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Dr. Gregory Johnson, MD

Gastroenterology
3.7 (20)
Map Pin Small Thousand Oaks, CA
Accepting new patients

Overview of Dr. Gregory Johnson, MD

Dr. Gregory Johnson, MD is a Gastroenterology Specialist in Thousand Oaks, CA. They graduated from Northwestern University Feinberg School of Medicine and is affiliated with Los Robles Regional Medical Center. Patients rated Dr. Johnson an average 3.6 star rating.

Dr. Johnson works at Practice in Thousand Oaks, CA. They are accepting new patients and accept Aetna, Anthem and Anthem Blue Cross as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. Johnson's Office Locations

  1. 1
    Gregory H Johnson MD Inc
    227 W Janss Rd Ste 215, Thousand Oaks, CA 91360 Icon Directions Right Arrow Directions Phone Icon (805) 497-9597

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Los Robles Regional Medical Center

Experience & Treatment Frequency

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What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Flexible Sigmoidoscopy
Manometry
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Manometry
ERCP (Endoscopic Retrograde Cholangiopancreatography)

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Flexible Sigmoidoscopy Chevron Icon
Manometry Chevron Icon
ERCP (Endoscopic Retrograde Cholangiopancreatography) Chevron Icon
Arterial Blood Gas Test (ABG) Chevron Icon
Electrocardiogram (EKG) Chevron Icon
Rigid Proctosigmoidoscopy Chevron Icon
Abdominal Pain Chevron Icon
Acidosis Chevron Icon
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Acute Kidney Infection Chevron Icon
Acute Upper Respiratory Infection Chevron Icon
Acute Venous Embolism Thrombosis Chevron Icon
Administrative Physical Chevron Icon
All Headaches (incl. Migraine) Chevron Icon
All Types of Food Poisoning Chevron Icon
Allergic Rhinitis Chevron Icon
Anal or Rectal Pain Chevron Icon
Anemia Chevron Icon
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Arthritis of the Elbow Chevron Icon
Asthma Chevron Icon
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Ataxia Chevron Icon
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Atherosclerosis Chevron Icon
Back Pain Chevron Icon
Barrett's Esophagus Chevron Icon
Bedsores Chevron Icon
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Benign Chronic Pain Syndrome Chevron Icon
Benign Neoplasm of the Digestive System Chevron Icon
Bladder Infection Chevron Icon
Blood in Urine (Hematuria) Chevron Icon
Bronchitis Chevron Icon
Calcium Metabolism Disorders Chevron Icon
Canker Sore Chevron Icon
Celiac Disease Chevron Icon
Cellulitis Chevron Icon
Chest Pain Chevron Icon
Chronic Neck Pain Chevron Icon
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Cirrhosis Chevron Icon
Cold Sore Chevron Icon
Confusion Chevron Icon
Constipation Chevron Icon
COPD (Chronic Obstructive Pulmonary Disease) Chevron Icon
Cough Chevron Icon
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Crohn's Disease Chevron Icon
Deep Vein Thrombosis (DVT) Chevron Icon
Dehydration Chevron Icon
Diabetes Type 1 Chevron Icon
Diabetes Type 2 Chevron Icon
Diabetes With Renal Manifestations Chevron Icon
Diabetic Polyneuropathy Chevron Icon
Diaphragmatic and Hiatal Hernia Chevron Icon
Diarrhea Chevron Icon
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Difficulty With Walking Chevron Icon
Diffuse Esophageal Spasm Chevron Icon
Dizziness Chevron Icon
Duodenal Ulcer Chevron Icon
Duodenitis Chevron Icon
Dysentery Chevron Icon
Dyslipidemia Chevron Icon
Dysphagia Chevron Icon
E. coli Food Poisoning Chevron Icon
Eczema and Contact Dermatitis Chevron Icon
Emphysema Chevron Icon
Enlarged Prostate (BPH) Chevron Icon
Enteritis Chevron Icon
Eosinophilic Esophagitis Chevron Icon
Esophageal Diverticulum Chevron Icon
Esophageal Motility Disorders Chevron Icon
Esophageal Ulcer Chevron Icon
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Essential Tremor Chevron Icon
Fever Chevron Icon
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Gait Abnormality Chevron Icon
Gallstones Chevron Icon
Gas-Bloat Syndrome Chevron Icon
Gastric Ulcer Chevron Icon
Gastritis Chevron Icon
Gastroesophageal Reflux Disease (GERD) Chevron Icon
Gastrointestinal Bleeding Chevron Icon
Gastrointestinal Malabsorption Chevron Icon
Gastrojejunal Ulcer Chevron Icon
Gastroparesis Chevron Icon
Giardiasis Chevron Icon
Gout Chevron Icon
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Heart Disease Chevron Icon
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Hemorrhoids Chevron Icon
Hepatitis A Chevron Icon
Hepatitis B - Immune Response Chevron Icon
Hepatitis C Chevron Icon
Hepatorenal Syndrome Chevron Icon
Hernia Chevron Icon
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Herpes Simplex Infection Chevron Icon
Herpes Zoster Without Complication Chevron Icon
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Human Immunodeficiency Virus (HIV) Chevron Icon
Hypercalcemia Chevron Icon
Hyperkalemia Chevron Icon
Hyperlipidemia Chevron Icon
Hypertension Chevron Icon
Hypokalemia Chevron Icon
Hypotension Chevron Icon
Hypotension (Excluding Maternal) Chevron Icon
Hypothyroidism Chevron Icon
Indigestion Chevron Icon
Inflammatory Bowel Disease Chevron Icon
Influenza (Flu) Chevron Icon
Insomnia Chevron Icon
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Intestinal Diverticulitis Chevron Icon
Intestinal Diverticulosis Chevron Icon
Intestinal Obstruction Chevron Icon
Iron Metabolism Disorders Chevron Icon
Irritable Bowel Syndrome Chevron Icon
Ischemic Colitis Chevron Icon
Itchy Skin Chevron Icon
Joint Pain Chevron Icon
Kidney Infection Chevron Icon
Leg and Foot Ulcers Chevron Icon
Limb Pain Chevron Icon
Limb Swelling Caused by Fluid Overload Chevron Icon
Lipid Disorders Chevron Icon
Liver Damage from Alcohol Chevron Icon
Loss of Taste Chevron Icon
Low Back Pain Chevron Icon
Low Blood Oxygen Level Chevron Icon
Magnesium Metabolism Disorders Chevron Icon
Malaise and Fatigue Chevron Icon
Mallory-Weiss Syndrome Chevron Icon
Malnutrition Chevron Icon
Menstrual Disorders Chevron Icon
Mineral Metabolism Disorders Chevron Icon
Nausea Chevron Icon
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Neoplasm of Gastrointestinal Tract Chevron Icon
Neurogenic Bladder Chevron Icon
Non-Alcoholic Fatty Liver Disease Chevron Icon
Non-Neonatal Jaundice Chevron Icon
Noninfectious Gastroenteritis and Colitis Chevron Icon
Obesity Chevron Icon
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Osteoarthritis Chevron Icon
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Osteoarthritis of Shoulder Chevron Icon
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Osteopenia Chevron Icon
Osteoporosis Chevron Icon
Overweight Chevron Icon
Painful Urination (Dysuria) Chevron Icon
Pancreatitis Chevron Icon
Peptic Ulcer Chevron Icon
Pericardial Disease Chevron Icon
Phlebitis and Thrombophlebitis Chevron Icon
Phosphorus Metabolism Disorders Chevron Icon
Pneumonia Chevron Icon
Polymyalgia Rheumatica (PMR) Chevron Icon
Polyneuropathy Chevron Icon
Polyuria Chevron Icon
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Pouchitis Chevron Icon
Prostatitis Chevron Icon
Proteinuria Chevron Icon
Purpura Chevron Icon
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Pyloric Stenosis Chevron Icon
Radiculopathy Chevron Icon
Raynaud's Disease Chevron Icon
Reflux Esophagitis Chevron Icon
Restless Leg Syndrome Chevron Icon
Ringworm Chevron Icon
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Secondary Diabetes Mellitus Chevron Icon
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Shortness of Breath Chevron Icon
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Sleep Apnea Chevron Icon
Sprains and Strains (incl. Muscle Tear) Chevron Icon
Stye Chevron Icon
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Ulcerative Colitis Chevron Icon
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Venous Embolism and Thrombosis Chevron Icon
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Yeast Infections Chevron Icon
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Colon Cancer Screening Chevron Icon
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy Chevron Icon
Colorectal Cancer Screening Chevron Icon
Duodenal Polypectomy Chevron Icon
Endoscopy (Esophagus, Stomach, Small Intestine) Chevron Icon
Fecal Occult Blood Test for Colorectal Cancer Chevron Icon
Gallbladder Scan Chevron Icon
Hepatitis A Screening Chevron Icon
Hepatitis B Virus Screening Chevron Icon
Hepatitis C Virus Screening Chevron Icon
Hepatitis Screening Chevron Icon
Immunization Administration Chevron Icon
Impedance Testing Chevron Icon
Instrumental Diagnostic Evaluation for Dysphagia Chevron Icon
Liver Biopsy Chevron Icon
Liver Function Test Chevron Icon
pH Probe Chevron Icon
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Screening Colonoscopy Chevron Icon
Ultrasound, Endoanal Chevron Icon
Ultrasound, Esophageal Chevron Icon
VAP Lipid Testing Chevron Icon
Wireless pH Testing Chevron Icon
Check your insurance
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    View All Accepted Carriers

    • Accepts most major Health Plans. Please contact our office for details.
    • Aetna
    • Anthem
    • Anthem Blue Cross
    • Anthem Blue Cross Blue Shield
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • Health Net
    • Medicare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    3.7
    Average provider rating
    Based on 20 ratings
    Patient Ratings (20)
    5 Star
    (12)
    4 Star
    (1)
    3 Star
    (0)
    2 Star
    (2)
    1 Star
    (5)
    Leave a review

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    Dr. Johnson's Office & Staff

    • Ease of scheduling urgent appointments
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    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Johnson

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Gregory Johnson, MD

    Specialties
    • Gastroenterology
    Specialties
    Languages Spoken
    • English, Spanish
    Languages Spoken
    NPI Number
    • 1952463762
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • Los Angeles County - U S C Medical Center
    Fellowship
    Medical Education
    • Northwestern University Feinberg School of Medicine
    Medical Education
    Undergraduate School
    • University of California, Berkeley
    Undergraduate School
    Board Certifications
    • Gastroenterology and Internal Medicine
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Gregory Johnson, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Johnson is offering online scheduling or call the provider’s office for more information.

    Dr. Johnson has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    20 patients have reviewed Dr. Johnson. The overall rating for this provider is 3.6. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Johnson.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Johnson, there are benefits to both methods. A person calling to schedule an with Dr. Johnson appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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