.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

With 55 years in gastroenterology and internal medicine, Dr. Dennis Riff treats colon polyps, abdominal pain, and GERD, and performs colonoscopy, lower GI endoscopy, and laparoscopy. He is affiliated with Ahmc Anaheim Regional Medical Center, West Anaheim Medical Center, Orange County Global Medical Center, and Anaheim Community Hospital. Dr. Riff earned his medical degree from Sidney Kimmel Medical College at Thomas Jefferson University and sees patients in Anaheim, California. He speaks Chinese and Spanish. Patients on Vitals rate Dr. Riff 4.54 out of 5.

Overview based on verified provider data

accepting new patients
4.5

37 Ratings
55 years of experience
speaks Chinese, Spanish
Sidney Kimmel Medical College At Thomas Jefferson University
17 written reviews
2 specialties
9 areas of expertise
4 hospital affiliations
3 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Riff's Ratings and Reviews

4.5

37 Ratings with 17 written Reviews

Average Wait Time 13 Minutes

How was your appointment with
Dr. Riff?

Patients’ Perspective

Gave an accurate diagnosis: (23) Did WellNeeds Improvement (3)
Had a good bedside manner: (23) Did WellNeeds Improvement (3)
Spent time with me: (23) Did WellNeeds Improvement (2)
Provided follow-up after the visit: (22) Did WellNeeds Improvement (4)
Flexible scheduling: (26) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

37 ratings & reviews

Sort:

Showing 1 to 10 of 17 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr Riff Great doctor he is one of the best doctors I have seen in my 64 years.The office staff is the same ????

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

April 28th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Doctor Dennis Riff is sincere and caring towards his patients.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

October 26th, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Caring, understanding, highly knowledgeable and with no hesitation to take care of or care for the condition that was causing me discomfort or hindering my daily living!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

January 19th, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr.Riff is an amazing doctor. He treats people with kindness and he shows that he really cares about an individual

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

May 28th, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Fair rating is a gift for this Dr. ON THE DAY OF THE PROCEDURE we expect to see Dr Riff. He has the gall to send another MD in his place! He NEVER checked with the patient 1ST! After the procedure HE NEVER CHECKED ON the progress or even made a common courteous phone call ON HIS OWN PATIENT! If he works for you so be it. I would NEVER recommend any Dr that has this kind of attitude toward his patients!

Did Well

Spent time with me
Flexible scheduling

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Provided follow-up after the visit

May 2nd, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Riff is a good listener, easy to talk to. I find him very carrying, knowledgeable & would highly recommend him.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

September 24th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I was treated so well it was surprising in this age of poor service. welldone

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

January 21st, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Riff is an amazing and caring doctor. He takes all the time you need and explains everything so you can understand it completely. On top of all this he has a great sense of humor! You will leave his office knowing you are in very good hands. I would be very comfortable recommending him and his office to anyone. Such wonderful Doctor!!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

April 9th, 2014

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

You are all very wonderful doctors & I love you all. Dr. Riff & Dr. De Micco deserve 500 gold stars in my book. Would like phone call to further discuss questions I have about my situation. I was very highly reccommended to see Dr. Riff. He & Dr. DeMicco are exquisite drs., & deserve doctors of the year award forever. I would love to write to the Medical Board & let them know how wonderful these 2 very fine drs. are.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

July 20th, 2013

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I recently visited Dr. Riff in Anaheim and had a pleasant experience. The front office staff was so nice even though they are super busy. Rebecca doesn't loose her composure and kindness in the midst of the fast pace environment. I was impressed by the side manners Dr. Riff displayed. He didn't embarrass me or make me feel dumb even though I felt my questions did sound that way at times. He didn't treat me like a number but a person. I would recommend this office to my family and friends.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

May 7th, 2013

Associated Gastroenterology Medical Group

1211 W La Palma Ave Ste 306Anaheim, CA 92801

Get Directions

Tel: (714) 778-1300

Mon8:30 am - 5:00 pm

Tue8:30 am - 5:00 pm

Wed8:30 am - 5:00 pm

Thu8:30 am - 4:00 pm

Fri8:30 am - 1:00 pm

SatClosed

SunClosed

Anaheim Endoscopy Center

1211 W La Palma Ave Ste 301Anaheim, CA 92801

Get Directions

Tel: (714) 284-0737

Mon6:30 am - 3:00 pm

Tue6:30 am - 3:00 pm

Wed6:30 am - 3:00 pm

Thu6:30 am - 3:00 pm

Fri6:30 am - 3:00 pm

SatClosed

SunClosed

Orange County Medical Center

3440 E La Palma AveAnaheim, CA 92806

Get Directions

Tel: (714) 644-2000


Dr. Dennis Stone Riff, MD	Ji Soo Choi, APRN	Theresa Obonyano, APRN	Jan Seiler, APRN
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.5 (37 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
55 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks Chinese, Spanish	Speaks English	Speaks English	Speaks English
Anaheim , CA	Sacramento , CA	Sacramento , CA	Montgomery , AL
Med School: Sidney Kimmel Medical College At Thomas Jefferson University	Med School: New York University	Med School: The University of Texas Health Science Center at Houston	Med School: Georgia State University
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

Abdominal Pain
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Hemorrhoids
Internal Medicine
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

Dr. Dennis Stone Riff holds an expired medical license in the state of California.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2025.

Education & Training

Medical School

Graduated from Sidney Kimmel Medical College At Thomas Jefferson University in 1971.

NPI Number

Dr. Riff's NPI number is 1922004662.

Maja Filipovic
Anesthesiology
12 Years Exp | Long Beach, CA
(0)
Sarah Soliman
Pediatrics
7 Years Exp | Los Angeles, CA
(0)
Maria Steiner-Renoir, PMHNP-BC, FNP-C, MSN
Nurse Practitioner
5 Years Exp | Los Angeles, CA
(0)
Heidi Dawn Nelson
Public Health & General Preventive Medicine
41 Years Exp | Pasadena, CA
(0)
Yan Jia
Diagnostic Radiology
6 Years Exp | Los Angeles, CA
(0)
Lynette Smeder Fox
Nurse Practitioner
| Long Beach, CA
(0)
Richard Selwyn Ginsburg
Anesthesiology
45 Years Exp | Irvine, CA
(0)
Fady A Youssef
Critical Care Medicine
14 Years Exp | Orange, CA
(0)
Marcel Heiferling
Pediatrics
52 Years Exp | Bellflower, CA
(0)
Melissa Anne Chacko
Emergency Medicine
18 Years Exp | PASADENA, CA
(0)

Does Dr. Dennis Riff accept my insurance?: You can see the insurance plans that Dr. Dennis Riff accepts on their Vitals profile.
How can I make an appointment with Dr. Dennis Riff?: You can find contact information for Dr. Dennis Riff here on Vitals.
What languages does Dr. Dennis Riff speak?: Dr. Dennis Riff speaks Chinese and Spanish.
Where is Dr. Dennis Riff's office located?: Dr. Dennis Riff's office is located at 1211 W La Palma Ave Ste 306, Anaheim, CA, 92801.
Which hospitals is Dr. Dennis Riff affiliated with?: Dr. Dennis Riff is affiliated with Ahmc Anaheim Regional Medical Center, West Anaheim Medical Center, Orange County Global Medical Center, and Anaheim Community Hospital Llc.

This provider profile is built using data from:

NPPES NPI Registry
State medical licensing boards
Healthcare system and provider network data

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Summary

Quick Facts

Patients’ Perspective

Dr. Riff's Ratings and Reviews

Patients’ Perspective

37 ratings & reviews

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Did Well

Needs Improvement

Office Locations

Associated Gastroenterology Medical Group

Anaheim Endoscopy Center

Orange County Medical Center

Compare with Similar Doctors

Insurance Plans Accepted by Dr. Dennis Stone Riff

Medical Specialties

Dr. Dennis Stone Riff has the following 2 specialties

Specialty Expertise

Dr. Dennis Stone Riff has the following 9 areas of expertise

Hospital Affiliations

Dr. Riff is affiliated with the following hospitals. This means he can practice and admit patients at these hospitals.

Certifications, License, & Education

55 Years Experience

Medical License

Education & Training

Medical School

NPI Number

Similar doctors

Frequently Asked Questions

Data Sources

Gastroenterologists Nearby

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews