MILE HIGH EYE INSTITUTE - Key Persons


Ashley Esser

Job Titles:
  • Doctor of Optometry

Audrey Hudson

Job Titles:
  • Doctor of Optometry

Lisa Reyes

Job Titles:
  • Doctor of Optometry

Madeline Graber

Job Titles:
  • Doctor of Optometry

Marshall J. Huang

Marshall Huang, MD is a fellowship-trained cataract and glaucoma surgeon. He graduated magna cum laude from Cornell University with a Bachelor of Science, in both Nutritional and Biological Sciences with a concentration in Neurobiology and Behavior. He then completed his Doctor of Medicine at the University of Pittsburgh School of Medicine, followed by his Ophthalmology residency at the top-ranked John A. Moran Eye Center in Salt Lake City, Utah. He finished his training with a specialization in glaucoma and complex anterior segment surgery at the prestigious Lindstrom Fellowship with Minnesota Eye Consultants. There he trained under internationally recognized glaucoma and corneal specialists to obtain expertise in all forms of minimally invasive glaucoma surgeries (including iStent, Hydrus, OMNI, KDB, GATT, Micropulse, Diode CPC), as well as premium and complex cataract surgeries. Dr. Huang has extensive research experience, working in the labs at the University of Utah Moran Eye Center Bernstein Lab, UPMC Center for Image Guided Neurosurgery, The Weill Institute for Cell and Molecular Biology, and Cornell University Department of Chemistry and Chemical Biology. Through his research, he has received several honors and awards, including grants from the University of Pittsburgh, as a part of the Physician Scientist Training Program and as a Walter L. Copeland Medical Student Scholar. Dr. Huang has been active in his community, serving in the Fourth Street Clinic in Salt Lake City and the Guerrilla Eye Service in Pittsburgh, both free ophthalmology clinics for local underserved patients. He also recently returned from a medical mission trip to Honduras where he trained local surgeons to perform cataract and glaucoma surgeries. In his spare time, Dr. Huang enjoys backcountry and alpine skiing, backpacking, mountain biking, volleyball, and going to concerts.

William Richheimer

Job Titles:
  • Cataract & Refractive Surgeon and Cornea Specialist in Goodland Regional Medical Center, Goodland, KS and Broomfield, Vail, Edwards and Greater Denver Metro Area, Sheridan, CO
William Richheimer, MD, is a skilled ophthalmologist and the founder of Mile High Eye Institute, which has locations in Englewood, Broomfield, and Edwards, Colorado, as well as Goodland, Kansas. Dr. Richheimer fell in love with Colorado during his residency at Denver's St. Joseph's hospital. After leaving to complete his training at world-renowned eye centers, Dr. Richheimer returned to Colorado. In 2008, he realized his dream of creating his own leading-edge vision care practice, Mile High Eye Institute. As a leader in ophthalmology, Dr. Richheimer was the first fellow in the United States to be fully certified in the Staar Implantable Contact Lens, the first U.S. surgeon to perform ultra-thin DSEK, and one of only a few local surgeons who performs corneal cross-linking. Dr. Richheimer stays at the forefront of cataract surgery, providing the most advanced techniques and all options for lens implant technology. Dr. Richheimer enjoys giving back to the community through teaching and volunteering. On numerous occasions, he has provided surgical care in underserved countries. In his spare time, he relishes adventures with his family, as well as working towards his goal of becoming an iron-distance triathlete.

Zachary Vest

Job Titles:
  • Glaucoma Specialist & Surgeon, Cataract Surgeon in Goodland Regional Medical Center, Goodland, KS and Broomfield, Vail, Edwards and Greater Denver Metro Area, Sheridan, CO
  • Specialist
Zachary Vest, MD, is a fellowship-trained glaucoma specialist who joined Mile High Eye Institute - which has locations in Englewood, Broomfield, and Edwards, Colorado, as well as Goodland, Kansas - in 2014. Dr. Vest specializes in the medical and surgical management of glaucoma as well as advanced cataract surgery techniques. Originally from St. Louis, Missouri, Dr. Vest earned a degree in biomedical engineering at Texas A&M University before attending the University of Texas Southwestern Medical School in Dallas for his medical school, ophthalmology residency, and glaucoma fellowship. Dr. Vest has participated in research concerning the efficacy and safety of new surgical technologies in glaucoma. Outside of the office, Dr. Vest and his wife spend much of their free time enjoying the outdoors by hiking, fly fishing, and camping. Dr. Vest was named a 5280 Top Doctor in 2021. Dr. Vest is currently accepting new patients and looks forward to welcoming them to Mile High Eye Institute and providing them with spectacular care. Mile High Eye Institute, located in Sheridan, Colorado, is a specialty Ophthalmology practice serving the Denver metro community including Castle Rock, Broomfield, Aurora, Littleton as well as our satellites in Goodland, KS and Edwards, CO. Board-certified ophthalmologists William Richheimer, MD, Zachary Vest, MD and Leonid Zukin, MD perform a wide and unique range of eye-care services. We also look forward to Marshall J. Huang, MD joining our practice this fall. Investment in state-of-the-art technology is key at Mile High Eye Institute, which offers a variety of laser-assisted procedures, such as laser in-situ keratomileusis (LASIKĀ®) and photo refractive keratectomy (PRK) for individuals with nearsightedness, farsightedness, and astigmatism. These minimally invasive techniques can dramatically reduce or even eliminate the need for glasses and contact lenses. Along with laser surgery, the practice performs the latest procedures to enhance eye health. Dr. Vest is a leading glaucoma specialist who treats even the most advanced closed-angle glaucoma cases. Meanwhile, Dr. Richheimer, a top corneal specialist, performs all types of corrective procedures, including cornea transplants and corneal cross linking (CXL). Our Optometrists (Audrey Hudson, Madeline Graber, Lisa Reyes and Ashley Esser) located in the Greater Denver Metro Area provide an elevated care experience with detailed consultation prior to surgery. With the wide knowledge and passion for optimal eye and vision function our team takes each individual needs to create a personalized surgical plan. Mile High Eye Institute is dedicated to the importance of continued medical and surgical care. We encourage our patients to maintain routine visits with their local optometrist.