Summary

Dr. Gregory Johnson is a board-certified internal medicine physician who specializes in gastroenterology. He earned his medical degree from Northwestern University Feinberg School of Medicine and completed his residency at LAC USC Medical Center. With over five decades of medical practice, Dr. Johnson brings extensive expertise to digestive health care. He is fluent in both English and Spanish.

Dr. Johnson practices at Los Robles Regional Medical Center and maintains offices in Westlake Village and Thousand Oaks, California. His clinical focus includes treating conditions such as hemorrhoids and pancreatic cancer. He performs specialized procedures including hemorrhoid infrared photocoagulation, anoscopy, and sigmoidoscopy to diagnose and treat digestive disorders. Patients have given him an average rating of 3.7 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.7
  • 54 years of experience
  • 4 insurance plans accepted
  • speaks English, Spanish
  • Lac Usc Medical Center
  • 6 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Flexible scheduling

Office Locations

Dr. Gregory Harold Johnson has 2 locations

Specialty Surgical Center Of Westlake Village

696 Hampshire Rd Ste 100Westlake Village, CA 91361
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Johnson Gregory Office

227 W Janss Rd Ste 215Thousand Oaks, CA 91360
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

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Dr. Gregory Harold Johnson, MDDr. Orlanda Ferreira, MDDr. Adama Diarra, DODr. Alaa Hajal, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.7 
54 Years of Experience 16 Years of Experience 14 Years of Experience 15 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks Spanish, English Speaks English, French, Bambara
Westlake Village , CAVentura , CATigard , ORDiamond Bar , CA
Med School: Northwestern University Feinberg School Of Medicine Med School: Pontificia Universidad Catlica Madre y Maestra Med School: Arizona College of Osteopathic Medicine Med School: University Of Damascus Faculty Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gregory Harold Johnson

  • Accepts Medicaid
  • Anthem Blue Cross
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare

Medical Specialties

Dr. Gregory Harold Johnson has the following 2 specialties

Specialty Expertise

Dr. Gregory Harold Johnson has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastroenterology
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

54 Years Experience

Education & Training

Residency

Completed their residency at Lac Usc Medical Center.

Medical School

Graduated from Northwestern University Feinberg School Of Medicine in 1972.

NPI Number

Dr. Johnson's NPI number is 1952463762.

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Frequently Asked Questions

Where is Dr. Gregory Johnson's office located?
Dr. Gregory Johnson's office is located at 696 Hampshire Rd Ste 100, Westlake Village, CA, 91361.
Which hospitals is Dr. Gregory Johnson affiliated with?
Dr. Gregory Johnson is affiliated with Los Robles Regional Medical Center.
Does Dr. Gregory Johnson accept virtual/telehealth appointments?
Dr. Gregory Johnson has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Gregory Johnson speak?
Dr. Gregory Johnson speaks English and Spanish.
Is Dr. Gregory Johnson accepting new patients?
Dr. Gregory Johnson is accepting new patients on Vitals. View Dr. Gregory Johnson's profile on Vitals to make an appointment.

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