Marielena Olmo, Pre-Cert/ Authorization Specialist

Marielena Olmo serves as the Pre-Cert/Authorization Specialist at Advanced Wellness, where her expertise plays a crucial role in ensuring that patients receive the care they need without delay. With her in-depth knowledge of pre-certification and authorization processes, Marielena facilitates a smooth and efficient treatment process, minimizing administrative hurdles and maximizing patient access to essential healthcare services.

Marielena’s responsibilities revolve around navigating the complex landscape of insurance pre-certification and authorization requirements. She works closely with insurance providers to obtain the necessary approvals for medical procedures, treatments, and services, ensuring that patients can access the care they require in a timely manner.

Her proactive approach and attention to detail enable Marielena to anticipate potential challenges and address them proactively, thereby preventing delays or disruptions in patient care. She advocates tirelessly on behalf of patients, navigating insurance regulations and policies to secure the approvals needed to proceed with treatment plans.

In addition to her technical expertise, Marielena is also a compassionate advocate for patients, providing support and guidance throughout the pre-certification and authorization process. She understands the stress and uncertainty that can accompany navigating the insurance landscape and strives to alleviate these concerns by offering clear explanations and proactive assistance.

Gary Yen, MD


Dr. Gary L. Yen is Board certified in Physical Medicine and Rehabilitation and has a sub-specialty in Pain Medicine. Dr. Yen grew up in Long Island, NY and received his medical degree from Ross University. He completed his internship in Internal Medicine at Lutheran Medical Center in Brooklyn, NY and performed his residency in Physical Medicine and Rehabilitation at Stony Brook University, where he was chief resident.

Dr. Yen completed a pain management fellowship at RehabNY in Buffalo, NY, during which he served as the assistant athletic trainer to the Buffalo Bison, the Minor League AAA baseball team for the Cleveland Indians, as well as the Niagara University men’s and women’s collegiate hockey team.

The former chairman of the Physical Medicine & Rehabilitation Division of the Pain Management Department at CentraState Medical Center, Dr. Yen specializes in the non-operative treatment of a variety of joint, muscular, nerve, skeletal, spine and sports related injuries. He treats acute and chronic pain syndromes and performs electrodiagnostic studies. Dr. Yen also performs variety of interventional pain procedures and minimally invasive spine surgery for the relief of pain. He utilizes conservative treatments such as physical therapy, chiropractic care and acupuncture in conjunction with other procedures to enhance long term benefits. Dr. Yen believes in working with patients to create individual treatment plans.

When not attending to his patients, Dr. Yen likes to play golf, cook, and has a passion for playing the saxophone and piano. He is the proud father of two boys.