Our History

Green Wave Medical was founded by Dr. Winslow Engel in 2015 when he saw the overwhelming need for alternative solutions to chronic pain and other debilitating medical conditions in our leeward community. Originally making house calls, Dr. Engel quickly grew his vision into a small practice in Waianae.

In 2019, Dr. Engel retired from Green Wave Medical and turned the business over to Liz Holgate, a friend and business colleague, who, in turn, hired providers to continue care for Dr. Engel’s patients.

Although a lot has changed, our energy and passion for our patients remains the same! We believe that, in many cases, the benefits of medical marijuana outweigh the risks when it is used legally and responsibly. It is our mission to make cannabis available as medication to all qualified patients in need.

Kalif C. Peter MSN, AG-ACNP-BC

Kalif is a board certified Adult Gerontology Acute Care Nurse Practitioner who specializes in medical cannabis assessments, focusing on helping patients explore alternative treatments for chronic illnesses. Kalif is dedicated to guiding individuals through their wellness journeys, emphasizing education and personalized support. While he does not prescribe cannabis, Kalif is committed to empowering patients with knowledge and resources to make informed decisions about their health. Outside of his practice, Kalif enjoys spending time with his wife and two young boys, supporting his children with their tennis and reflecting his belief in a balanced, healthy lifestyle.

Liz Holgate, MBA

Liz Holgate is the owner/operator of Green Wave Medical and works periodically as a business consultant. She lived in Waianae for 7 years and worked with the Waianae Coast Comprehensive Health Center to develop and implement the Integrated Pain Management program. In addition to managing Green Wave Medical, Liz also runs a charter school in Austin, TX where she currently resides.

A long time sufferer of chronic pain due to autoimmune diseases, Liz is passionate about helping people with complicated medical conditions find alternative treatments that carry fewer and less severe side effects than traditional prescription medications. She manages all administrative functions for the office and loves working with patients!