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Dr. Efrain Mascareño believes in looking at the big picture when it comes to your eye health, so he takes the time to get to know you, your eye care history and your vision needs. Dr. Mascareño knows that getting the right prescription involves balancing several factors, including clear eyesight, visual efficiency and your ability to process visual information seamlessly. Whether you need a routine eye examination, an eyeglasses fitting or treatment for eye disease (such as glaucoma or macular degeneration) or eye surgery (such as LASIK or cataract surgery), we will provide you with the best care, advice, and eyewear options.


  • University of California at Berkeley

Professional Memberships

  • American Optometric Association
  • San Diego County Optometric Association
  • California Optometric Association


  • treatment of eye diseases

Awards & Publications

  • Contracosta County Community Work Award

Office Hours

Mon9:00am - 6:00pm
Tue9:00am - 6:00pm
Wed9:00am - 6:00pm
Thu9:00am - 6:00pm
Fri9:00am - 6:00pm
Sat9:00am - 3:00pm


Contact lens fitting$61.00
Comprehensive Eye Examination$142.00

Patient Reviews

Overall Rating

Dr. Mascareno has been our Optometrist for many years and now sees my children. He is patient, kind and honest. His office staff is very friendly, I especially think Gaby is great!!

Overall Rating

The best customer service. Dr. Mascareno took his time during the exam and explained the whole process. I highly recommend Eastlake Vision.

* Reviews have been sourced and collected through a mix of verified Doctible patients and other publicly available directories.