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Meet our Providers

Jordan Harper, NPNurse Practitioner in Charleston, SC

Jordan Harper is an American Academy of Nurse Practitioner’s Board Certified Family Nurse Practitioner.  She completed her undergraduate studies at Auburn University where she received a Bachelor’s of Science in Nursing. She received her Master’s of Science in Nursing as a Family Nurse Practitioner from The University of Alabama-Birmingham School of Nursing.

Jordan specializes in facial rejuvenation treatments through dermal fillers and neuromodulators. She approaches her work by enhancing the client’s beauty in a natural-looking way. Her goal is not to alter the client’s look by over-treating, but rather rejuvenate and “erase the years” to recreate a younger-looking face. She also helps with new patient consults, follow up appointments, and small dermatologic procedures.

Prior to becoming a nurse practitioner, Jordan was a critical care registered nurse for 5 years. She has served on several medical trips internationally where the focus was providing health care to undeserved nations. In her free time, Jordan enjoys traveling, being outside on the water, doing hot yoga, and hanging out with her husband and their golden doodle, Henry.

Physician Assistant in Charleston, SC

Rebecca Zerwick Johnson MPAS, PA-C

Rebecca grew up in Denver, Colorado and moved to Charleston to attend MUSC in 2004. She received her Master’s degree in Physician Assistant studies in 2006. Since graduation, Rebecca has worked five years in rural medicine which included dermatology, another five years in Emergency medicine and three years with a weight loss clinic. She joined Sweetgrass Plastic Surgery in January of 2015 to help with new patient consults, follow up appointments, laser treatments, small dermatologic procedures, injectables and the Juliet laser. Rebecca married a South Carolinian, has a sweet active two year old son and just gave birth to her second son in July 2016. Rebecca loves being outside and out on the water, leads boot camp at 5am, and has led many medical mission teams.



Nurse Anesthetist in Charleston, SC

Mike Donovan, DNAP, CRNA

Mike Donovan is a Certified Registered Nurse Anesthetist with over 14 years of experience providing safe, cost-effective, high quality anesthesia services in the Charleston and surrounding areas. Mike developed a passion for the cosmetic surgery patient population early in his career and continues to specialize in outpatient and office-based anesthesia. After working with many of the plastic surgeons around Charleston, Mike began working with Dr. Schimpf to build Sweetgrass Plastic Surgery into one of the busiest and fastest growing practices in the country. In 2016, Mike started Ketamine Infusion Specialists of Charleston and is partnering with Sweetgrass Plastic Surgery to provide intravenous infusion services for those suffering with various mental health disorders. Mike has attended the University of Georgia, The Citadel, Medical University of South Carolina, the University of South Carolina, and completed his Doctorate in Nurse Anesthesia Practice (DNAP) degree in August 2018 from Midwestern University. Mike remains an active board member with the South Carolina Association of Nurse Anesthetists (S.C.A.N.A.) and active in the American Association of Nurse Anesthetists (AANA). He currently resides on Daniel Island with his family.

Alexis Harley, NCC, LPCA

Alexis is a National Certified Counselor as well as a Licensed Professional Counselor Associate for South Carolina. She is an Ohio native and has called Charleston her home since 2008. She received her Bachelors in Psychology from the University of South Carolina and graduated Summa Cum Laude with a Masters in Clinical Mental Health Counseling from Walden University.

Alexis has a passion for helping individuals suffering from Depression, Bipolar Disorder, and Post Traumatic Stress Disorder. Her desire to help those in crises situations has led her to become knowledgeable in alternative treatments when medication and psychotherapy alone did not provide the desired outcome. Through ketamine infusions, Alexis works with the patient to engage the resurfacing of the unconscious mind, process insights, and discover ways to reframe former beliefs, experiences, and perceptions. Working towards the development of a healthy thought process, individuals are supported by her in moving forward with their lives as happier and healthier individuals.

Tim McAdams, CRNA, MSNA

Tim McAdams is a Certified Registered Nurse Anesthetist who has practiced in a number of office-based surgery centers and hospitals in the Lowcountry. He attended the University of Georgia and graduated from the Medical University of South Carolina in 2005 and has lived in Charleston ever since. Tim brings years of experience to our office and is committed to the best and safest anesthesia for all of our patients. He lives on James Island with his wife and 2 children.




James (Hal) Mahaffee, CRNA

James (Hal) Mahaffee is a Certified Registered Nurse Anesthetist with 5 years of experience providing safe, cost-effective and high-quality anesthesia services in Charleston. Hal has been practicing anesthesia to patients of all ages, neonates to geriatrics. He moved to Charleston to attend the Medical University of South Carolina Anesthesia for Nurses Program after 5 years of experience as a Registered Nurse in a high volume, high acuity Cardiovascular Intensive Care Unit. He was asked to stay and work in Charleston and has since graduated with a Master’s of Science in Nurse Anesthesia. Growing up in a small town in South Georgia, Charleston has been a city of great opportunity and advancement for his medical career. He has had the opportunity to expand from a hospital-based anesthesia practice to an office-based anesthesia practice through REM Anesthesia Services. He is excited to be a part of Sweetgrass Plastic Surgery and help patients have a safe and comfortable anesthesia experience. He resides in West Ashly with his fiance and their two dogs.