Summary

Dr. Gregory Tchejeyan treats osteoarthritis, knee osteoarthritis, and arthralgia, and performs bursa aspiration and bursa injection. He has practiced orthopedic surgery for 32 years and is affiliated with Thousand Oaks Surgical Hospital, Los Robles Regional Medical Center, and Adventist Health Simi Valley.

Dr. Tchejeyan earned his medical degree from the Keck School of Medicine of the University of Southern California and completed his residency at LAC USC Medical Center. He sees patients in Thousand Oaks and Simi Valley, California, and speaks English and Spanish.

Overview based on verified provider data

Quick Facts

  • 3.3
  • 32 years of experience
  • speaks English, Spanish
  • Lac Usc Medical Center
  • 15 written reviews
  • 1 specialty
  • 16 areas of expertise
  • 3 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Gregory Hratch Tchejeyan has 4 locations

Tchejeyan Orthopaedics And Sports Medicine

250 Lombard St Ste 1Thousand Oaks, CA 91360

Adventist Health Simi Valley

2975 Sycamore DrSimi Valley, CA 93065

Thousand Oaks Surgical Hospital

401 Rolling Oaks DrThousand Oaks, CA 91361

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Dr. Gregory Hratch Tchejeyan, MDDr. Eli Ziv, MDDr. Reza Jazayeri, MDDr. Neil Bhamb, MD
Orthopedic SurgeryOrthopedic SurgeryOrthopedic SurgeryOrthopedic Surgery
Accepts New Patients Accepts New Patients Accepts New Patients
3.3 
4.8 
4.2 
5 
32 Years of Experience 18 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English, Farsi, Russian, Spanish Speaks English, Spanish, Farsi
Thousand Oaks , CASherman Oaks , CALos Angeles , CAMarina Del Rey , CA
Med School: Keck School Of Medicine Of The University Of Southern California Med School: University of California, Irvine Med School: Albert Einstein College of Medicine Med School: Washington University - St Louis School of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gregory Hratch Tchejeyan

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Gregory Hratch Tchejeyan has the following specialty

Specialty Expertise

Dr. Gregory Hratch Tchejeyan has the following 16 areas of expertise

  • Arthroscopy
  • Bone Fracture
  • Carpal Tunnel Syndrome
  • Herniated Disc
  • Hip Osteoarthritis
  • Joint Pain/Swelling
  • Joint Replacement
  • Knee Osteoarthritis
  • Knee Surgery
  • Laminectomy
  • Minimally Invasive Surgical Procedures
  • Osteoarthritis
  • Osteoarthritis (Hand and Wrist)
  • Scoliosis
  • Sports Medicine
  • Surgery

Certifications, License, & Education

32 Years Experience

Dr. Gregory Hratch Tchejeyan holds an expired medical license in the state of California.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2025.

Education & Training

Residency

Completed their residency at Lac Usc Medical Center.

Medical School

Graduated from Keck School Of Medicine Of The University Of Southern California in 1994.

NPI Number

Dr. Tchejeyan's NPI number is 1689668188.

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Frequently Asked Questions

Does Dr. Gregory Tchejeyan accept my insurance?
You can see the insurance plans that Dr. Gregory Tchejeyan accepts on their Vitals profile.
Is Dr. Gregory Tchejeyan accepting new patients?
Dr. Gregory Tchejeyan has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Gregory Tchejeyan affiliated with?
Dr. Gregory Tchejeyan is affiliated with Thousand Oaks Surgical Hospital, Los Robles Regional Medical Center, and Adventist Health Simi Valley.
Does Dr. Gregory Tchejeyan accept virtual/telehealth appointments?
Dr. Gregory Tchejeyan has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Gregory Tchejeyan's office located?
Dr. Gregory Tchejeyan's office is located at 250 Lombard St Ste 1, Thousand Oaks, CA, 91360.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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