About Us

About Our Practice


McKenzie Family Medicine & MedSpa is a patient focused practice that is founded on integrity and compassion. We are determined to bring a level of excellence to the delivery of services to each of our patients to achieve great outcomes. Our standards of care are deeply rooted through the Christian values we uphold. We build professional Doctor-patient relationships that help promote a trusting environment.


Heather McKenzie, M.D.

Dr. Heather McKenzie is a board certified Family Medicine physician actively practicing family medicine since 2006 treating all ages and conditions. She has always enjoyed the breadth that family medicine has to offer. Dr. McKenzie took a special interest in skincare, furthering her education with multiple courses in laser treatments, dermal fillers (Juvederm) and botulism toxin (Botox) under several instructors including plastic surgeons. As Dr. McKenzie continues to grow in all walks of medicine it fuels her passion to help her patients using her creative abilities while also providing medical grade skincare. Her main goal is to provide affordable aesthetic care to help clients feel confident as we all gracefully age. In addition to injectable treatments, Dr. McKenzie is also certified by Candela Lasers to perform all laser treatments. Originally from Joshua, Dr. McKenzie was happy to return home to raise her two boys, Blake and Hunter, with her husband, Bryan.


  • Undergraduate Education: Texas A&M University : 1999
  • Medical Education: University of Texas Health Science Center: San Antonio, TX : 2003
  • Residency: Christus Santa Rosa Family Medicine Residency Program : 2003 – 2006
  • Board Certifications: American Board of Family Medicine : 2006 – Current
  • Affiliations: Texas Medical Association, American Academy of Family Practice


Crissy Welch, DNP, APRN, FNP-BC

Dr. Crissy Welch is a seasoned board certified Family Nurse Practitioner specializing in family medicine since 2008. She completed her Doctor of Nursing Practice degree at Texas Christian University and holds BSN and MSN degrees from The University of Texas at Arlington.


Crissy enjoys taking care of all clients from birth through end-of-life. She is particularly passionate about her medically supervised weight loss program and loves helping clients look and feel their best both inside and out. Experienced in Botox, dermal fillers (Juvederm), Kybella, microneedling (SkinPen) and Candela laser treatments, Crissy effectively combines scientific knowledge and artistic creativity to deliver stellar medical grade skin care services for her clients. Born and raised in Johnson County, Crissy is a hometown girl who is originally from Rio Vista and currently resides in Burleson with her husband Brad and son Tyler. She enjoys traveling, fishing, gardening and soaking up the sunshine.


  • Undergraduate Education: University of Texas at Arlington (2003)
  • Graduate Education: University of Texas at Arlington (2007)
  • Post-Masters Doctoral Education: Texas Christian University (2015)
  • Board Certifications: Texas Board of Nursing (2000-current); American Nurses Credentialing Center (2008-current)
  • Affiliations: American Academy of Nurse Practitioners, Texas Nurse Practitioners


Ryann Gille

Ryann Gille is a board certified Family Nurse Practitioner specializing in family medicine with an additional background in women’s health nursing. She graduated from Frontier Nursing University’s Family Nurse Practitioner program in 2018 and holds a Masters of Science in Nursing (MSN) as well as an Associate Degree in Nursing (ADN) from Tarrant County College.


Ryann loves caring for patients of all ages, but is particularly passionate about women and children’s health, weight management, and promoting health and wellness. She incorporates scientific knowledge with evidence-based practice to help clients feel their best by assisting them in setting and achieving healthy lifestyle goals. Ryann is also certified in Nexplanon and IUD insertion/removal, BioTe hormone therapy, and is furthering her knowledge in the variety of skincare treatment options we have available. Originally from Godley, Ryann currently resides in Burleson with her husband and three children. Some of her hobbies include hiking, camping, fishing, cooking, and reading.


  • Undergraduate Education: Tarrant County College (2009)
  • Graduate Education: Frontier Nursing University (2018)
  • Board Certifications: Texas Board of Nursing (2010-current); American Association of Nurse Practitioners (2018-current)
  • Affiliations: American Association of Nurse Practitioners, Texas Nurse Practitioners


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