JG
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Gubatan, Gastroenterologist in Stanford, CA?
Dr. John Mark Gubatan, MD is a Gastroenterologist, who primarily practices in Stanford, CA with 1 additional practice location. Dr. Gubatan graduated from Harvard Medical School, Boston, Massachusetts. Dr. Gubatan is fluent in English, French, Spanish, and Tagalog, and is currently seeing new patients. Dr. Gubatan’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gubatan’s office at (650) 723-4000.
Where did Dr. Gubatan go to medical school and complete their residency?
Medical School: Harvard Medical School, Boston, Massachusetts
What languages does Dr. Gubatan speak?
Dr. Gubatan and their clinical team can communicate with patients in the following languages:
English
French
Spanish
Tagalog
What conditions does Dr. Gubatan treat?
As a Gastroenterologist, Dr. Gubatan 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. Gubatan. 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:
- Ulcerative Pancolitis
- Ulcerative Colitis
- Chronic Pancolitis
- Extensive Ulcerative Colitis
- Inflammatory Bowel Disease (IBD)
- Chronic Pancolitis with Complications
- Extensive Ulcerative Colitis with Complications
- Inflammatory Bowel Disease (IBD) with Complications
ICD-10 Codes:
- K5100: Ulcerative (chronic) pancolitis without complications
- K51019: Ulcerative (chronic) pancolitis with unspecified complications
Also known as:
- Crohn's Disease Affecting Small and Large Intestines
- Crohn's Disease
- Crohn’s Disease
- Complicated Crohn's Disease', 'Inflammatory Bowel Disease (IBD) with Complications', 'Panenteric Crohn's with Complications
- Panenteric Crohn's Disease
- Crohn's of Both Bowels', 'Generalized Crohn's Disease
ICD-10 Codes:
- K50819: Crohn's disease of both small and large intestine with unspecified complications
- K5080: Crohn's disease of both small and large intestine without complications
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:
- Hemorrhoids
- Piles
- Anal veins
- Swollen rectal veins
ICD-10 Codes:
- K648: Other hemorrhoids
Also known as:
- Non-Infectious Gastroenteritis and Colitis
- Digestive Disease
- Inflammation of Stomach and Intestines
- Non-Bacterial Colitis
- Gut Inflammation
ICD-10 Codes:
- K529: Noninfective gastroenteritis and colitis, unspecified
What procedures does Dr. Gubatan perform?
As a Gastroenterologist, Dr. Gubatan 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. Gubatan. 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
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
CPT Codes:
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
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
- Flexible Sigmoidoscopy with Biopsy
- Colorectal Cancer Screening Tests
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
Does Dr. Gubatan accept my insurance?
Dr. Gubatan accepts most major insurance plans. Important: Please call our office at (650) 723-4000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gubatan accept in Stanford, CA?
Dr. Gubatan in Stanford, 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
Central California Alliance for Health
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Medicaid
Medicare
Santa Clara Family Health Plan
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Gubatan's office located?
Dr. John Mark Gubatan's Primary Practice
300 Pasteur Dr
Stanford, CA 94305
(650) 723-4000
What is Dr. Gubatan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gubatan's National Provider Identifier (NPI) number is 1215340674.
What common questions do patients ask about Dr. Gubatan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gubatan
What is Dr. John Mark Gubatan's specialty?
Dr. Gubatan is a Gastroenterologist near Stanford, 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. Gubatan to book an appointment today.
Is this Dr. John Mark Gubatan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Gubatan is affiliated with Stanford Health Care - Stanford Hospital, Memorial Medical Center - Modesto, CA, Stanford Health Care - ValleyCare, Community Regional Medical Center - Fresno 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 John Mark Gubatan accepting new patients in Stanford, CA?
Yes, Dr. John Mark Gubatan is accepting new patients at this time.
Does Dr. John Mark Gubatan offer online booking?
Please contact Dr. Gubatan's office at (650) 723-4000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Mark Gubatan?
Please contact Dr. Gubatan's office at (650) 723-4000 for information regarding telehealth appointment availability or for scheduling assistance.
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