Cynthia Villacis

Physician Assistant – Certified

Cynthia Villacis, a licensed, board-certified physician assistant, supports Dr. Tjelmeland in various clinical and surgical settings, including new consultations, pre- and post-operative care. Cynthia also maintains staff privileges at Seton Hospital, Brackenridge Hospital, St. David’s Hospital, South Austin Hospital, and Heart Hospital of Austin, which enables her to assess patients at the time of consultation, provide inpatient care, and perform hospital rounds.

Cynthia is also trained to perform in-office procedures such as ProFractional Laser Therapy, Botox injections, Fillers, and vein sclerotherapy.

Born in South Carolina, Cynthia moved several times throughout her childhood as her father served in the military. Always fond of the state of Texas, she returned in 1998 to attend college at Baylor University in Waco, where she received a Bachelor’s of Science in Biology with a concentration in Pre-Health Care in 2002, followed by a Master’s in Physician Assistant Studies from The University of Texas Medical Branch in Galveston in 2005. During elective clinical rotations, Cynthia discovered she could combine her aesthetics and medicine interests in the specialty of plastic and reconstructive surgery.

Cynthia is a member of the Association of Plastic Surgery Physician Assistants, American Academy of Physician Assistants, and the Central Texas PA Society. Prior to working with Dr. Tjelmeland’s practice, she provided patient care in Endocrinology and as a certified physician assistant.

Stefanie Peacock


Stefanie is Dr. Tjelmeland’s Esthetician at Meridian Skin Care Clinic. She is pleased to offer a vast array of knowledge on skin care, anti-aging, products, lasers, chemical peels, and more to her clients. She also lends support to both the administrative team and the surgical staff as needed. Stefanie has a warm and outgoing demeanor. That, along with her knowledge, skill, and sincere interest in helping others, makes patients and staff feel at ease on a daily basis.

Born and raised in New Orleans, Stefanie attended Louisiana State University. After18 years in the airline industry, she had a strong desire to pursue a career in aesthetics. She received her certification in 2002 and relocated to Austin in 2005. She joined the Meridian team in 2010 and eagerly continues to expand her knowledge on skin care, products, and laser treatments.

Sarah Ameliya Morales

Scheduling Coordinator

Ameliya is the scheduling coordinator for Meridian Surgery Center. She interacts with doctors’ offices daily to coordinate surgeries and acts as the patient contact, answering general patient questions and performing EKGs as needed.

Born and raised in South Texas, Ameliya relocated to Austin to pursue a degree in Audiology at the University of Texas. Upon graduating in 2005, she worked in audiology for a short period but had always been interested in plastic surgery. Ameliya joined the Meridian Surgery Center team in the summer of 2006 and is extremely pleased to extend our high level of care to every patient.

Sonia Escobedo

Executive Assistant

Sonia acts as executive assistant to Shylene, our surgery center director, and Dr. Tjelmeland. She is in charge of credentialing for all physicians who operate at the facility and infection control, anesthesia log times, and any task that helps to ensure a seamlessly run facility.
Sonia has an extensive administrative background of over 11 years, and her work ethic is strongly rooted in problem-solving and promoting efficacy with critical thinking and thorough examination. With 10 years of experience in the insurance field, Sonia acted as an enrollment trainer, where she honed her organizational and leadership skills, actively educating employees and maintaining a department database for over 300 clients. More recently, she worked in Human Resources, where she consistently maintained positive work relationships in various settings and situations. Sonia’s diverse and solid skill set made her an ideal candidate to join the Meridian team in the spring of 2016. She is consistently striving to achieve and improve, and she demands the highest level of proficiency from herself and her work.

Patti Wilhite

Certified Public Accountant

Patti maintains financial records for several entities, including Meridian Surgery Center and Dr. Tjelmeland’s practice. Besides running payroll for all employees, she prepares and audits financial statements, pays all bills, and monitors all banking activity for the entities.
Patti graduated from The University of Texas with a Bachelor’s degree in Accounting and soon after became a CPA. With many years of public accounting and account management under her belt, she joined the Meridian team in 2005. Patti’s past experience and wisdom give her the capabilities to handle any situation that may arise. This combined with her upbeat personality and can-do attitude, makes Patti an asset to the Meridian team and a delight to work with.


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