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Dr. Derrick Siao, MD

Santa Clara, CA

Accepting patients

    Who is Dr. Siao, Gastroenterologist in Santa Clara, CA?

    Dr. Derrick Siao, MD is a Gastroenterologist, who primarily practices in Santa Clara, CA. He is board certified. Dr. Siao is fluent in English, and is currently seeing new patients. Dr. Siao’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Siao’s office at (408) 851-1000.

    What languages does Dr. Siao speak?

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

    • English

    What conditions does Dr. Siao treat?

    As a Gastroenterologist, Dr. Siao 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. Siao. 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:

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

    ICD-10 Codes:

    • R109: Unspecified abdominal pain

    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:

    • Crohn's Disease of the Small Intestine
    • Crohn's Disease of the Large Intestine
    • Crohn's Disease
    • Crohn’s Disease
    • Regional Enteritis
    • Inflammatory Bowel Disease (IBD)
    • Ileitis
    • Large Bowel Crohn's
    • Crohn's Colitis', 'Colonic Crohn's Disease

    ICD-10 Codes:

    • K5000: Crohn's disease of small intestine without complications
    • K5010: Crohn's disease of large intestine without complications

    Also known as:

    • Constipation
    • Difficulty Passing Stool
    • Infrequent Bowel Movements
    • Hard Stools

    ICD-10 Codes:

    • K5900: Constipation, 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:

    • Rectal Bleeding
    • Gastrointestinal Bleeding
    • Gastrointestinal (GI) Bleeding
    • Anal Bleeding
    • Blood in Stool
    • Lower GI Bleed

    ICD-10 Codes:

    • K625: Hemorrhage of anus and rectum

    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:

    • Diarrhea
    • Loose stools
    • Runny poop
    • Frequent bowel movements

    ICD-10 Codes:

    • R197: Diarrhea, unspecified

    Also known as:

    • Indigestion
    • Gas in the Digestive Tract
    • Indigestion (Dyspepsia)
    • Dyspepsia
    • Upset Stomach
    • Stomach Discomfort

    ICD-10 Codes:

    • K30: Functional dyspepsia

    Also known as:

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

    ICD-10 Codes:

    • R1310: Dysphagia, unspecified

    Also known as:

    • Iron Deficiency Anemia
    • Anemia
    • Iron
    • Anemia from Iron Lack
    • Low Iron Anemia
    • Sideropenic Anemia

    ICD-10 Codes:

    • D509: Iron deficiency anemia, unspecified

    Also known as:

    • Complete Intestinal Obstruction
    • Complete Bowel Blockage
    • Full Intestinal Blockage
    • Severe Bowel Obstruction

    ICD-10 Codes:

    • K56601: Complete intestinal obstruction, unspecified as to cause

    Also known as:

    • Colon Polyps
    • Colonic Polyps
    • Colorectal polyps
    • Bowel polyps
    • Intestinal polyps

    ICD-10 Codes:

    • K635: Polyp of colon

    Also known as:

    • Hemorrhoids
    • Piles
    • Anal veins
    • Swollen rectal veins

    ICD-10 Codes:

    • K648: Other hemorrhoids

    Also known as:

    • Large Intestine Diverticulosis
    • Diverticulosis and Diverticulitis
    • Diverticular Disease
    • Colon Diverticula
    • Pockets in the Colon

    ICD-10 Codes:

    • K5730: Diverticulosis of large intestine without perforation or abscess without bleeding

    Also known as:

    • Other Digestive Symptoms
    • Digestive Disease
    • Unspecified Abdominal Symptoms
    • Other Belly Problems
    • Digestive System Issues

    ICD-10 Codes:

    • R198: Other specified symptoms and signs involving the digestive system and abdomen

    Also known as:

    • Irritable Bowel Syndrome (IBS)
    • Irritable Bowel Syndrome
    • Spastic Colon
    • Functional Bowel Disorder
    • IBS

    ICD-10 Codes:

    • K589: Irritable bowel syndrome, unspecified

    Does Dr. Siao accept my insurance?

    Dr. Siao accepts most major insurance plans. Important: Please call our office at (408) 851-1000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Siao accept in Santa Clara, CA?

    Dr. Siao in Santa Clara, 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

    • Contra Costa

    • Hill Physicians Medical Group

    • Kaiser Permanente

    • Medicare

    • OptumRx

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Siao's office located?

    Dr. Derrick Siao's Primary Practice

    710 Lawrence Expy

    Santa Clara, CA 95051

    (408) 851-1000

    Get Directions

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

    Dr. Siao's National Provider Identifier (NPI) number is 1073849261.

    What common questions do patients ask about Dr. Siao?

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

    What is Dr. Derrick Siao's specialty?

    Dr. Siao is a Gastroenterologist near Santa Clara, 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. Siao to book an appointment today.

    Is this Dr. Derrick Siao affiliated with a ranked Castle Connolly Top Hospital?

    No, Siao is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Kaiser Permanente - Santa Clara Medical Center. Castle Connolly Top Hospitals 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 Derrick Siao accepting new patients in Santa Clara, CA?

    Yes, Dr. Derrick Siao is accepting new patients at this time.

    Does Dr. Derrick Siao offer online booking?

    Please contact Dr. Siao's office at (408) 851-1000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Derrick Siao?

    Please contact Dr. Siao's office at (408) 851-1000 for information regarding telehealth appointment availability or for scheduling assistance.

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