Katherine D. Williamson
Experienced in Gastroesophageal Reflux Disease (GERD)

Dr. Katherine D. Williamson

Pediatrics
23321 El Toro Rd, Suite F, 
Lake Forest, CA 

Experienced in Gastroesophageal Reflux Disease (GERD)
23321 El Toro Rd, Suite F, 
Lake Forest, CA 
OverviewInsuranceLocationsSimilar Doctors

Overview

Katherine Williamson is a Pediatrics provider in Lake Forest, California. Dr. Williamson is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Obesity in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Delayed Growth, and Idiopathic Short Stature (ISS).

Specialties
Pediatrics
Licenses
Pediatrics in CA
Languages Spoken
English
Gender
Female

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
Find your insuranceClose

Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Health Net

Accepted plan types not found. Please verify directly with the provider.

Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Nippon Life
  • INSURANCE PLAN
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
Spectrum Priority Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
View 13 Less Insurance Carriers -

Locations

23321 El Toro Rd, Suite F, Lake Forest, CA 92630
Call: 949-388-1798
Similar Doctors
Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Maria De Leon
Family Medicine | General Practice | Geriatrics
Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Maria De Leon
Family Medicine | General Practice | Geriatrics

Bella Medical Group Inc.

2933 Whittier Blvd, 
Los Angeles, CA 
 (40.6 miles away)
323-263-2669
Languages Spoken:
English
See accepted insurances
Offers Telehealth

Maria De Leon is a primary care provider, practicing in Family Medicine and Internal Medicine in Los Angeles, California. Dr. De Leon is rated as a Distinguished provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Osteoarthritis, Maturity Onset Diabetes of the Young, High Cholesterol, and Type 2 Diabetes (T2D).

Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Yousef Mehrabi
Pediatrics
Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Yousef Mehrabi
Pediatrics
16030 Ventura Boulevard, Suite 140, 
Encino, CA 
 (58.2 miles away)
818-609-9997
Experience:
47+ years
Languages Spoken:
English
See accepted insurances
Accepting New Patients

Yousef Mehrabi is a primary care provider, practicing in Pediatrics in Encino, California. Dr. Mehrabi has been practicing medicine for over 47 years and is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Vertigo, Allergic Conjunctivitis, Urethritis, and Chronic Cough. Dr. Mehrabi is currently accepting new patients.

Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Tam T. Huynh
Pediatrics | Internal Medicine
Advanced in Gastroesophageal Reflux Disease (GERD)
Dr. Tam T. Huynh
Pediatrics | Internal Medicine

Clinic Services Of California Medical Group Inc

400 N Pepper Ave, 
Colton, CA 
 (36.9 miles away)
909-580-1000
Languages Spoken:
English
See accepted insurances
Offers Telehealth

Tam Huynh is a primary care provider, practicing in Pediatrics and Internal Medicine in Colton, California. Dr. Huynh is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Diabetic Retinopathy, Type 2 Diabetes (T2D), Gastroparesis, and Glucocorticoid-Remediable Aldosteronism.

VIEW MORE GASTROESOPHAGEAL REFLUX DISEASE (GERD) DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Williamson's expertise for a condition
ConditionClose
      • Advanced
      • Obesity in Children
        Dr. Williamson is
        Advanced
        . Learn about Obesity in Children.
        See more Obesity in Children experts
      • Experienced
      • Anemia
        Dr. Williamson is
        Experienced
        . Learn about Anemia.
        See more Anemia experts
      • Asthma in Children
        Dr. Williamson is
        Experienced
        . Learn about Asthma in Children.
        See more Asthma in Children experts
      • Auditory Processing Disorder
        Dr. Williamson is
        Experienced
        . Learn about Auditory Processing Disorder.
        See more Auditory Processing Disorder experts
      • Autism Spectrum Disorder
        Dr. Williamson is
        Experienced
        . Learn about Autism Spectrum Disorder.
        See more Autism Spectrum Disorder experts
      • Celiac Disease
        Dr. Williamson is
        Experienced
        . Learn about Celiac Disease.
        See more Celiac Disease experts
      • Chronic Rhinosinusitis with Nasal Polyps (CRSwNP)
        Dr. Williamson is
        Experienced
        . Learn about Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).
        See more Chronic Rhinosinusitis with Nasal Polyps (CRSwNP) experts
      View All 16 Experienced Conditions
      Want to save this doctor for later?
      Sign Up
      Is this your doctor?
      Find A Second Opinion
      Not sure about your diagnosis?
      Check Your Symptoms
       
       
       
       
      Learn about our expert tiers
      Learn More
      Are you the provider on this profile?
      Claim Profile
      For Patients
      • Our Story
      • How MediFind Works
      • Conditions A-Z
      • Doctor Directory
      • Symptoms Directory
      • Procedures Directory
      • Treatment Directory
      • Drug Directory
      • Infusion Center Finder
      • FAQ
      • Contact Us
      For Providers and Practices
      • Claim Your Profile
      • Newsroom
      Business Solutions
      • Provider
      • Network Solutions
      Additional Resources
      • Consumer Health Data Privacy Policy
      • Privacy Policy
      • Terms of Use
      • Advertising Policy
      • Content Policy
      Subscribe to our newsletter

      Sign up to stay informed about MediFind and get wellness sent your way.

      Close

        By subscribing, I agree to MediFind's Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.

        Bullet PinMediFind
        Follow us on
        This information is not intended as a substitute for informed medical advice. You should work with a licensed professional to diagnose and treat health conditions. We let the data speak for itself, MediFind does not endorse any healthcare providers.
        © 2026 All Rights Reserved

        Request an Appointment

        If you are experiencing a medical emergency, call 9-1-1.

        MediFind will contact the provider for your appointment request. You’ll receive status updates by email. Your provider or MediFind will reach out to you directly by phone or email to schedule your appointment or request additional information.

        Patient Details

        This information is for the patient who will be seen at the appointment.

          Close

          Returning patient? Use your address on file with the provider.

          Insurance Details

          Please provide information of the primary insurance holder as the practice may require this information to schedule.

          Insurance Provider *
          Insurance ProviderClose

          Appointments Details

          Let’s get more information about your appointment.

                  0 / 1000
                  0 / 1000
                  By pressing the Submit button you are agreeing to MediFind’s Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.