment to give his patients the best possible care.

“It’s difficult to put into words how grateful I am for you and your staff for bringing my father back to health. Recent follow-ups with his doctors found no indication of cancer. Thank God and thank you. You managed to pull him off the horrible cancer merry-go-round he’d been on for so long. This is beginning to be a wonderful time in our lives. Thank you for giving both of us a second chance.”

— SP, the daughter of a patient who underwent a laparoscopic colon resection for cancer

“One word: PEACE. We had peace because we knew God was in control. Every word you spoke we understood; every question we might had forgotten to ask, you already answered; and everybody in that room gave us reassurance, compassion and hope. I guess I just wanted you to know the special gifts God placed in you besides your awesome abilities as a surgeon. He gave you the gift of compassion, a joyful spirit and a smile that lights up a room. Not everyone who comes to you will have great faith and trust in God as I do, so they will need everyone of your wonderful God-given abilities to help them through their situations.”

— AT, who is a colon cancer survivor

“My wife and I thank you so much for your thoughtfulness. Doc, they say for every bad thing that happens, something good happens. We know what the bad was. The good is that we met a great doctor who is even a greater human being. Thank you so much.”

— DT & LT, who is a colon cancer survivor

“Dr. Rivadeneira is a great surgeon with advanced skills, who knows how to treat his patients, both in a medical sense and on a personal level. He put me at ease and made me feel comfortable during a pretty stressful time.”

— SL, who had colon cancer and had to have her entire colon removed,
which was done with laparoscopic surgery

“I was happy and relieved that Dr. Rivadeneira was able to remove the cancer completely without performing open surgery — and in a way that made a colostomy unnecessary.”

— RC, who had laparoscopic surgery for treatment of rectal cancer

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)
Map/Directions

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

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

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

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

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
.