About Dr. Nourian


About Dr. Alen A. Nourian

Alen A. Nourian, MD received his bachelor’s degree with honors in pre-med, economics and education from the University of California, Los Angeles (UCLA). He graduated from UCLA in the top one percent of his class. From there, Dr. Nourian attended medical school at the University of Southern California, Keck School of Medicine. He graduated with honors and was awarded Alpha Omega Alpha, a top honor society medical school award given only to the top 10% of graduates.

Following medical school, Dr. Nourian moved to New York City where he completed his orthopedic surgery internship and residency training at the Downstate Medical Center. During residency, Dr. Nourian was the chief resident of the orthopedic department. He then returned to Southern California to pursue a one-year fellowship in spine surgery at the San Diego Center of Spinal Disorder in San Diego. There, he specialized in the management of spinal disorders in adults and children.

Dr. Nourian has lectured both nationally and internationally about his research on spinal disorders and treatments for both anterior and lateral spinal fusion. He has been published in multiple journals and has written several book chapters. Upon completion of his fellowship training, he joined the doctors of Ventura Orthopedics in the Simi Valley location until 2020, and currently oversees his own orthopedic spine surgery and general orthopedics practice, with offices in Moorpark, Thousand Oaks, North Hollywood, West Covina, and Rancho Cucamonga.

Dr. Nourian enjoys playing basketball, football, cycling, traveling, paddle boarding and family activities.


University of California, LA

Undergraduate Degree

Los Angeles, CA
September 2000-June 2005

Bachelor of Arts in Economics

  • Overall GPA: 3.94
  • Summa Cum Laude
  • College Honors
  • Golden Key National Honor Society President

University of Southern California

Keck School of Medicine – Medical Degree

Los Angeles, CA
July 2005-May 2009

Medical Doctor

  • Senior AOA
  • Step 1 score: 243

Downstate Medical Center

Orthopedic Surgery – Residency & Internship

Brooklyn, NY
July 2009-June 2014

Chief Resident

  • Member of the graduate Medical Education Council

San Diego Center of Spinal Disorder

Spine Surgery – Fellowship

San Diego, CA
August 2014-July 2015

Orthopedic Spine Fellowship Surgeon

Work Experience

Ventura Orthopedics

Simi Valley, CA

Orthopedic Spine Attending
September 2015-2020

US HealthWorks/Concentra

Oxnard, CA

Orthopedic Spine Attending
January 2018-present

Simi Valley Hospital

Simi Valley, CA

Director of Orthopedic Spine

Cedars-Sinai Marina Del Rey Hospital

Marina Del Rey, CA

Spine Surgeon

Languages Spoken






Nourian, AA and Eastlack, R.
“Effect of Anatomic Variable and Level of Approach on Perioperative Vascular Complications with Anterior Lumbar Interbody Fusion”. Spine 2016, Jan
Nourian, AA and Akbarnia, BA.
“Do Longer Surgical Procedures Result in Greater Contamination of Surgeons’ Hands?”. Clin Orthop Relat Res 2016, Jul
Alen Nourian and Aristo Vojdani.
“Heat Shock Protein and Gliadin Peptide Promote Development of Peptidase Antibodies in Children with Autism and Patients with Autoimmune Disease.” Clinical and Diagnostic Laboratory Immunology, May 2004, p. 515-524, Vol. 11, No. 3
Alen Nourian and Aristo Vojdani.
“Immune Response to Dietary Proteins, Gliadin and Cerebellar Peptides in Children with Autism”. Nutritional Neuroscience

Research Experience

SUNY Downstate Department of Orthopedics

Brooklyn, NY

Researcher Assistant – January 2012-May 2014

I am currently investigating the anatomy of the Lumbar Plexus and Psoas Muscle using MRI on scoliotic curves with respect to the surgical approach for lateral transpsoas interbody fusion

SUNY Downstate Department of Orthopedics

Brooklyn, NY

Researcher Assistant – March 2011 – May 2012

Abstract: Rasquinha V., Nourian A., Maheshwari A.,; Are ‘Smart Phone’ cameras safe for intraoperative photography in Orthopedic Surgery?

Department of Neurosurgery at USC

Los Angeles, CA

Researcher Assistant – January 2006-April 2007

Poster Presented: Orning J., Nourian A., Zhou B., Zee C., Oh B., Giannotta S., (2007, April). A Lower Admission Glasgow Coma Scale (GCS) Score Corresponds to an Increased Likelihood of Marshall Classification Progression. Poster presented at: American Association of Neurological Surgeons Annual Meeting; Washington, DC

Immunoscience Laboratory

Los Angeles, CA

Researcher Assistant – January 2003-May 2005

  • Conducting research on Systemic Lupus Erythematosus and Autism through advanced immunology and microbiology lab techniques involving expansive test samples to determine genetic and environmental links to the disease.
  • Directed by Dr. Aristo Vojdani.
  • Publication: Alen Nourian and Aristo Vojdani. “Heat Shock Protein and Gliadin Peptide Promote Development of Peptidase Antibodies in Children with Autism and Patients with Autoimmune Disease.” Clinical and Diagnostic Laboratory Immunology, May 2004, p. 515-524, Vol. 11, No. 3
  • Publication: Alen Nourian and Aristo Vojdani. “Immune Response to Dietary Proteins, Gliadin and Cerebellar Peptides in Children with Autism”. Nutritional Neuroscience,


Google Reviews


RateMDs Reviews


Healthgrades Reviews

Dr. Alen Nourian takes his Spine Practice Solo

Volunteer & Leadership Experience

Federation Tutoring Program

Los Angeles, CA

Director – September 2000-May 2005

  • Community based non-profit weekly tutoring program for disadvantaged foreign students. Tutor in subjects of math, English, writing, reading comprehension and various specialized subjects, as needed, for students in grades 1-12. Tutoring is conducted every Saturday from 12-3 PM.
  • Recognized tutoring program through UCLA Department of Education and UCLA Medical School.
  • Currently over 65 tutees and 25 tutors

UCLA Education Department

Westwood, CA

Undergraduate Teaching Assistant – January 2001-June 2003

  • Helped remove student’s academic limitations and enhance their abilities by creating tailored instruction.
  • Selected by Education Department faculty to assist a group of 45 students to help with higher learning skills.
  • Trained and instructed students on how to be an effective tutor, by discussing issues about education and leadership, encourage self-empowerment, to act as positive role models, optimal learning, and elevating self-esteem among the tutees.

Golden Key International Honour Society

Westwood, CA

President and Social Chair Executive Board Member – January 2001-June 2003

  • In addition to recognizing and encouraging scholastic achievement, Golden Key also utilizes a student organization to implement service projects and to reach out to the student body.
  • In my Executive Board position, I would set up different social activities to help have members to get to know their UCLA Executive Board Members.
  • My duties as President are to organize, plan and work to ensure the continuation and overall success of the UCLA chapter. I also call meetings of the officers and manage the planning and implementation of the induction ceremony and reception.
  • Headed by Associate Dean of students, Dean Joan Nelson.

American Medical Student Association (AMSA)

Los Angeles, CA

President – September 2006-September 2007

The American Medical Student Association is the oldest and largest independent association of physicians-in-training in the United States. With more than 68,000 members, including medical and premedical students, residents, and practicing physicians, AMSA is committed to improving medical training and to advancing the profession of medicine.

Surgical Student Interest Group

Los Angeles, CA

Co-Leader – September 2006-September 2007

  • SSIG (Surgical Student Interest Group) is a student-run organization designed to provide activities and greater exposure for medical students interested in surgery as a future career.
  • We provided students with lectures, shadowing opportunities, surgical workshops, mentoring and research opportunities.
Medical Scholars Program
Los Angeles, CA

Academic Tutor – August 2006-April 2007

This program selected second year medical students who excelled in certain subjects to provide academic help to first year medical students. As a second year medical student I was chosen to tutor first year medical students in the areas of epidemiology and gross anatomy.

Professional Affiliations

Dr. Nourian is affiliated with American Academy of Orthopedic Surgeons, American Board of Orthopedic Surgery, California Medical Association, North American Spine Society, Ventura County Medical Association.

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What Patients Think About Dr. Nourian

Awesome awesome doctor!!!very nice to all his patient! Dr. Nourian is very kind and caring. A very pleasant man and easy to communicate with. He saw my son when he injured his hip and He took extra good care of him. After 2 wks he was able to resume sports. He’s not only a very good orthopedic surgeon but also an amazing Spine doctor. He always make sure he always gets the job done. 2 Thumbs up to this Doctor!!!??

Regz Ramos


Dr. Nourian was fantastic! He was able to alleviate my back pain. I would recommend him to anyone

Nikesh Patel


Dr. Nourian is the best. His bedside manner is friendly and professional and his staff is excellent. I went to see him after a terrible whiplash injury when I rear-ended while driving. After receiving my MRI results, the doctor was quick to reach out and went over my options with me. He really cares about his patients.

Michelle Sadighpour Shophet


Dr. Nourian is an outstanding physician. I injured my back while exercising recently. I went to see him, and he explained my injury to me in detail. He told me that my injury would most likely heal without surgery, but if I needed surgery in the future he would get me through it. He is honest, intelligent, and forthcoming. I am thankful for him as my spine physician.

Michael Broukhim


Dr. Nourian was absolutely fantastic. I was struggling with intense lower back pain. He took his time 40 minutes to be exact to see me and review everything with me after another follow up we decided to do surgery. Thank god!!! I’m back to working out, picking up my child, and living my best life. I was so hesitant to do surgery but he was a true god send. He would call me weekly to see how I’m doing.

Sara Sadig


Dr. Nourian is smart, caring, attentive and super knowledgeable. I highly recommend him as an orthopedic surgeon!

Sharon Darouvar Greiner


Great with patients and consciences of patient’s time as well as needs. He will spend time to assure the patients with respect to treatment plan and follow-up was amazing with my auntie’s back issues.

Connie Esparza


An extremely knowledgeable doctor with wonderful bedside manner. He clearly explained every step of the procedure and eased all my worries. My back is feeling great thanks to Doctor Nourian

Ashley Sadig


After seeing three doctors and all of them saying I should operate Dr Nourian was able to address and issue without and surgery. I got an epidural and did physical therapy and I’m able to run around with my grand child. He’s truly a gem. Everyone at the office was friendly and supportive.

Katrin Sadighpour


Dr. Nurian explained everything very well and preformed the surgery exactly as planned. I woke up pain free and the surgery pain was gone in five days. Could not give him enough praise.

Wade Savage