JW
Accepting patients
Who is Dr. Williams, Gastroenterologist in San Jose, CA?
Dr. Jason Williams, MD is a Gastroenterologist, who primarily practices in San Jose, CA. He is board certified by the American Board of Internal Medicine. Dr. Williams graduated from Duke University School of Medicine. Dr. Williams is fluent in English, and is currently seeing new patients. Dr. Williams’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. Williams’s office at (408) 885-7947.
Where did Dr. Williams go to medical school and complete their residency?
Medical School: Duke University School of Medicine
Is Dr. Williams board certified in Gastroenterologist?
Yes, Dr. Jason Williams, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Williams speak?
Dr. Williams and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Williams treat?
As a Gastroenterologist, Dr. Williams 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. Williams. 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:
- Cirrhosis
- Alcoholic Cirrhosis with Fluid Buildup
- Alcoholic Cirrhosis
- Alcohol Use Disorder (AUD)
- Cryptogenic cirrhosis
- Liver scarring
- End-stage liver disease
- Chronic liver failure
- Alcoholic cirrhosis with ascites
- Alcohol-induced cirrhosis with fluid
- Liver scarring with abdominal fluid
- Alcohol-induced cirrhosis
- End-stage alcoholic liver disease
- Severe alcoholic liver scarring
ICD-10 Codes:
- K7460: Unspecified cirrhosis of liver
- K7031: Alcoholic cirrhosis of liver with ascites
- K7030: Alcoholic cirrhosis of liver without ascites
- K7469: Other cirrhosis of liver
Also known as:
- Chronic Hepatitis B
- Hepatitis B
- Long-term Hepatitis B
- Persistent Hepatitis B
- Hep B
ICD-10 Codes:
- B181: Chronic viral hepatitis B without delta-agent
Also known as:
- Rectal Bleeding
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
- Melena
- Black Stools
- Upper GI Bleed Signs
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
- K921: Melena
Also known as:
- Abnormal Bowel Movements
- Change in Bowel Habits
- Bowel Movement
- Unusual stool
- Changes in poop
- Fecal changes
- Altered Bowel Habits
- Irregular Bowel Movements
- Changes in Pooping
ICD-10 Codes:
- R195: Other fecal abnormalities
- R194: Change in bowel habit
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
- Upper Middle Abdominal Pain
- Stomach Ache
- Belly Pain
- Stomach Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R109: Unspecified abdominal pain
- R1013: Epigastric pain
Also known as:
- Benign Ascending Colon Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous ascending colon growth
- Ascending colon adenoma
- Ascending colon benign tumor
ICD-10 Codes:
- D122: Benign neoplasm of ascending colon
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:
- 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:
- 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:
- Other Abnormal Enzyme Levels
- Unspecified high enzymes
- Various enzyme abnormalities
- Abnormal serum enzyme levels
ICD-10 Codes:
- R748: Abnormal levels of other serum enzymes
Also known as:
- Fluid in Abdomen
- Liver Disease
- Ascites
- Abdominal fluid buildup
- Peritoneal fluid
ICD-10 Codes:
- R188: Other ascites
Also known as:
- Hemorrhoidal Skin Tags
- Hemorrhoids
- Anal skin tags
- Perianal skin tags
- Leftover hemorrhoid skin
ICD-10 Codes:
- K644: Residual hemorrhoidal skin tags
Which procedures does Dr. Williams perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Jason Williams 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. Williams' office.
Does Dr. Williams accept my insurance?
Dr. Williams accepts most major insurance plans. Important: Please call our office at (408) 885-7947 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Williams accept in San Jose, CA?
Dr. Williams in San Jose, 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
Central California Alliance for Health
Conifer Health Solutions
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
OptumRx
Other Provider Networks
Santa Clara Family Health Plan
View All Insurances
Where is Dr. Williams' office located?
What is Dr. Williams's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Williams's National Provider Identifier (NPI) number is 1083894257.
What common questions do patients ask about Dr. Williams?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Williams
What is Dr. Jason Williams's specialty?
Dr. Williams is a Gastroenterologist near San Jose, 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. Williams to book an appointment today.
Is this Dr. Jason Williams affiliated with a ranked Castle Connolly Top Hospital?
No, Williams is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Santa Clara Valley 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 Jason Williams accepting new patients in San Jose, CA?
Yes, Dr. Jason Williams is accepting new patients at this time.
Does Dr. Jason Williams offer online booking?
Please contact Dr. Williams's office at (408) 885-7947 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Jason Williams?
Please contact Dr. Williams's office at (408) 885-7947 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Jason Williams have?
Dr. Jason Williams is certified by the American Board of Internal Medicine.
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