48 Years of Experience
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Riff, Gastroenterologist in Anaheim, CA?
Dr. Dennis Riff, MD is a Gastroenterologist, who primarily practices in Anaheim, CA. He has been practicing for over 48 years and is board certified. Dr. Riff graduated from Sidney Kimmel Medical College at Thomas Jefferson University and completed his residency at Va Long Beach Hlthcare Sys, Internal Medicine; Orange County Med Ctr, Internal Medicine; Thos Jefferson Univ Hosp, Internal Medicine. Dr. Riff is fluent in English, Filipino; Pilipino, Spanish, and Vietnamese, and is currently seeing new patients. Dr. Riff’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Riff’s office at (714) 778-1300.
Where did Dr. Riff go to medical school and complete their residency?
Residency: Va Long Beach Hlthcare Sys, Internal Medicine; Orange County Med Ctr, Internal Medicine; Thos Jefferson Univ Hosp, Internal Medicine | University Ca Irvine | Thomas Jefferson University Hospital Program
Medical School: Jefferson Medical College of Thomas Jefferson University | Sidney Kimmel Medical College at Thomas Jefferson University
Is Dr. Riff board certified as a Gastroenterologist?
Yes, Dr. Dennis Riff, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Riff speak?
Dr. Riff and their clinical team can communicate with patients in the following languages:
English
Filipino; Pilipino
Spanish
Vietnamese
What conditions does a Gastroenterologist like Dr. Riff typically treat?
As a Gastroenterologist, Dr. Riff diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Riff. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Family History of Digestive Organ Cancer
- Cancer
- Family History
- Genetic risk for gastrointestinal cancer
- Family history of GI cancer
- Hereditary digestive cancer
ICD-10 Codes:
- Z800: Family history of malignant neoplasm of digestive organs
What procedures does a Gastroenterologist like Dr. Riff typically perform?
As a Gastroenterologist, Dr. Riff performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Riff. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
CPT Codes:
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Small Intestine Endoscopy with Biopsy
- Enteroscopy with Biopsy
- Small Bowel Endoscopy
- Intestinal Biopsy (Endoscopic)
CPT Codes:
- 44361: Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with biopsy, single or multiple
Also known as:
- Hemorrhoid Removal with Rubber Band Ligation
- Rubber Band Ligation for Hemorrhoids
- Internal Hemorrhoid Ligation
- Banding of Hemorrhoids
- Hemorrhoid Banding
CPT Codes:
- 46221: Hemorrhoidectomy, internal, by rubber band ligation(s)
Also known as:
- Anoscopy (Diagnostic)
- Anoscopy
- Anal Canal Exam
- Rectal Scope Exam
- Anus Diagnostic Procedure
CPT Codes:
- 46600: Anoscopy; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Does Dr. Riff accept my insurance?
Dr. Riff accepts most major insurance plans. Important: Please call our office at (714) 778-1300 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Riff accept in Anaheim, CA?
Dr. Riff in Anaheim, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Centene Corporation
CVS Health (formerly Aetna)
Heritage Health
Humana
Medicare
Other Health Care Provider
State of California
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Riff's office located?
Dr. Dennis Riff's Primary Practice
1211 W La Palma Ave Ste 306
Anaheim, CA 92801
(714) 778-1300
What is Dr. Riff's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Riff's National Provider Identifier (NPI) number is 1922004662.
What common questions do patients ask about Dr. Riff?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Riff
What is Dr. Dennis Riff's specialty?
Dr. Riff is a Gastroenterologist near Anaheim, CA.
What does a Gastroenterologist do?
An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.
Is this Dr. Dennis Riff affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Riff is affiliated with Uci Medical Center, Orange County Global Medical Center, Ahmc Anaheim Regional Medical Center which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Gastroenterologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Dennis Riff accepting new patients in Anaheim, CA?
Yes, Dr. Dennis Riff is accepting new patients at this time.
Does Dr. Dennis Riff offer online booking?
Please contact Dr. Riff's office at (714) 778-1300 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Dennis Riff?
Please contact Dr. Riff's office at (714) 778-1300 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Dennis Riff have?
Dr. Dennis Riff is certified by the American Board of Internal Medicine.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>