Clinical Staff

Innovations Medical Facial Fat Transfer

Fat transfer allows us to tighten up areas of the face that have sagged due to the natural aging process. Using advanced fat transfer with PRP, Innovations Medical has achieved results with greater longevity than previously available procedures.

Our staff, headed by Dr. Bill Johnson, is extensively trained in all aspects of cosmetic procedures and patient care. In addition to offering excellence in our treatments and procedures, we educate our patients about all of their options and discuss all potential treatment outcomes and side effects. This ensures that our patients have realistic goals and a thorough understanding of their treatment progress at all times. Finally, we continue to participate in clinical trials for new procedures, and work with equipment manufacturers and other suppliers with the goal of improving the treatment options available to the public.


Viva Phengsengkham

Thermage Technician, Cosmetic Surgery Consultant

Rhonda Greenzweig, CMA

Surgery Assistant

Rhonda was born in Lubbock, Texas although Arlington has been her home for the past 17 years. She graduated from Permian High School in Odessa. She then attended Dallas Baptist University and then graduated from Arlington Medical Institute. Rhonda has been at Innovations Medical for 8 years under Dr. Johnson. In 2004, Rhonda was hired to assist Dr. Johnson with medical patients. Then in 2006 she began assisting Dr. Johnson with SmartLipo, and she now assists with Vibro-assisted Liposuction and Tummy tucks. Rhonda is married with three girls who keep her extremely busy outside of work.

Lisa Williams, RN

Cosmetic Nurse Injector / Stem Cell Tech

Lisa was born in Houston and grew up in a small Southeast Texas town. After high school, she moved to Austin where she earned her nursing degree and spent the next nine years. She moved to Dallas in September 2014 to be closer to family who she spends lots of her free time with. Her passions for health, fitness, and aesthetics have drawn her to Innovations Medical.

Adalys Delgado

Surgical Assistant


Rhonda Johnson, PhD

Chief Financial Officer

Rhonda was born in Lubbock, Texas. She earned her undergraduate and graduate degrees from Texas Tech University and Nova Southeastern University. In the early 1990’s, she had a private counseling practice and was a behavioral medicine instructor for the Family Practice department at Texas Tech University School of Medicine. In the late 1990’s she created and managed psychiatric homecare programs in Texas. In 1998, Rhonda returned to Texas Tech and received a Master of Business Administration degree. Upon completion of her degree, Rhonda and her husband moved to the Dallas-Fort Worth area. Since moving to this area, Rhonda has provided business and financial consulting to both medical and aesthetic practices. She also created and managed a business consulting division for MedSurge Advances, Inc. In 2007, Rhonda joined her husband in opening the Dallas Innovations MedSpa office. Rhonda is the proud mother of her two children and several grandchildren.

Sout Mesa

Patient Coordinator

Meredith R. Skembo

Chief Operating Officer, Cosmetic Surgery Consultant

Meredith was born in Lubbock, Texas where she graduated from Coronado High School. Immediately after graduation, she moved to Arlington to attend the University of Texas at Arlington. Meredith earned her degree in Management and Information Systems. She has been the office manager for Dr. Johnson since 2002, and was there at the beginning of Innovations MedSpa. Meredith has twin boys. They are the loves of her life and when she isn’t at work she is with the twins.

Alan Vojtech

Chief Marketing Officer, Cosmetic Surgery & Stem Cell Therapy Consultant

Alan was born in Lubbock, Texas and spent his summers in the Czech Republic. In 2004 he graduated from Southern Methodist University with an International Studies Business degree with a German minor. Following graduation, he relocated to San Francisco to open a Marketing/Promotions firm.  His enthusiasm for marketing and his desire to succeed led Dr. Johnson to invite Alan to join the Prevention First and Innovations Medical team as the Director of Marketing in 2006. In October of 2007, Alan took on his current title of Chief Marketing Officer.  In addition to his current position at Innovations Medical, Alan is the Owner of Vojtech Arms, Delon Medical Group, CellCZ, and Apparentia Global, SRO.  Alan has been featured in Les Nouvelles Esthetiques Magazine for his article on the Vi Peel and has been recognized in the Dallas Business Journal’s “Dallas Top 100″.

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Dr. Bill Johnson MD, MMM Innovations Medical
Contact us with any questions or call our Dallas office at 214-643-8665.