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Dr. Andrew Nguyen, MD

Downey, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Nguyen, Gastroenterologist in Downey, CA?

    Dr. Andrew Nguyen, MD is a Gastroenterologist, who primarily practices in Downey, CA with 1 additional practice location. Dr. Nguyen is fluent in English, French, Spanish, and Vietnamese, and is currently seeing new patients. Dr. Nguyen’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nguyen’s office at (800) 926-8273.

    What languages does Dr. Nguyen speak?

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

    • English

    • French

    • Spanish

    • 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:

    • Abdominal Pain
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R109: Unspecified abdominal pain

    Also known as:

    • Anemia
    • Iron Deficiency Anemia
    • Iron
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency
    • Anemia from Iron Lack
    • Low Iron Anemia
    • Sideropenic Anemia

    ICD-10 Codes:

    • D649: Anemia, unspecified
    • D509: Iron deficiency anemia, unspecified

    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:

    • Abnormal Bowel Movements
    • Bowel Movement
    • Unusual stool
    • Changes in poop
    • Fecal changes

    ICD-10 Codes:

    • R195: Other fecal abnormalities

    Also known as:

    • Obesity
    • Take Charge of Your Health: A Guide for Teenagers
    • Excess Weight
    • Being Overweight
    • High BMI

    ICD-10 Codes:

    • E669: Obesity, unspecified

    What procedures does Dr. Nguyen perform?

    As a Gastroenterologist, Dr. Nguyen 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. 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:

    • Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening

    CPT Codes:

    • 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
    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    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:

    • Diagnostic Upper Endoscopy with Biopsy
    • Colonoscopy with Injections
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance

    Also known as:

    • Abdominal Fluid Drainage with Imaging Guidance
    • Guided Abdominal Paracentesis
    • Ascites Drainage with Ultrasound
    • Fluid Removal from Belly

    CPT Codes:

    • 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance

    Does Dr. Nguyen accept my insurance?

    Dr. Nguyen accepts most major insurance plans. Important: Please call our office at (800) 926-8273 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Nguyen accept in Downey, CA?

    Dr. Nguyen in Downey, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Health Plan

    • All Other Third Party

    • Bright Health

    • Centene

    • City of Los Angeles

    • Crown Cork and Seal Company

    • CVS Health (formerly Aetna)

    • Humana

    • Other Provider Networks

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Nguyen's office located?

    Dr. Andrew Nguyen's Primary Practice

    11500 Brookshire Ave

    Downey, CA 90241

    (800) 926-8273

    Get Directions

    Dr. Andrew Nguyen's Practice 2

    25150 Hancock Ave Ste 210

    Murrieta, CA 92562

    Get Directions

    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 1154784783.

    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. Andrew Nguyen's specialty?

    Dr. Nguyen is a Gastroenterologist near Downey, 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. Andrew Nguyen affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Nguyen is affiliated with PIH Health Whittier Hospital, Adventist Health Glendale 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 Andrew Nguyen accepting new patients in Downey, CA?

    Yes, Dr. Andrew Nguyen is accepting new patients at this time.

    Does Dr. Andrew Nguyen offer online booking?

    Please contact Dr. Nguyen's office at (800) 926-8273 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Andrew Nguyen?

    Please contact Dr. Nguyen's office at (800) 926-8273 for information regarding telehealth appointment availability or for scheduling assistance.

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