of
JK

John Koh, MD

Dr. Koh is a gynecologist in the Oxnard area. He is affiliated with Adventist Health Simi Valley.
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Conditions treated

Tap to see related services for each condition and more details about our calculations.

Top 25%
29 doctors
Top 15%
30 doctors
Top 5%
14 doctors
Dr. Koh saw more vaginitis patients than 95% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
27 doctors
Top 15%
27 doctors
Top 5%
13 doctors
Dr. Koh saw more menopause patients than 95% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
7 doctors
Top 15%
8 doctors
Top 5%
3 doctors
Dr. Koh saw ingrown hair patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Koh saw more HPV patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
5 doctors
Top 15%
5 doctors
Top 5%
2 doctors
Dr. Koh saw more urinary urge incontinence patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
21 doctors
Top 15%
20 doctors
Top 5%
10 doctors
Dr. Koh saw skin tag patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
25 doctors
Top 15%
25 doctors
Top 5%
12 doctors
Dr. Koh saw more bacterial vaginosis (BV) patients than 95% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
15 doctors
Top 15%
16 doctors
Top 5%
7 doctors
Dr. Koh saw more yeast infection patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
49 doctors
Top 15%
48 doctors
Top 5%
24 doctors
Dr. Koh saw more sexually transmitted infection (STI) patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
111 doctors
Top 15%
112 doctors
Top 5%
55 doctors
Dr. Koh saw pain patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
8 doctors
Top 15%
8 doctors
Top 5%
4 doctors
Dr. Koh saw more bleeding after menopause patients than 95% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
60 doctors
Top 15%
59 doctors
Top 5%
29 doctors
Dr. Koh saw more urinary tract infection (UTI) patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
5 doctors
Top 5%
2 doctors
Dr. Koh saw more genital herpes patients than 95% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
4 doctors
Top 5%
1 doctor
Dr. Koh saw premenstrual syndrome (PMS) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
6 doctors
Top 15%
7 doctors
Top 5%
3 doctors
Dr. Koh saw more polycystic ovarian syndrome (PCOS) patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
28 doctors
Top 15%
28 doctors
Top 5%
14 doctors
Dr. Koh saw osteoporosis patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
25 doctors
Top 15%
24 doctors
Top 5%
12 doctors
Dr. Koh saw more herpes patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
25 doctors
Top 15%
26 doctors
Top 5%
12 doctors
Dr. Koh saw more urinary incontinence patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
36 doctors
Top 15%
36 doctors
Top 5%
17 doctors
Dr. Koh saw more hormonal imbalance patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
13 doctors
Top 15%
12 doctors
Top 5%
6 doctors
Dr. Koh saw more menstrual cramps patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
13 doctors
Top 15%
12 doctors
Top 5%
6 doctors
Dr. Koh saw more fibroids patients than 85% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
8 doctors
Top 15%
7 doctors
Top 5%
3 doctors
Dr. Koh saw stress incontinence patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
7 doctors
Top 15%
7 doctors
Top 5%
3 doctors
Dr. Koh saw vaginal prolapse patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
12 doctors
Top 15%
12 doctors
Top 5%
5 doctors
Dr. Koh saw more ovarian cyst patients than 75% of similar doctors in the Oxnard area in 2014–2018. Learn more.

Related services provided

Top 25%
66 doctors
Top 15%
66 doctors
Top 5%
32 doctors
Dr. Koh saw anemia patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
24 doctors
Top 15%
24 doctors
Top 5%
12 doctors
Dr. Koh saw abscess patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
2 doctors
Dr. Koh saw uterine prolapse patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
15 doctors
Top 15%
16 doctors
Top 5%
7 doctors
Dr. Koh saw irregular periods patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

Top 25%
62 doctors
Top 15%
63 doctors
Top 5%
31 doctors
Dr. Koh saw anxiety patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.
Top 25%
93 doctors
Top 15%
94 doctors
Top 5%
46 doctors
Dr. Koh saw digestive tract conditions patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Oxnard area. Learn more.

Related services provided

C-section rate

Dr. Koh’s C-section rate is higher than the rate we predicted for his mix of cases and patients.
Dr. Koh 100%
Predicted for his patients 48%
Decision factor

Compared to predicted rates calculated for each doctor’s unique mix of cases and patients

  • Lower than our predicted rate
  • Higher than our predicted rate
  • Similar to our predicted rate

To help you understand how Dr. Koh’s C-section rate compares to a typical pregnancy doctor:

  1. We first measure the actual C-section rate for the pregnant patients Dr. Koh treats.
  2. We then analyze the typical practices of all other doctors in the United States who deliver babies, using a data-driven model to predict the C-section rate for patients like Dr. Koh’s.

By comparing these two numbers, you can see whether Dr. Koh’s C-section rate is lower than, similar to, or higher than predicted.

This prediction adjusts based on the types of patients the doctor sees, so a doctor who treats sicker patients may have a different predicted rate than a doctor who treats healthier patients.

Locations

Dr. Koh sees patients and can be reached at the following location.

Office
1147 Red Tail Way
Simi Valley, CA 93065
2,507 miles away

Reviews

Credentials
  • University of Colorado School of Medicine
    MEDICAL EDUCATION, 1968
  • Yonsei University College of Medicine
    MEDICAL EDUCATION, 1968
  • SUNY Health Science Center at Brooklyn Program
    RESIDENCY

Hospital affiliations

Dr. Koh is able to admit and treat patients at the following hospitals.

  • Adventist Health Simi Valley
    B
    Hospital safety grade (Fall 2018)

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arkansas Blue Cross and Blue Shield
  • Assurant Health
  • Blue Cross Blue Shield of Arizona
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Alabama
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Illinois
  • Blue Cross and Blue Shield of Kansas
  • Blue Cross and Blue Shield of Kansas City
  • Blue Cross and Blue Shield of Louisiana
  • Blue Cross and Blue Shield of Minnesota
  • Blue Cross and Blue Shield of Mississippi
  • Blue Cross and Blue Shield of Montana
  • Blue Cross and Blue Shield of Nebraska
  • Blue Cross and Blue Shield of New Mexico
  • Blue Cross and Blue Shield of North Dakota
  • Blue Cross and Blue Shield of Oklahoma
  • Blue Cross and Blue Shield of Rhode Island
  • Blue Cross and Blue Shield of Texas
  • Blue Cross and Blue Shield of Vermont
  • Blue Cross and Blue Shield of Wyoming
  • Blue Cross of Idaho
  • Blue Shield of California
  • BlueCross BlueShield of South Carolina
  • BlueCross BlueShield of Tennessee
  • CareFirst BlueCross BlueShield
  • Cigna
  • Coventry Health Care
  • Cross and Blue Shield of North Carolina
  • Group Health Cooperative
  • Hawaii Medical Assurance Association
  • Health Net
  • HealthCare Partners
  • HealthPartners
  • HealthSCOPE Benefits
  • Heritage Provider Network
  • Highmark Blue Cross Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • Medica
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • Premera Blue Cross
  • Regence Blue Cross Blue Shield
  • SynerMed
  • TRICARE
  • United Healthcare
  • Wellmark Blue Cross and Blue Shield