Dr. Masaharu Osato, MD

Dr. Masaharu Osato, MD

Gastroenterology  ·  
Male  ·  
Age 63
Dr. Masaharu Osato, MD is a gastroenterology specialist in Torrance, CA and has been practicing for 32 years. He graduated from Loma Linda Univ Sch Of Med in 1983 and specializes in gastroenterology.

3440 Lomita Blvd Ste 320

Torrance, CA 90505

Contact Information

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Cigna
  • First Health (Coventry Health Care)

*Please verify this information when scheduling an appointment.

Learn about Dr. Osato

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Top Care Areas

See how frequently Dr. Osato performs your care needs compared to other doctors.

Abdominal Pain
very high
more than 98% of peers
Abdominal Disorders
very high
more than 97% of peers
Gastroesophageal Reflux Disease (GERD)
very high
more than 96% of peers

Dr. Osato's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

1  Specialties

  • Gastroenterology

2  Board Certifications

  • Gastroenterology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

32  Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Abscess
  • Anal or Rectal Pain
  • Anal Prolapse
  • Anemia
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulosis, Intestinal
  • Dysphagia
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophagitis
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Diseases
  • Hemorrhoids
  • Hernia
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Reflux Esophagitis
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Unexplained Weight Loss


Read Less

3  Procedures

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Loma Linda Univ Sch Of Med
    Medical School | Graduated 1983
  • Kettering Med Ctr
    Internship Hospital | Completed 1984
  • Kettering Med Ctr
    Residency Hospital | Completed 1986
  • Loma Linda University
    Residency Hospital | Completed 1987
  • Los Angeles County Harbor-Ucla Medical Center
    Fellowship Hospital | Completed 2001

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Osato has no media or publications listed.

Languages Spoken

  • English
  • Japanese

Memberships & Professional Affiliations

Dr. Osato does not have any memberships or affiliations listed. If you are Dr. Osato and would like to add memberships or affiliations, please update your profile.

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