Dr. Koji Kubo, MD

Dr. Koji Kubo, MD

Family Medicine  |  
Male  |  
48 y/o
19 reviews

Accepting new patients

Dr. Koji Kubo, MD is a family medicine doctor who practices in Oxnard, CA. He is 48 years old and has been practicing for 19 years. Dr. Kubo is affiliated with St. John's Regional Medical Center and St. John's Pleasant Valley Hospital....See Less

Dignity Health Medical Group - Ventura County

1700 N Rose Ave Ste 210

Oxnard, CA 93030
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Accepted insurance

  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • ChoiceCare Network
  • Cigna
  • First Health (Coventry Health Care)
  • Health Net
  • MultiPlan
  • Tricare
  • UnitedHealthCare

Learn about Dr. Kubo

Care Philosophy

Provides the highest quality of personalized care to each patient. Presents the best possible options in diagnosis and treatment from a professional viewpoint and will tailor the care for each patient based on their different backgrounds and preferences. Believes an effective communication and working with patients as partners leads to the best clinical outcomes.
...Read More


Dr. Kubo's Experience

Dr. Kubo's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Family Medicine
  • Board certified in Family Practice
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Family Medicine
  • Adolescent Medicine
  • Men's Health Medicine

Board Certifications

  • Family Practice
    Accredited by: American Board of Medical Specialties*

Conditions Treated

  • Anxiety
  • Arthritis
  • Asthma
  • Chronic Sinusitis
  • Depression
  • Diabetes
  • Emphysema
  • High Cholesterol
  • Hypertension
  • Infectious Diseases
  • Injuries
  • Obesity
  • Osteoarthritis
  • Osteoporosis
  • Pneumonia
  • Sleep Apnea


  • Abscess Incision and Drainage
  • Biopsy
  • Electrocardiogram (EKG)
  • Immunization
  • Pap Smear
  • Physical Examination
  • Skin Biopsy
  • Spirometry
  • Vaccination
  • Well Baby Care

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.


  • Tohoku University
    Medical School | Graduated 1998
  • Memorial Hermann Health System
    Residency Hospital | Completed 2006
  • University Of London
    Other Education | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Kubo has no media or publications listed.

Languages Spoken

  • English
  • Japanese
  • Spanish

Memberships & Professional Affiliations

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

St. John's Pleasant Valley Hospital

is a Recipient of a Healthgrades Excellence Award
Distinguished Hospital Award for Clinical Excellence

Hospital Quality Award

Dr. Kubo is on the medical staff at our top-rated hospital.

View Awards

Dr. Kubo's Reviews

Likelihood of recommending Dr. Kubo to family and friends
based on 19 total surveys (1 with a review)
Dr. Kubo's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Reviews (1)
in Camarillo, CA |
He is a worst doctor I ever met. He did not call back to my pharmacy for a refill till I, my pharmacy and my other doctor's office called him more than 10 times. Actually I missed some medication. When I got the medication I was charged for $900 which is cash value of the medication because he did not get a preauthorization from my insurance company. His assistant told me she sent all information to my insurance company for preauthorization but that was a lie. She never sent any paperwork.
Thank you for your feedback. Based on the record, all of the prior-authorization documents were actually sent to the insurance company in a timely manner. They still denied the request because cheaper medications need to be tried first according to their protocol. We will be happy to assist you if you have any other issues or questions.
Have you seen Dr. Koji Kubo, MD?

Visit Dr. Kubo

Dr. Kubo accepts 9 insurance carriers
  • Blue Cross Blue Shield
    Blue Care Connection PPO
  • Blue Cross Blue Shield of California
  • ChoiceCare Network
    Choice Care (Humana)
  • Cigna
    Cigna PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) EPO
  • Health Net
  • MultiPlan
  • Tricare
    TriCare for Life
  • UnitedHealthCare
    United Healthcare

Hospitals where Dr. Kubo has admitting privileges

St. John's Pleasant Valley Hospital
2309 Antonio Ave
Camarillo, CA 93010
View Hospital Profile
St. John's Regional Medical Center
1600 N Rose Ave
Oxnard, CA 93030
View Hospital Profile

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