Nurse Practitioner and founder of Medical Aesthetics on Tremont

Susan Elizabeth Busch, N.P., an Adult Nurse Practitioner for more than 25 years,  has specialized in the field of Dermatology for the last 10 years at the Harvard-affiliated Lahey Hospital and Medical Center where she completed a dermatology fellowship.

She is committed to providing personalized aesthetic procedures and her areas of interest include cutting edge laser treatments including, skin and facial rejuvenation, hair removal, stretch marks, spider veins, as well as, Botox, and Dermal fillers.

Susan is a member of the Massachusetts Coalition for Nurse Practitioners, American Nurses Association, American Society for Laser Medicine and Surgery and The American Academy of Medical Aesthetic Professionals.

In addition to her medical training she received a Master’s in Public Administration from the Harvard Kennedy School. For over 20 years, Susan has been passionate about volunteering and has been a medical volunteer in Indonesia, Haiti, Ecuador and India.

Susan is a Botox and dermal filler aesthetic instructor at National Laser Institute.

She is committed to providing the highest-quality cosmetic services to her clients.

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Licensed Master Aesthetician of Medical Aesthetics on Tremont

Sarah Wallis is a licensed master esthetician and has completed 1200 hours of training at the Catherine Hinds School of Esthetics. 
Prior to her training in the esthetics world, she received an Associates's Degree in Marketing from University of South Florida.
Sarah performs all her treatments, including HydraFacials, laser hair removal, Dermaplaning, and Chemical peel with individualized attention.
She will create a custom plan to help each client achieve their skin goals.

Sarah is constantly advancing her knowledge and attended Coolsculpting University in April 2022.




Erin Walsh, BSN, RN has been a practicing nurse for over 7 years. Erin graduated in 2015 from Regis College where she is currently working on obtaining her Nurse Practitioner degree.

Erin completed her initial aesthetic certification with American Academy of Facial Esthetics in 2018. After training with some of the best injectors in the industry and gaining experience in aesthetics, she went on to establish her own successful practice in Kenmore Square. Erin specializes in dermal fillers, advanced Botox and PRP. She is also certified in laser therapy and Cool Sculpting. Erin’s love and passion for aesthetics is evident in her work.


She believes in personalized aesthetics and works with her clients to create a long-term treatment plan based on their unique goals and needs. 

Erin has many of years of experience working as an RN in the acute inpatient setting for Beth Israel Lahey Medical Center. She also earned a BA in English from UMass in 2007.  


Erin is a proud member of the ANA and Aesthetic Injectors Society.


She is also a Botox and dermal filler aesthetic instructor at National Laser Institute and is committed to providing superior service with superior results.