Welcome to The Retina Partners

The physicians of The Retina Partners are eye surgeons specializing in the treatment of retinal disorders. Our physicians are Board Certified in ophthalmology and have completed an additional two years of sub-specialized fellowship training in retinal diseases and surgery. If you have been referred to us, your doctor has detected a retinal condition and has asked us to participate in your specialized care.

As a part of your health care team, we will work closely with all of your doctors to treat your condition. Our office is equipped with state of the art equipment to help us treat your retinal needs.

We partner with our colleagues and patients in order to provide the highest quality of retina care in a patient-focused and respectful environment.

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Our Research

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Case of the Month

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What to Expect on Your First Visit

We strive to make every visit as pleasant, smooth, and efficient as possible. Prior to your appointment, you will receive a telephone call from one of our friendly staff to confirm the date and time of your appointment.

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Clinical Trials & Research

The Retina Partners are committed to advancing treatment for a variety of retinal conditions. Our physicians take pride in being involved in teaching and research as it relates to the betterment of vision. As such, The Retina Partners are involved in multiple clinical trials to help with retinal conditions in the future.

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Diagnostic Tests

At The Retina Partners, we offer the latest in diagnostic technology to evaluate conditions of the retina, macula and vitreous. Specific tests will be used based on the condition being evaluated to pinpoint the cause of vision change and to customize treatments for best possible result.

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Meet Our Doctors

The doctors and staff at The Retina Partners are united in our commitment to a single principle: treating every patient as we would treat our own family member. Driven by this philosophy, we make it our top priority to provide personalized and honest care using the latest and most advanced technology in an environment of warmth, compassion, and respect. We encourage our patients to ask questions because it is the right of every patient to learn about the nature of their disease and the latest that science has to offer in understandable terms. Only in this way can the patient, the doctor, and the staff work together as a team to achieve the best results.

Doctor  Hanscom

Thomas Hanscom, MD

Doctor Robert E. Engstrom

Robert E. Engstrom, Jr., MD

Doctor Hajir Dadgostar

Hajir Dadgostar, MD, PhD

Doctor Amir H. Guerami

Amir H. Guerami, MD

Dr. Christian Sanfilippo

Christian Sanfilippo, MD

Dr. Christian Sanfilippo

Stavros Moysidis, MD

Convenient Locations

Call our friendly staff to schedule your appointment. We will make every effort to accommodate your schedule with a date and time that is prompt and most convenient for you.




Beverly Hills

  • 2080 Century Park East
  • Suite 707
  • Beverly Hills, CA 90067
  • (310) 746-4861


Santa Monica

  • 2021 Santa Monica Blvd.
  • Suite 720E
  • Santa Monica, CA 90404
  • (310) 829-3303


Thousand Oaks

  • 100 East Thousand Oaks Blvd.
  • Suite 112
  • Thousand Oaks, CA 91360
  • (805) 409-0909