Office Hours:
Monday: 8:00am - 5:00 pm
Tuesdays: 8:00am - 6:00pm
Wednesday: 8:00am - 6:00pm CLOSED FOR LUNCH 12:00-1:00pm 
Thursday: 8:00am - 6:00pm
Friday: 8:00am - 5:00pm
Saturday: 8:00am - 12:00pm

Sunday: Closed

We do occasionally close for lunch. Please call beforehand if you

plan on coming in from 12:00-1:00pm.

Dr. Stephanie Mastores

Years of experience: 8


Dr. Mastores is a 2009 graduate of The Ohio State University College of Optometry. She attended the University of Arizona before obtaining her Bachelor of Science degree from Ohio State. She completed two externships in Arizona at the Whiteriver Indian Health Hospital and at the Southern Arizona VA Hospital in Tucson.

Dr. Mastores is an active member of Volunteers for Optometric Service to Humanity (VOSH) which provides eye exams to the underprivileged around the world. She has participated in VOSH trips to Ecuador, Mexico, Grenada, and Cameroon. 

Dr. Mastores is a member of the Arizona Optometric Association (AzOA), the American Optometric Association (AOA), and the American Academy of Optometry (AAO).

Dr. James Frank
Years of experience: 35 

Dr. Frank is a graduate of The University of Houston College of Optometry and has been in Arizona since 1982. He partnered with Dr. Kantor in 1991, and they merged in 2003.


Dr. Frank performs general eye examinations for children, teens, adults, and seniors. He is certified in CRT (using special contact lenses to re-shape the cornea-outer surface of the eye). CRT allows those candidates to sleep in their lenses overnight, remove them in the morning, and be glasses and contacts free for the remainder of the day. Then the "retainer lens" is put back on in the evening at bedtime, and the process starts over again.


If you have any interest in this non-surgical refractive procedure, make an appointment to see Dr. Frank for an eye examination and CRT consultation. Dr. Frank is a member of the Arizona and American Optometric Associations.

Our friendly staff will assist you throughout your visit. We provide comprehensive eye care while offering you the latest trend in eyeglass frames, contact lenses, and surgical referrals for your vision correction. We welcome walk-in prescriptions and adjustments.


At Central Phoenix Eyecare we aim to employ only qualified individuals to provide you with the best possible care. We are one of the few practices that have 4 Opticans fully licensed and certified. CPE also has several licensed technicians to ensure that all of the tests before the Dr. sees you is accurate and finished in a timely manner.

Dr. Benjamin Usleman

Years of experience: 10


Dr. Ben Usleman is originally from Columbus, Indiana, he moved to Arizona in 2007. After several years of practicing in the East valley, he has recently relocated to Phoenix and joined our team. He earned his Doctor of Optometry and bachelor's in Optometric Science from Indiana University in Bloomington. He completed internships at Quantico Naval base in Virginia and Polytechnic University in Hong Kong.

Dr. Usleman's main focus is general eye care for prescribing spectacles and contact lenses, but he is additionally certified for the treatment and management of ocular disorders and holds an optometric license with therapeutic privileges. Outside of the practice, he lectures and consults on cataract surgery intra-ocular lens pre-operative calculations and post operative analysis.

Dr. Jennifer Koster

Years of experience: 10


​Dr. Jennifer Koster grew up in Kansas and earned her Bachelor of Arts degree in Microbiology at the University of Kansas. She then obtained her Doctor of Optometry degree in 2005 from the Illinois College of Optometry in Chicago. Dr. Koster completed clinical externships in pediatric vision therapy in Wichita, Kansas, ocular disease at Chicago's Illinois Eye Institute, low vision at the Chicago Lighthouse for the Blind and family practice optometry at The Eye Center of North Florida in Panama City.

Dr. Koster worked in the optical field for several years prior to attending optometry school. She values that experience for the knowledge of how prescribing and fitting appropriate eyewear can improve the quality of a person's life. She performs general eye exams for patients of all ages, fits contact lenses, and treats and manages ocular disease.

Dr. Koster enjoys spending time with her husband, an ophthalmologist, her young son and daughter, and their Havanese puppy. She also enjoys reading, traveling, hiking, yoga, volunteering with her church, and trying new local restaurants.


Our Staff

About Us

We are dedicated to providing you and your family with the best in eye health care.​ Come in and experience a cutting edge exam for yourself. We offer a wide variety of specialized tests. Central Phoenix Eyecare also specializes in dry eye care and prevention. We have 4 Doctors on staff with a total of 63 years of experience. Feel free to click on the video to see what you can expect during a typical visit.

The Doctors