Podiatry Staff

Meet Dr. Witt


Meet Dr. Lloyd

Meet Dr. Sgro




Christina comes to Advanced Foot and Ankle with 15 years’ experience in partnership accounting of commercial real estate assets. She began her career with a Property Management company that owned and managed 51 senior living care communities in Washington, Oregon, California, New Mexico, Texas, North Carolina, & Florida, under two different management entities. She was instrumental in evaluating operations and financial accounting policy and procedures of the newly acquired assets and merging these operations under new corporate management.

Later, she joined a Development Group, that developed assisted living communities. She was hired to be a part of the construction and development team to provide financial accounting and to implement operational processes for each facility. More recently, she began her own business and provided accounting and property management services to small commercial office real estate investors. She managed up to 11 commercial office buildings and was responsible for leasing, facility management, and financial reporting.

During her career, she has provided leadership in management, assisted corporate entities establish accounting policies and procedures, assisted owners in streamlining business operations, developed and implemented budget models specific to their businesses, trained and mentored accounting staff, and has held treasury responsibilities.

Throughout her career, she has demonstrated a consistent record of favorably impacting operational profit through development and implementation of efficient operational systems, accounting policies and procedures that result in timely financial reporting to aid in proactive asset and property management, on site evaluation of assets to identify opportunities and rectify potential issues, and tailoring and negotiating creative leasing structures for the benefit of tenants and landlords.

Upon joining Advanced Foot & Ankle Center in 2012, she has been instrumental in implementing and streamlining operational processes in an everchanging medical field. She graduated from the University of North Texas with a Bachelor of Science in Accounting and aminor in Economics and a Bachelor of Business Administration in Finance with heavy concentration in Investments. She received her Certified Public Accounting designation in 2000.






Colleen has been with the practice since 1999. She is an integral part of the practice as the coder/biller. Colleen is an avid runner. She is a triathlete and is a four-time Boston Marathon finisher. Colleen is married with three children and lives in McKinney.



Irma was born and raised in Texas and recently moved to the Dallas area.  She has been in the medical field for 18 years.  She likes to travel, spend time with her family and attend various sports events with her grandchildren.  






Kevin has lived in Collin County for over 25 years.  He graduated from PCI Health Training Center with a 4.0 GPA!. In his free time he is either at his house relaxing or out somewhere fishing with his friends.    He is currently the Medical Assistant for Dr. Silvers. 




Kristi is both California and Texas raised. She has an avid interest in the medical field. She spends the majority of her time laughing, learning, and loving with her family and friends. Kristi enjoys innovative art, all sports, and music.






Shauna was born and raised in Texas.  She has been in the medical field for 25 years.  She cherishes the time spent with her family, friends and grandkids.




Skigh was born in California and raised in Alabama before settling down in Texas. When she is not working, she is dedicated to her studies in obtaining a Bachelor of Science in Nursing at Texas Women’s University. In her free she enjoys spending time with her dog, scrolling Reddit, and watching YouTube videos. She is currently the medical assistant for Dr. Witt. 


DaMya was born and raised in Toledo, OH.  She recently moved to Texas in January 2021.  DaMya graduated from Ross Medical College in 2015 and has been working in Podiatry since graduation.  In her spare time she enjoys being a photographer, spending time with family and watching Grey's Anatomy.  DaMya is currently the Medical Assistant for Dr. Lloyd.


Audrey was born in Minnesota where she grew up playing hockey for 10 years before moving to Dallas. Audrey is currently a student at The University of Texas at Austin hoping to pursue a career as a physician assistant.  When she is not working, Audrey enjoys spending time with her family, friends, and two miniature schnauzers.


McKinney Office

Prosper Office

Office Hours
Monday: 8:00 AM - 6:30 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 9:00 AM - 6:30 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 7:30 AM - 4:00 PM