Learn more about the team at M.D. Laser Studio.

Alissandro "Andy" Castillo, MD, MBA

Medical Director

Dr. Andy Castillo is the owner and Medical Director of M.D. Laser Studio. He is a family physician with extensive dermatological and surgical training. His education includes a BS degree in Zoology from the University of Maryland, an MD degree from Wake Forest University, and an MBA from Duke University Fuqua School of Business. Dr. Castillo completed an internship in general surgery at Walter Reed Army Medical Center. While serving in the United States Army as a flight surgeon he also successfully completed a plastic and reconstructive surgery research fellowship at prestigious Johns Hopkins. Following his military service, he finished a three-year residency in family medicine and established a successful private practice in Mooresville, NC. Dr. Castillo opened M.D. Laser Studio in 2001 as an adjunct to his family practice, but he quickly grew the business and helped it evolve to a singular entity.

A Fellow of the American Society for Laser Medicine and Surgery, Dr. Castillo has participated in the Constitution & Bylaws Committee, Audit Committee, and Strategic Planning Committee. With his extensive expertise on such a wide variety of equipment, he is often called upon to train others in laser procedures. He has served as a Luminary for Laserscope/Iridex, has trained and spoken on behalf of Medicis, the provider of Restylane, Perlane, and Dysport, and is a Platinum Plus-Level Provider of Botox and the Juvederm family of products for Allergan.

Dr. Castillo and his wife, Dr. Rebecca Appleton, operate M.D. Hair Restorations through M.D. Laser Studio and are both Members of the International Society For Hair Restoration Surgery. They recently opened Encore Nurses, a concierge Botox service currently available in Charlotte and around Lake Norman. For more information about Encore Nurses, visit

What's Dr. Andy's favorite product?

Andy thinks protecting your skin with Obagi Sunshield is a must.


Rebecca Appleton Castillo, MD, MS

Co-Founder & Co-Medical Director

Dr. Appleton is the wife of Dr. Castillo, is a board-certified physician and a Fellow of the American Society for Laser Medicine and Surgery. She is a graduate of Duke University, having earned a BS in Zoology. Dr. Appleton also holds a Master’s Degree in exercise physiology/cardiac rehabilitation at the University of Maryland. She managed the corporate fitness center at the National Security Agency in Fort Meade, Maryland, while completing her degree at the University of Maryland Medical School. Dr. Appleton then completed a three-year residency in family medicine in Charleston, South Carolina. Afterward, Dr. Appleton and Dr. Castillo established their family practice, Carolina Family Medicine & Wellness, then opened M.D. Laser Studio in 2001, and M.D. Healthcare in 2013. She and her entire family are all actively involved in their community.

What's Dr. Becky's favorite product?

Becky says, "the Capillus Cap has helped my hair grow thicker -- it's amazing technology!"


Heather Penley, RN

Laser Nurse Specialist

A true North Carolina girl, Heather was born and raised in Salisbury. She got her B.A degree in Communications/Public Relations from University of North Carolina in Wilmington. Heather worked at M.D. Laser Studio early on as a Treatment Coordinator, and went on to earn her nursing degree. After working for over eight years as a Registered Nurse, Heather has come back! We're glad to have Heather and her cheerful, positive attitude at the Laser Studio, not to mention her skill and experience!

What's Heather's favorite procedure?

"CoolSculpting has helped my clothes fit better!"


Caitlin Bostick, RN, BSN

Laser Nurse Specialist

In the early years of M.D. Laser Studio, Caitlin began working as a Treatment Coordinator while she was in high school, continuing to work part-time while attending college. Caitlin earned her Bachelor of Science in Nursing from Clemson University in 2007. She began her nursing career at Novant Health in the Cardiovascular Institute at Presbyterian Hospital in Charlotte, NC. In 2015, Caitlin returned to M.D. Laser Studio to train with Dr. Castillo as a Laser Nurse Specialist. She is also a Member of the American Society for Laser Medicine and Surgery.

Caitlin is a native of Charleston, South Carolina, but now calls Uptown Charlotte her home. In her free time she enjoys traveling and spending time with family. In addition to nursing, Caitlin also participates in testing M.D. Laser Studio products and services.

Sarah Stein

Office Manager

Sarah was born and raised in Connecticut, but has lived all along the East Coast, including in South America! Not surprisingly, Sarah speaks fluent Spanish. She was among the first to graduate Lake Norman High School, and went on to earn a degree from UNC in Charlotte. Sarah has been with M.D. Laser Studio in various capacities since August 2005. Always a smiling face, Sarah is our Office Manager and a key member of the team at M.D. Laser Studio. She's at the heart of the Laser Studio, keeping everything running smoothly and efficiently. Sarah is always busy, but still finds time to test products and procedures and offer invaluable input to staff and patients alike!

What's Sarah's favorite procedure?

Sarah's favorite treatment is Laser Hair Reduction. "I love not having to worry about shaving!"

What's Sarah's favorite product?

Sarah says, "Lumiere is the best eye cream I've ever used."


Alarie Stone

Alarie Stone

Medical Assistant & Treatment Coordinator

Alarie has worked in the medical field for over 15 years, many of those faithfully with Dr. Castillo and Dr. Appleton. A native southerner, Alarie graduated from Mitchell Community College with a degree in Medical Assisting. She and her husband Cris are raising their two sons, Peyton and William, in the Lake Norman area. Alarie enjoys singing, spending time with family and friends, traveling, and spending time outdoors. Like the rest of the staff, she is actively participating in product testing and training at the Laser Studio. Alarie is quite busy these days earning her RN degree -- and we can't wait to have her expand her responsibilities at M.D. Laser Studio!

What's Alarie's favorite product?

Alarie loves how Latisse makes her natural lashes look luxurious!


Jen Heller

Treatment Coordinator

Jen joined the M.D. Laser Studio staff in 2015 as a Treatment Coordinator and soon became an invaluable member of the staff. When she isn't raising our spirits, Jen is busy raising two sons in the Lake Norman area. Like all of the staff at M.D. Laser Studio, Jen is testing products and contributing to the establishment of procedure protocol. We feel very fortunate to have found in Jen another great fit with our M.D. Laser Studio team!

Sherry Aley, LPN

Treatment Coordinator and Licensed Practical Nurse

Sherry is one of our newest team members! Born and raised in North Carolina, Sherry and her husband spent 9 years in Phoenix, Arizona before deciding to return to NC to raise their two sons. Sherry enjoys gardening and boating and is loving the lake life! She is actively testing and training on procedures at M. D. Laser Studio, including one of our newest procedures: ThermiVa. We suspect she may become our resident expert! We're very happy to have Sherry onboard.

Vicki Schiefen, R.N.

Vicki Schiefen, RN

Laser Nurse Specialist & PR Liaison

Before moving to North Carolina in 1999, Vicki earned her nursing degree from Corning in New York and then contributed to clinical research trials at Sayer Clinic in Guthrie, Pennsylvania for several years. Vicki and her husband have four grown children who also live in the Lake Norman area, making the Schiefen name fairly well-known! Vicki has nearly 30 years of nursing experience and has been with M.D. Laser Studio since the very start. In addition to being a founding member of the MDLS staff, Vicki continues to participate in all levels of skin rejuvenation research and on-going training with Dr. Castillo. Look for Vicki out and about as she shares her knowledge of M.D. Laser Studio throughout the community in her added capacity as our Public Relations Liaison.

Rita Aldridge

Rita Aldridge

Marketing Director

Rita has been with M.D. Laser Studio almost since the beginning, helping to establish the image of the business to reflect its unique location along with the personalities of Dr. Castillo and his staff. She handles all the media, writes and designs the ad campaigns, and hosts events at the Laser Studio. Rita graduated from Southern Illinois University in Carbondale with a degree in Commercial Graphic Design, and has worked in advertising and marketing ever since. Through her involvement in WeWrite, Rita is also a published author and editor. Born on the West Coast and raised in the Midwest, she settled in the East Coast over 20 years ago, where she raised two beautiful daughters. You can reach Rita by email at

John Mairs

John Mairs

IT Specialist & Web Administrator

John joined M.D. Laser Studio in 2006 providing technial support on location. Very soon he was helping manage our website, eventually taking over hosting and web administration in addition to managing all computer hardware and software. At a very early age, John discovered his passion for technlogy and has been on a path to a career in that industry ever since. John was one of the early participants in the Collaborative College for Technology and Leadership, a five-year early college high school program. He began working with MDLS as a freshman, and the following year started teaching video production classes to gifted students at Iredell-Statesville Schools summer camps. Within a few years, he was offering computer services through JMTech and added Passport Health to his list of employers. Several years after that, John became the Technology Director at American Renaissance School. He continues to work with us while juggling his other responsibilities and attending Western Governor's University.

What's John's favorite procedure?

John's favorite procedure is Botox. "It helps me look more approachable!"

What's John's favorite product?

John's favorite product is Obagi Exfoderm. "It keeps my skin wonderfully fresh!"