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Dr. Joseph Mendelis, MD

Orthopedic Spine Surgery
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Accepting new patients
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Dr. Joseph Mendelis, MD is an Orthopedic Spine Surgery Specialist in Thousand Oaks, CA. They graduated from Jefferson Medical College Of Thomas Jefferson University and is affiliated with Adventist Health Simi Valley, Los Robles Regional Medical Center and Valley Presbyterian Hospital.

Dr. Mendelis works at Southern California Orthopedic Institute in Thousand Oaks, CA with other offices in Northridge, CA and Simi Valley, CA. They are accepting new patients and accepts Aetna, Blue Cross Blue Shield and Blue Cross Blue Shield of California 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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User Ratings (of at least 4.0)
Insurance Accepted
Headshot Available
Accepting New Patients
Conditions Treated and Procedures Performed


  1. 1
    Southern California Orthopedic Institute
    375 Rolling Oaks Dr Ste 210, Thousand Oaks, CA 91361 Icon Directions Right Arrow Directions Phone Icon (805) 497-7015
  2. 2
    Southern California Orthopedic Institute
    19950 Rinaldi St # 100, Northridge, CA 91326 Icon Directions Right Arrow Directions Phone Icon (818) 363-2273
  3. 3
    Southern California Orthopedic Institute
    3605 Alamo St Ste 200, Simi Valley, CA 93063 Icon Directions Right Arrow Directions Phone Icon (805) 578-8550

Hospital Affiliations
Admitting Hospitals

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

  • Adventist Health Simi Valley
  • Los Robles Regional Medical Center
  • Valley Presbyterian Hospital

Experience & Treatment Frequency


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
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.
Cervical Spine Myelopathy
Degenerative Disc Disease
Herniated Disc

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.
Cervical Spine Myelopathy Chevron Icon
Degenerative Disc Disease Chevron Icon
Herniated Disc Chevron Icon
Intervertebral Disc Disease Chevron Icon
Myelopathy Chevron Icon
Osteoarthritis of Spine Chevron Icon
Spine Deformities Chevron Icon
Spine Fracture Treatment Chevron Icon
Spondylolisthesis Chevron Icon
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    View All Accepted Carriers

    • Aetna
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • Cigna
    • First Health (Coventry Health Care)
    • MultiPlan

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
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    How was your appointment with Dr. Mendelis?

    May 17, 2022
    Dr. Mendelis came recommended to me from the urgent care facility and 2 other health care professionals that I know and trust. His staff is very friendly and helpful too! He took the time to really review my medical history before meeting with him so he was knowledgeable and then continued to explain and breakdown the test results and formulate a plan of action together. I was a bit nervous that a surgeon would want you to have surgery vs trying non surgical methods first, but that wasn't the case at all! He really listened and understood my concerns and helped to create a treatment plan that is very manageable and made me feel comfortable. Highly recommend him as a doctor or even a second opinion to your current provider.
    Megan — May 17, 2022
    Photo: Dr. Joseph Mendelis, MD
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    Dr. Mendelis' Office & Staff

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    Experience with Dr. Mendelis

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

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    About Dr. Joseph Mendelis, MD

    • Orthopedic Spine Surgery
    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1467847525
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • Jefferson Medical College Of Thomas Jefferson University
    Medical Education
    Undergraduate School
    • California State University Northridge
    Undergraduate School

    Frequently Asked Questions

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

    Dr. Mendelis has an average wait time of Under 10 minutes at their office(s).

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

    Dr. Mendelis has not been reviewed and rated on Healthline FindCare, yet. If you have seen this provider you can leave your own review based on your experience with Dr. Mendelis.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Mendelis, there are benefits to both methods. A person calling to schedule an with Dr. Mendelis 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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