Meet Our Preceptors & Residents

Andrea Payne, PharmD, BCPS
Preceptor: Cardiology
Education: Campbell University, Buies Creek, NC
Joined CHRISTUS: 2010
“I enjoy precepting pharmacy students and residents, helping them to grow into well-rounded pharmacists. I look forward to developing residents’ expertise in cardiology."


Brian Frescas, PharmD
Preceptor: Management
Education: Harding University, Searcy, AR
Joined CHRISTUS: 2018

“It has been with great pride and enjoyment to witness the growth of our clinical pharmacy program during my time here at Shoreline. I look forward to seeing what continued strides we will make in the coming years as we push to modernize pharmacy across the system.”

Ester Winsjansen, PharmD
Preceptor: Staffing

Education: University of Oklahoma, Oklahoma City, OK
Joined CHRISTUS: 2015

“We have a great team of pharmacists who enjoy teaching and interacting with our residents. I love watching our residents gain confidence as they grow and develop their clinical skills over the course of the year.”


Hannah Hodges, Phar

Preceptor: Medication Safety
Education: Texas A&M Irma Lerma Rangel College of Pharmacy, Kingsville, TX
Joined CHRISTUS: 2018

“Being a part of the CHRISTUS Spohn system has allowed me to grow in my profession and be a part of a close-knit family environment. It is rewarding to see my efforts in medication safety make a difference not only in my facility but throughout the Spohn system.”


Jason Mazour, PharmD, BCOP

Preceptor: Oncology
Education: University of Nebraska Medical Center, Omaha, NE
Joined CHRISTUS: 1995

“In my tenure here at CHRISTUS Spohn, there has been tremendous growth in the pharmacy department. It is rewarding to see the impact on patient care and the improvements in quality of care that Pharmacy has achieved.”

Joe Valadez, PharmD, BCPS

Preceptor: Cardiology
Education: Texas Tech University Health Sciences Center, Amarillo, TX
Joined CHRISTUS: 2008

“It has been a great joy to watch our profession advance the way that it has over the years here at CHRISTUS Spohn. The pharmacy residents are in a unique position to not only witness this progression but to also experience firsthand the importance of a pharmacist's involvement in the care of our patients. If we continue down the path that we're on as leaders I have no doubt that pharmacists will continue to play a vital role in positively impacting the quality of care provided at our facilities.”

Joseph Campbell, PharmD, BCPS

Preceptor: Management
Education: Kansas University, Lawrence, KS
Residency: Stormont Vail, Topeka KS (PGY1, PGY2 Emergency Medicine)
Joined CHRISTUS: 2020

“Being a part of the CHRISTUS Spohn Shoreline pharmacy team has given me an opportunity to work with an amazing group of clinicians and support staff to provide the best possible patient care. I am proud to be part of a program that continues to develop and innovate.”

Karlye Trevino, PharmD, BCPS

Preceptor: Internal Medicine
Education: University of Michigan, Ann Arbor, MI
Residency: LSU Health Sciences Center, Shreveport, LA (PGY1)
Joined CHRISTUS: 2011, 2020

“Here at CHRISTUS Spohn Shoreline we have a great pharmacy department and leadership which afford us the opportunities to expand our clinical services and improve patient care for our diverse patient population. Precepting, being a resource for the family medical residents, and working in a multi-disciplinary environment has been truly rewarding and allows for me to continually grow as a clinician.”

Kevin Welch, PharmD, MBA, BCPS

Preceptor: Management
Education: Creighton University, Omaha, NE
Residency: CHRISTUS Trinity Mother Frances (PGY1)
Joined CHRISTUS: 2014 (Residency), 2020 (Clinical Pharmacy Manager)

“Being the RPD at CHRISTUS Spohn is the most fulfilling part of my job. I love empowering residents to reach their highest potential and I am always amazed how far they progress in one short year!”

Laura Sample, PharmD, BCPS

Preceptor: Emergency Medicine, Trauma
Education: University of Connecticut, Mansfield, CT
Residency: CHRISTUS Spohn (PGY1)
Joined CHRISTUS: 2014
“At CHRISTUS Spohn Shoreline, we are part of an extraordinary team of healthcare providers.  Pharmacists are considered an integral part of the multidisciplinary team and work side by side with the emergency medicine attending and residents. It is so rewarding to be respected in a team that provides optimal care.”

Rachel Persall, PharmD

Preceptor: Critical Care
Education: Texas A&M Irma Lerma Rangel College of Pharmacy, Kingsville, TX
Residency: CHRISTUS Spohn (PGY1)
Joined CHRISTUS: 2011

“The patient population and the multidisciplinary approach to patient care mean there is always something new to learn at Shoreline!”

Sara Dejong, PharmD, BCPS, BCCCP

Preceptor: Critical Care, Trauma
Education: University of Louisiana at Monroe, Monroe, LA
Residency: Our Lady of the Lake, Baton Rouge, LA (PGY1)
Joined CHRISTUS: 2015

“Shoreline provides many opportunities for professional growth. Residents are exposed to a wide variety of disease states due to our diverse and fascinating patient population, and build confidence in their clinical skills through collaboration with our specialty care teams. And the view from the hospital at sunrise is spectacular!”