Medical Aesthetics Associates (MAA)

We are a proud member of Medical Aesthetics Associates (MAA), the most elite, compliant group of nurse
injectors in Massachusetts, and our supervising physician is a board-certified, Harvard trained plastic surgeon.

Meet Our Team


Kristen Callanan, BSN, RN, CANS, CLT, LE, AIM Clinical Instructor

Kristen is the Owner and an Advanced Aesthetic Nurse Injector at RENEW Medical Aesthetics. She has also been a practicing Licensed Esthetician certified in Medical Esthetics since 2000. Kristen opened RENEW in June of 2013, with a focus on complementing Cosmetic Injectables, including Botox and various dermal fillers, with the art of excellence in skincare.

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Shani Geno, CLT, LE

Shani is skilled in various skincare treatments; including DiamondGlow by Allergan, Ultrasonic Facial Treatments, Environ DF2 Skin Treatments, Chemical Peels, VI Peel, acne management, anti-aging and laser skin treatments. Shani specializes in the Emerge non-ablative fractional laser and the Cutera Xeo; which includes Intense Pulsed Light (IPL), Laser Genesis and Titan skin tightening into her practices for facial skin rejuvenation. She also provides laser hair removal, full waxing and brow shaping services.

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Allison Braverman, LE, Reiki Practitioner II


Allison graduated from Catherine Hinds Institute of Esthetics in 2005. She currently holds a Type 6 esthetic license and has her Holistic Practitioners Certification, which includes Reiki I and II. Allison specializes in advanced facial treatments, eyebrow shaping, and Brazilian waxing. She also customizes at-home skincare regimens using medical-grade skincare products tailored to her clients needs. Staying up to date with industry trends and trainings, Allison truly enjoys educating each client while giving them a relaxing, results-driven treatment.

Jodi Hahn, Practice Manager

Jodi brings her effective leadership, business management, health and wellness and exceptional customer relations experience to RENEW. Educated at Villanova University, she is certified in Lean Manufacturing and Six Sigma Business Process Improvement with a focus in Healthcare. Her studies included business analytics, business planning, organizational assessments, performance planning and project management. Her 18+ years in various corporate roles centered on creating successful teams and redesigning business workflows are a valuable addition to our team. Jodi oversees all aspects of the Practice and ensures our clients are receiving the highest level of care. She keeps RENEW running efficiently while continuously meeting the needs and demands of the ever-evolving Medical Aesthetics industry.

For Business, Event, Marketing, Product or Wholesaler related assistance please email Jodi@RenewMedAesthetics.com

Nannette O'Brien, Client Service Coordinator

Nannette is a graduate of Northeastern University with a concentration in Business Management. She has worked in the Medical Spa industry for over 10 years. She provides top-notch customer service and ensures that each client is matched with the appropriate provider based on their skin needs and conditions, facilitating ultimate client satisfaction.