Lab Supervisors

Tristan Charran received his Bachelor of Science in Biomedical Informatics from New York City College of Technology. He has always had a passion for the clinical lab sciences and found that his passions were realized and furthered at MAZE. Tristan’s positive experiences while working as a member of our Extended Sperm Search team has steered him to pursue post-graduate education in reproductive health with a focus on assisted reproductive technologies. He is currently working on his master’s degree in Reproductive Clinical Sciences at Eastern Virginia Medical School.  

As lab supervisor, Tristan oversees the daily operations of both the Manhattan and Purchase offices. This includes all specimen processing and analysis. He manages the lab team and coordinates with the other departments at the practice, to ensure the lab runs efficiently with MAZE as a whole.

David Narvaez is the Lab Supervisor at the Maze Lab’s NYC location. He has been working for with us for over 5 years. He manages daily operations of the lab, quality control as well as quality assurance. He is also responsible for training new staff making sure that all lab SOPs are followed. David holds a Bachelor’s degree in Biology from SUNY Albany. He transitioned from the orthopedics field to the andrology world which he’s now passionate about.

Senior Andrologist

Chaya Rothschild (Project Manager of Extended Sperm Search & Microfreeze) holds a certification in both Andrology and Embryology Laboratory Sciences through the American Association of Bioanalysts Board of Registry.

Her prior experience includes work at a fertility laboratory performing IVF and other procedures related to Assisted Reproduction. Her time there has shown her that male infertility is a factor that is largely underestimated as contributing to the success or failure of assisted reproductive treatment. Her skills and experience in the micromanipulation of reproductive cells make her a valuable asset to the new Extended Sperm Search Program at Maze Men’s Health.

Chaya has almost 10 years of experience with direct patient care, beginning with her time spent as a volunteer EMT in her hometown. She has found that the ART laboratory scientist is a unique blend of laboratory technician and clinician, with patient-centered care being fundamental to her approach.

Senior Lab Technician

Annmarie Loper

Lab Technicians

Rakiba Tasnim
Isabelle Marino
Olga Wilson
Eddy Lopez

Medical Assistants

Ben Israel
Shenise Randall
Lana Modad


Dr. Werner


Michael A. Werner, M.D., FACS is a board-certified urologist who received his specialized fellowship training in male infertility and surgery and male sexual dysfunction at Boston University Medical Center. He lectures and writes extensively on these topics in medical journals and books.

Dr. Werner completed his Urology residency at Mount Sinai Medical Center in Manhattan and received his medical school training at the University of California at San Francisco. He holds an undergraduate degree in Biology from Harvard College. Dr. Werner’s private practice is limited to male infertility and male sexual dysfunction.

Dr. Werner believes that you need to have a complete understanding of the medical options available to you. Together, you will decide on the course of treatment that makes the most medical and personal sense for you.