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Dr. Catherine Ngo, MD

Aliso Viejo, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Ngo, Gastroenterologist in Aliso Viejo, CA?

    Dr. Catherine Ngo, MD is a Gastroenterologist, who primarily practices in Aliso Viejo, CA with 1 additional practice location. She is board certified by the American Board of Internal Medicine. Dr. Ngo is fluent in English, Spanish, and Vietnamese, and is currently seeing new patients. Dr. Ngo’s practice accepts Cigna, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ngo’s office at (949) 770-7163.

    Is Dr. Ngo board certified in Gastroenterologist?

    Yes, Dr. Catherine Ngo, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Ngo speak?

    Dr. Ngo and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    • Vietnamese

    What conditions does Dr. Ngo treat?

    As a Gastroenterologist, Dr. Ngo 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. Ngo. 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:

    • 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:

    • Constipation
    • Outlet Dysfunction Constipation
    • Chronic Idiopathic Constipation
    • Difficulty Passing Stool
    • Infrequent Bowel Movements
    • Hard Stools
    • Pelvic Floor Dysfunction Constipation
    • Dyssynergic Defecation
    • Obstructed Defecation
    • Functional Constipation
    • Unexplained Chronic Constipation
    • Long-Term Constipation

    ICD-10 Codes:

    • K5900: Constipation, unspecified
    • K5909: Other constipation
    • K5902: Outlet dysfunction constipation
    • K5904: Chronic idiopathic constipation

    Also known as:

    • Colon Polyps
    • Other Digestive Symptoms
    • Colonic Polyps
    • Digestive Disease
    • Colorectal Polyps
    • Intestinal Polyps
    • Bowel Polyps
    • Unspecified Abdominal Symptoms
    • Other Belly Problems
    • Digestive System Issues

    ICD-10 Codes:

    • Z86010: Personal history of colon polyps
    • R198: Other specified symptoms and signs involving the digestive system and abdomen

    Also known as:

    • Difficulty Swallowing
    • Other Difficulty Swallowing
    • Swallowing Disorder
    • Dysphagia
    • Trouble swallowing
    • Painful swallowing
    • Swallowing problems

    ICD-10 Codes:

    • R1310: Dysphagia, unspecified
    • R1319: Other dysphagia

    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:

    • Abdominal Bloating
    • Gas
    • Gas in the Digestive Tract
    • Bloated Stomach
    • Swollen Belly
    • Gaseous Distension

    ICD-10 Codes:

    • R140: Abdominal distension (gaseous)

    Also known as:

    • Abnormal Bowel Movements
    • Incomplete Bowel Emptying
    • Change in Bowel Habits
    • Bowel Movement
    • Bowel Incontinence
    • Unusual stool
    • Changes in poop
    • Fecal changes
    • Feeling of Incomplete Evacuation
    • Unsatisfied Bowel Movement
    • Tenesmus
    • Altered Bowel Habits
    • Irregular Bowel Movements
    • Changes in Pooping

    ICD-10 Codes:

    • R195: Other fecal abnormalities
    • R150: Incomplete defecation
    • R194: Change in bowel habit

    Also known as:

    • Complete Bowel Incontinence
    • Bowel Incontinence
    • Full fecal incontinence
    • Total loss of bowel control
    • Severe accidental bowel leakage

    ICD-10 Codes:

    • R159: Full incontinence of feces

    Also known as:

    • Diaphragmatic Hernia
    • Hernia
    • Hiatal Hernia
    • Hernia of the Diaphragm

    ICD-10 Codes:

    • K449: Diaphragmatic hernia without obstruction or gangrene

    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

    Also known as:

    • Other Pre-Procedure Examination
    • Various pre-op checks
    • Miscellaneous pre-surgery exams
    • Other pre-treatment assessments

    ICD-10 Codes:

    • Z01818: Encounter for other preprocedural examination

    Does Dr. Ngo accept my insurance?

    Dr. Ngo accepts most major insurance plans. Important: Please call our office at (949) 770-7163 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Ngo accept in Aliso Viejo, CA?

    Dr. Ngo in Aliso Viejo, 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 Shield of California

    • CalOptima

    • CVS Health (formerly Aetna)

    • Directors Guild of America Employees

    • Elevance Health Inc. (formerly Anthem)

    • Express Scripts

    • Hoag Memorial Hospital Presbyterian

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Ngo's office located?

    Dr. Catherine Ngo's Primary Practice

    26671 Aliso Creek Rd Ste 101

    Aliso Viejo, CA 92656

    (949) 770-7163

    Get Directions

    Dr. Catherine Ngo's Practice 2

    24221 Calle de la Louisa Ste 300

    Laguna Hills, CA 92653

    (949) 770-7163

    Get Directions

    What is Dr. Ngo's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Ngo's National Provider Identifier (NPI) number is 1558531129.

    What common questions do patients ask about Dr. Ngo?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Ngo

    What is Dr. Catherine Ngo's specialty?

    Dr. Ngo is a Gastroenterologist near Aliso Viejo, 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. Ngo to book an appointment today.

    Is this Dr. Catherine Ngo affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Ngo is affiliated with Hoag Hospital Newport Beach, Hoag Hospital Newport Beach, Hoag Hospital Newport Beach 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

    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 Catherine Ngo accepting new patients in Aliso Viejo, CA?

    Yes, Dr. Catherine Ngo is accepting new patients at this time.

    Does Dr. Catherine Ngo offer online booking?

    Please contact Dr. Ngo's office at (949) 770-7163 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Catherine Ngo?

    Please contact Dr. Ngo's office at (949) 770-7163 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Catherine Ngo have?

    Dr. Catherine Ngo is certified by the American Board of Internal Medicine.

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