MacArthur Gastroenterology Inc.
MacArthur Gastroenterology Inc.

expert endOSCOPY & hepatology care

We Accept Most Insurances

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Comprehensive GI & Hepatology Patient Services

MacArthur Gastroenterology (MacArthur  GI) is a specialized community colonoscopy and hepatology center located at 10520 MacArthur Blvd., in Oakland, CA 94605 USA. MacArthur GI features expanded patient procedures in a modernized and fully equipped  Endoscopy Suite. As a newly renovated and comprehensive and specialized medical facility. MacArthur GI provides the greater Bay Area community with a medical practice that seeks to improve patient health and wellness through a preventative medicine approach to patient care.

Dr. Ralph L. Peterson: Chief Medical Science Officer

MacArthur GI and Hepatology Mission

On a global basis, provide expert diagnosis and patient care of gastrointestinal and hepatitis diseases and illnesses utilizing state-of-the-art technology and  advanced computer patient testing  and treatment software applications. 

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Ralph L. Peterson, MD, Chief Medical Science Officer

Over 37 years of professional experience, with more than 22 years specializing in Gastroenterology (GI) and Internal Medicine (IM)


12 years in Hepatology patient care: Achieved  a cure rate of over 90% in in the treatment of Hepatitis B & C cases.    


Sits on advisory boards of top pharmaceutical corporations such as Gilead. 


Is also a coveted speaker and medical presenter of procedures and cures of Hepatitis B & C for Gilead.  


Recognized and presented  awards from the American Cancer Society


Medical Team Leader in Sierra Leone evaluating medical needs and necessary medicines for numerous provinces to determine best medical applications that could be initiated throughout the country. 


Currently assisting, as a volunteer, physicians in Bohol, Philippines on instructive procedures and cures for treatment of Gastrointestinal diseases and Hepatitis B & C


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More about dr. peterson

MacArthur Gastrointestinal (Mac gi) Endoscopy SERVICES

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MacArthur GI Suite

 Struggles with various diseases of the digestive tract are encountered every day by millions of Americans. GI tract diseases range from the daily discomfort of heartburn to much more serious and life-threatening illnesses such as colon and liver cancers. At Mac GI, no procedure or administrative function is considered unimportant to us. We are happy to serve you as our patient, as well as serve any member of your family; answering any questions they may have about you medical disposition and care. [Requires the patient's written authorization to release your medical information, including procedures and care]. 

MacArthur Endoscopy Procedures / Services

Mac GI Center is commonly known throughout Northern California for treating a multitude of gastrointestinal issues. All clinic procedure are available for language translation from English to Spanish, Vietnamese, Cantonese, Tagalog and Mien speaking patients. Its modernized facility incorporates the most advanced diagnostic technology, including state-of-the-art endoscopy. The medical staff at Mac GI is well equipped in performing cutting-edge treatments, including, advanced therapeutic endoscopy:


Upper GI Endoscopy (EGD):


EGD, is a visual examination of the upper intestinal tract using lights, flexible fiber optic or video endoscope. The upper gastrointestinal tract begins at the mouth and continues with the esophagus which carries food to the stomach. The "J-shapes tube secretes acid and churns food into small pieces, due to factors related to diet, environment and heredity.


Upper GI Tract  (UGIT):


UGIT, is the site of numerous disorders. A variety of symptoms and diseases can develop causing pain and discomfort. Upper GI Endoscopy also helps in diagnosing and treating the following conditions:


  • Heartburn
  • Difficulty Swallowing
  • Upper Abdominal Pain
  • Indigestion, 
  • Intestinal bleeding
  • Tumors
  • Esophagitis
  • Gastritis
  • Colon cancer
  • Polyp removal
  • Colitis
  • Diverticulosis / Diverticulitis
  • Anemia
  • Abnormal Barium Enema
  • Unexplained Weight Loss
  • Epigastric Burning
  • Ulcers
  • Hepatitis B & C

colonoscopy / flexible sigmoidoscopy

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Colonoscopy

 "Colonoscopy is a procedure in which a doctor uses a colonoscope or scope, to look inside your rectum and colon.  Colonoscopy can show irritated and swollen tissue, ulcers, polyps and cancer. For more information visit National Institute of Health (NIH).":  https://www.niddk.nih.gov/health-information/diagnostic-tests/colonoscopy 

Flexible Sigmoidoscopy

 Flexible sigmoidoscopy is a procedure in which a trained medical professional uses a flexible, narrow tube with a light and tiny camera on one end, called a sigmoidoscope or scope, to look inside your rectum and lower colon, also called the sigmoid colon and descending colon. For more information visit National Institute of Health." (NIH):  https://www.niddk.nih.gov/health-information/diagnostic-tests/flexible-sigmoidoscopy 

Doctor / Patient Testimonials

 "I appreciate the quality of professional care that my patients receive from Dr. Peterson and his highly qualified staff." ...Dr. H. Geoffrey Watson - Watson Wellness Center, Oakland, CA.
"I like his professionalism and genuine care with my GI problems. I appreciate his willingness to help me. I feel much better with the treatment I received from Dr. Peterson." ...Lorena Rodriguez, Loan Officer, Oakland, CA.

Understanding Gastroenterology

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What Is Gastroenterology?

"Gastroenterology is a branch of science which deals with the study of disorders of the digestive system. The diseases which affect the gastrointestinal tract including various organs from mouth to anus, along the alimentary canal are focused by this branch of study. Usually the persons working in this field are said to be gastroenterologists would  have usually completed the eight years of premedical and medical education program, the year long internship, if this is not a part of the residency, three years of an internal medicine residence course, and two to three years in the gastroenterology fellowship." More information on gastroenterology found at: https://www.medicinenet.com/script/main/art.asp?articlekey=31349 

Medical Specialist in Gastroenterology

 Doctors who are specialists in GI radiology, hepatobillary or gastric medicine. or GI oncology will also then complete  a two-or-three-year fellowship in this specific field. One should not confuse gastroenterological surgery because Gastroenterology is actually not the same as gastroenterological surgery, or of colon and rectal (proctology) surgery, which are specialty branches of general surgery. A very important progress and development have been made in the last fifty years, contributing to rapid expansion of its scope. Hepatology, or hepatobiliary medicine, encompasses the study and know the function of the pancreas, biliary and liver tree and is traditionally considered a sub-specialty. When a person begins chewing food, digestive enzymes in the saliva break down the food before it is swallowed.  

Brief Understanding of GI Tract and Digestion

Several body parts, including the mouth, esophagus, stomach, small intestine, large intestine, and anus, make up the digestive (gastrointestinal) tract. The digestive process begins when food enters the mouth. Gastrointestinal disorders occur when the digestive tract (gastrointestinal) does not function properly. As a result, patients may have difficulty digesting food, absorbing nutrients, or having normal bowel movements. The esophagus is a muscular tube that carries food and liquids from the mouth to the stomach. The stomach contains harsh enzymes that break down food so it can be absorbed by the body. Food the enters the small intestine, which contains three parts: The ......

Understanding Hepatology

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What Is Hepatology?

 "Hepatology is a branch of medicine concerned  with the study, prevention, diagnosis and management of diseases that  affect the liver, gallbladder, biliary tree and pancreas. The term hepatology is derived from the Greek words “hepatikos” and “logia,” which mean liver and study, respectively.  Hepatitis affects millions of individuals globally and is associated  with several poor outcomes including liver transplant and liver cancer.  In particular, hepatitis B and hepatitis C are major causes of liver  cancer, while alcohol abuse has been linked to conditions such as  cirrhosis and other serious complications. The conditions hepatologists  deal with most frequently are viral hepatitis and alcohol-related liver  disease." More information on hepatology found at: https://www.news-medical.net/health/What-is-Hepatology.aspx

MacArthur GI HCV Medical Meritocracy

 In 2007, Dr. Peterson’s medical clinic started initial testing for HCV to increase the awareness of individuals at risk and to provide appropriate education and referrals. The MacArthur medical facility began HCV treatments in 2013, and Dr. Peterson became the first medical doctor in the California County of Alameda, to write prescriptions (RX) and have patients approved for the first complete treatment for HCV which required taking only a single pill per day.    

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* N2M Research & Development Laboratory (N2M R&D Labs) is an operating company of MacArthur GI and the developer of 1440 Vibrational Energetic Spray Supplements. 1440: There are 1440 minutes in each day. Make them count.


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1440 Vibrational Energetic Spray Supplements: Safe for both human and animal consumption.

1440 Vibrational Energetic Spray Supplements: Safe for both human and animal consumption.

MAC GI CONTACT INFORMATION BELOW

Our newly renovated medical facility provides the greater San Francisco/Oakland/San Jose Bay Area communities with a specialized medical practice that seeks to improve patient health and wellness through a preventive medicine approach to surgical procedures and followup patient  care.


All medical services are available for language translation from English to:

Spanish; Vietnamese; Cantonese; Tagalog; and Mien speaking patients.


Physician Referral Process:


Appointments may be scheduled by patients with a referral from their attending physician; or, a call from the attending physicians offices.


Referral Physician Provides The Following:


* Relevant lab work

* Medications and progress notes

* Insurance information

*  Phone/Fax numbers of referral physicians treating patients


Thank you for allowing us to care for you.

MacArthur Gastroenterology Inc. (Mac GI)

10520 MacArthur Blvd., Oakland, CA 94605

Office: (501) 562-7467 Fax: (510) 227-6895