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David Osteen

Fantastic Sleep | Owner & President

David Osteen was born in Texas and grew up in the Houston Area.  He is an Eagle Scout, a University of Houston Graduate with a Bachelor of Science degree in Interdisciplinary Studies with a double minor, and has been in ministry for 20 years.

That is what brought David and his wonderful family to San Antonio back in 2016. He founded Fantastic Sleep with a desire to change people's lives by offering the best services and service in the sleep medicine industry. He is proud of the team he has assembled and hopes that you experience the same joy and thankfulness from their care and work as he does.


Dr. David Michalak

Fantastic Sleep | Medical Director

Dr. Michalak is a native of the Houston area and lives in The Woodlands with his wife and two daughters. When he’s not helping patients, he enjoys carpentry and woodworking - especially building antique-style furniture.

In addition to family practice, Dr. Michalak is board certified in sleep medicine and is dedicated to providing the highest quality of patient care. He personally evaluates every sleep test that Fantastic Sleep performs and ensures each patient receives an accurate diagnosis and effective treatment plan.


Fantastic Sleep | Director of Operations

Alyssa Dow

Alyssa Dow is a graduate of Texas A&M University and brings extensive experience in customer service and office administration.  She makes sure that we all stay on track and that all the t's are crossed and i's are dotted so our patients receive the best quality efficient experience.  She really knows how to get the job done and is trustworthy and dependable beyond words. We are thankful to have her on our team and know that her knowledge, skills, ability and character will help take us to the next level.


Iris Perkins

Fantastic Sleep | Delivery Tech Manager

Iris is bilingual and has been delivering to our patients since 2018 and has helped hundreds of patients by providing outstanding customer service and allowing patients to be cared for with the convenience of never having to leave their homes. She is professional, courteous, respectful, and compassionate and has helped Fantastic Sleep to grow while maintaining our high standards of excellent and personable customer service.


Sarai Robledo

Fantastic Sleep | Delivery Tech

Saria is bilingual and has been delivering to our patients since 2020. She is an emoji and gif queen! and has an upbeat happy disposition that is contagious. She brings a joy to our team and a joy to her job and the patients love her.  She provides great customer service with a joyful smile and makes sure all her patients receive compassionate care.


Shanell Rojas

Fantastic Sleep | Customer Care Coordinator

Shanell is bilingual and focuses on "front office" patient care and coordination. She is presently going to college pursuing a degree in the medical field.  Shanell has a delightful and fun personality who truly cares about people and loves helping them. She is a dedicated team member with a heart full of sympathy and concern.  We know you'll love working with someone who truly cares about you and has your best interest at heart.


Jessica Hollie

Fantastic Sleep | Customer Care Specialist - East Texas

Jessica is fun, bright, easygoing, and caring. She is currently working on her Public Health degree and lives in East Texas with her fiancee and one-year-old daughter. Jessica has six years of experience in several different medical specialties and is currently focused on primary care and sleep medicine. As you can tell from her personality she is great with patient care and is a joy to work with. We know you will love her like we do.

Melanie Grace

Fantastic Sleep | Administrative Assistant

Melanie just joined the Fantastic Team in 2022 and is helping with back end office work that helps keep everyone progressing through to testing and treatment. She is bright, kind, tenderhearted, and loves her new job, and she also loves dogs, cats, and kayaking and one day aspires to be the Governor of Colorado! We are thrilled to have her on our team as she is an integral part of our continued growth.