Our team is your team

When you start down the path to health and wellness, it’s great to know your team will be with you all the way, providing expert knowledge, timely motivation and even a little inspiration. Everyone at the Wellness Center shares a passionate belief in the power of relationships and rewarding experiences that can help you achieve your goals. We want you to get to know each of the care providers at the Wellness Center.

Lorraine Shirley-Wenzel, MD

Primary Care

Lori is an internal medicine physician with over 20 years of experience who has had a longstanding desire to help implement a new model of care delivery. Part of this effort has led her to serve on a variety of physician leadership, practice transformation, and quality committees to improve practice efficiency and health outcomes. During her time as a Medical Director, Lori led several key initiatives to improve care delivery including overseeing clinical labs, electronic health records and outpatient services. Lori enjoys teaching, consulting and speaking on a variety of topics and has been the recipient of many patient choice and leadership recognition awards during her tenure.


Lori started her career in the nursing field but transitioned after a year to pursue her dream of becoming a physician. After completing medical school in South Carolina, she moved to Birmingham, Alabama, to complete her internal medicine residency program where she served one year as Chief Resident. After completing her boards, she settled into practice in South Carolina for about ten years before moving back to San Antonio where she has worked in a variety of small group and large hospital settings. In her spare time, Lori enjoys working out, gardening, cooking, music, theater and travel. She is the proud mother of two adult children.

Yvonne Robinson Hawkins, MD

Primary Care

Yvonne is a family physician with nearly fifteen years of experience diagnosing and treating patients, while at the same time performing managerial medical work, directing medical activities and delivering educational seminars.  She has excellent communication skills, and takes pride in her ability to build and sustain trusting relationships with her patients.  Her goal is to partner with patients to help achieve optimal health and wellness.  Yvonne’s practice style is holistic, addressing the whole person – body, mind and spirit.  She integrates conventional and alternative therapies to prevent and treat disease.
In her spare time, she enjoys spending time with her husband and two children, traveling the world and seeking new adventures.  She has an extensive “bucket list” and her goal is to leave a legacy of generosity and giving.  One of her favorite quotes, “We make a living by what we get. We make a life by what we give.”- Winston Churchill

Joanie Guerra, RN

Registered Nurse

Joanie is a dedicated individual who strives to provide nothing but exceptional service to her patients. She became a nurse because enjoys learning something new everyday and nursing is always changing. She was born and raised in San Antonio. She graduated with honors from her high school, maintained a full academic scholarship and transferred to the University of Texas Health Science Center at San Antonio, where she maintained her academic success and made lifetime friends. In her 3 years as a registered nurse, Joanie has broadened her nursing skills to include, joint replacement post operative care, bariatric care and most recent rehabilitation care. Joanie enjoys rehabilitation care the most because she gets to help a patient push past their limitations and overcome exceptional odds while being a support person for her patients.


Joanie has shared her successes and hard times with fiance, Chris, a firefighter for the San Antonio Fire Department. Together they share an eccentric and very intelligent son, Jaxon. In her spare time, Joanie likes to work on small projects on her home and spend time with family. She also enjoys traveling to other cities like Portland, San Francisco and Seattle.

Katherine Phelps


Katherine is a bright individual who has the ability to brighten a room with her optimistic outlook. Katherine has developed her customer service skills and communication skills and the ability to grasp new procedures quickly through a variety of work experiences. She worked in the service industry all through college which helped contribute to her skills. During her college internship with the UTSA Rowdy New U Wellness Program, she worked closely with staff members to help them obtain weight loss and body composition goals, as well as encouraged them to attend daily workout classes. This is where she realized how much she loves preventative health and wellness programs. She also worked in the Labor and   Delivery department at Methodist Stone Oak as a Unit Clerk and was promoted to Administrative Assistant to the L&D director. Working on the L&D floor boosted her confidence and interaction with patients skills.


Katherine was born and raised in Kerrville, Texas. She attended the University of Texas at San Antonio where she received her Bachelor of Science in Public Health. After obtaining her B.S., she successfully received her CHES (Certified Health Education Specialist) from the National Commission for Health Education Credentialing. She is the second youngest of four children and has worked hard to be a good example of positivity, perseverance and hard work for her friends and family. Her hobbies and interests include anything active including tubing, running, going to parks, hiking, rock climbing, and high-intensity workout classes. She spends quite a bit of time with her three dogs, Leo, Zoya and Lilly Belle who keep her fairly busy.