DN
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Nguyen, Gastroenterologist in Fullerton, CA?
Dr. Douglas Nguyen, MD is a Gastroenterologist, who primarily practices in Fullerton, CA with 2 additional practice locations. He is board certified. Dr. Nguyen is fluent in English and Vietnamese, and is currently seeing new patients. Dr. Nguyen’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nguyen’s office at (949) 364-5090.
Where did Dr. Nguyen go to medical school and complete their residency?
Medical School: University of Cincinnati / Main Campus
What languages does Dr. Nguyen speak?
Dr. Nguyen and their clinical team can communicate with patients in the following languages:
English
Vietnamese
What conditions does Dr. Nguyen treat?
As a Gastroenterologist, Dr. Nguyen 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. Nguyen. 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.
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:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
- Stomach Ache
- Belly Pain
- Stomach Pain
ICD-10 Codes:
- R1013: Epigastric pain
- R109: Unspecified abdominal pain
Also known as:
- Non-Infectious Gastroenteritis and Colitis
- Colon Polyps
- Digestive Disease
- Colonic Polyps
- Inflammation of Stomach and Intestines
- Non-Bacterial Colitis
- Gut Inflammation
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- K529: Noninfective gastroenteritis and colitis, unspecified
- Z86010: Personal history of colon polyps
Also known as:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
Also known as:
- Ulcerative Pancolitis with Rectal Bleeding
- Ulcerative Pancolitis
- Gastrointestinal Bleeding
- Ulcerative Colitis
- Chronic Pancolitis with Bloody Stool
- Extensive Ulcerative Colitis with Rectal Bleeding
- GI Bleeding from Pancolitis
- Chronic Pancolitis
- Extensive Ulcerative Colitis
- Inflammatory Bowel Disease (IBD)
ICD-10 Codes:
- K51011: Ulcerative (chronic) pancolitis with rectal bleeding
- K5100: Ulcerative (chronic) pancolitis without complications
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
- K5909: Other constipation
Also known as:
- Hemorrhoids
- Piles
- Swollen Veins in Anus
- Anal Lumps
ICD-10 Codes:
- K649: Unspecified hemorrhoids
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
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:
- Stomach Ulcer
- Peptic Ulcer
- Gastric ulcer
- Peptic ulcer of the stomach
- Stomach sore
ICD-10 Codes:
- K259: Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
Also known as:
- Benign Transverse Colon Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous transverse colon growth
- Transverse colon adenoma
- Transverse colon benign tumor
ICD-10 Codes:
- D123: Benign neoplasm of transverse colon
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Blocked Esophagus
- Esophagus Disorder
- Esophageal Obstruction
- Food Pipe Blockage
- Swallowing Difficulty
ICD-10 Codes:
- K222: Esophageal obstruction
Also known as:
- Stomach and Duodenum Disorder
- Stomach Disorder
- Gastric Condition
- Duodenal Condition
- Digestive System Problem
ICD-10 Codes:
- K319: Disease of stomach and duodenum, unspecified
Also known as:
- Functional Intestinal Disorder
- Digestive Disease
- Functional Bowel Disorder
- Digestive Motility Disorder
ICD-10 Codes:
- K5989: Other specified functional intestinal disorders
Which procedures does Dr. Nguyen perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Douglas Nguyen may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Nguyen's office.
Does Dr. Nguyen accept my insurance?
Dr. Nguyen accepts most major insurance plans. Important: Please call our office at (949) 364-5090 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Nguyen accept in Fullerton, CA?
Dr. Nguyen in Fullerton, 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
Blue Cross Blue Shield of Michigan
CalOptima
Centene
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Inland Empire
Medicare
Monarch HealthCare
UnitedHealthcare
View All Insurances
Where is Dr. Nguyen's office located?
Dr. Douglas Nguyen's Primary Practice
1950 Sunny Crest Dr Ste 2900
Fullerton, CA 92835
(949) 364-5090
What is Dr. Nguyen's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Nguyen's National Provider Identifier (NPI) number is 1184880114.
What common questions do patients ask about Dr. Nguyen?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Nguyen
What is Dr. Douglas Nguyen's specialty?
Dr. Nguyen is a Gastroenterologist near Fullerton, CA. 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. Contact Dr. Nguyen to book an appointment today.
Is this Dr. Douglas Nguyen affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Nguyen is affiliated with Providence Mission Hospital Mission Viejo which is a Castle Connolly Top Hospital. 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
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with 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 Douglas Nguyen accepting new patients in Fullerton, CA?
Yes, Dr. Douglas Nguyen is accepting new patients at this time.
Does Dr. Douglas Nguyen offer online booking?
Please contact Dr. Nguyen's office at (949) 364-5090 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Douglas Nguyen?
Please contact Dr. Nguyen's office at (949) 364-5090 for information regarding telehealth appointment availability or for scheduling assistance.
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