About Us

The staff at Renew Laser & Aesthetic Medicine provide a variety of skincare services to our clients in a medically supervised, boutique environment. Our goal is to make every client feel healthy, happy, and confident through the development of an individualized treatment plan that identifies and addresses each client’s specific concerns and goals. Over 25 years of medical expertise have enabled us to select the highest quality medical aesthetic devices in the industry to provide safe, effective treatments that give each client their desired result.

Karl Zimmerman M.D.


Dr. Zimmerman graduated from medical school in 1993. He completed his residency in Internal Medicine at Temple University Hospital in 1996. He is an excellent diagnostician who has served the Kennett Square area for over 20 years. He has been consistently ranked as Top Doc in Main Line Today and Philadelphia Magazine.

Dr. Zimmerman prides himself for being thorough, compassionate, and taking a well-rounded approach to patient care. He has completed advanced training in Botox and filler injections. He is excited to partner with his wife, Michele, and bring his experience and knowledge of aesthetic medicine to Renew.

Michele Zimmerman M.S.N., C.R.N.P.

Nurse Practitioner/Owner

Michele Zimmerman graduated from West Chester University in 1997 with a Bachelor of Science degree in nursing. She worked as a Critical Care Registered Nurse until 2008 when she received her Master of Science degree in Nursing as a Family Nurse practitioner from Wilmington University. She continued to work in acute care until 2013 when she began practicing outpatient Internal Medicine with her husband, Dr. Karl Zimmerman.


Michele founded Renew Laser and Aesthetic Medicine with her husband in 2018. She brings over 20 years of medical and nursing experience to Renew. She has completed advanced training and is certified in Botox and filler injections. She is excited to bring her knowledge and experience together with an expert staff to provide safe and effective skin rejuvenation services to our client’s.

Jenny Munro

Certified Laser Technician

Jenny graduated in 1995 with a bachelor’s degree in Marketing Management. While working in sales, marketing, and public relations for the DuPont Corporation, she began her part-time fitness career, leading group fitness classes. Eventually, she left the corporate world to follow her passion for fitness and wellness, which began her career in facility and program management with the YMCA of Delaware. Over the past 30 years, Jenny has expanded her fitness expertise by becoming a certified personal trainer and wellness coach, a trainer for the American Red Cross, plus, she owns her own organic spray tanning business.

Jenny joined the Renew team in 2018. She has completed extensive training and received certifications in laser technology, HydraFacial, and multiple medical grade skincare lines. She specializes in Laser Hair Removal, IPL Photofacial, ReSurfx Photofractional Skin Resurfacing, and HydraFacial. She is passionate about helping men and women feel and look their very best.

Laura Carpenter

Licensed Medical Esthetician, Certified Laser Technician

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Laura brings over 12 years of experience in the Medical Skincare Industry to Renew. She graduated from the University of Delaware in 1995 with a Bachelor's Degree in Dietetics and Fitness. She later earned her Certification in Comprehensive Medical Aesthetics from Dawn Career Institute, her Laser Certification from NoVa Laser and Aesthetics as well multiple Certifications in Medical Grade Skin Care Lines.


Laura has vast knowledge and experience in performing Chemical Peels, Microdermabrasion, Dermaplaning, Hydrafacials, IPL Laser, Laser Hair Removal, Microneedling, Photo Rejuvenation and Radio Frequency Technology.


Laura has both passion and enthusiasm for helping people to achieve healthy skin. She strives to make each of her clients look and feel their very best. She builds long-term relationships by taking the time to listen to her clients concerns and provide them with the proper tools to achieve their skin care goals. She prides herself in establishing a personalized comprehensive medical skin care program utilizing multiple modalities for each individual. She specializes in treating sun damage, fine lines and wrinkles, rosacea, acne and acne scarring, unwanted hair, uneven skin tones and overall skin rejuvenation. Her mantra is "Love the Skin You're In". 

Erin Gallagher

Licensed Medical Esthetician

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Erin graduated in 2017 with a Bachelor’s Degree in Education from California University of PA. She began her teaching career as an elementary teacher in Unionville, PA.  Erin has always had a love for skincare and make-up, so while teaching, she became a part-time freelance make-up artist. This sparked her inner passion further into the skincare industry, so she pursued her education in esthetics.  She graduated from The Beauty Institute with her Esthetician’s License and also attended the Institute for Laser Medicine and earned her Laser Certification.

Erin is excited to join the team at Renew. She is looking forward to gaining more knowledge and training in other areas of the medical spa industry.

Kathleen Ruggeri

Dietitian, Health & Fitness Expert

Kathleen graduated from Immaculata University with a master’s degree in nutrition in 2005. Shortly after graduation, she began to work as a part of the Nutrition and Dietetic Department at The Chester County Hospital. During her time there, she was given the opportunity to work with diverse patient populations and gain experience treating a variety of chronic medical conditions such as obesity, hypertension, diabetes, high cholesterol, chronic kidney disease, celiac disease, and many more. 

Kathleen believes in living an active, healthy lifestyle. She incorporates her passion for nutrition and exercise into her daily routine. She is  happy to partner with the healthcare providers at Renew Laser & Aesthetic Medicine to develop Renew Nutrition for life. Nutrition for life is a personalized weight loss program that promotes healthy eating and exercise to help each client reach their individual fitness and weight loss goals. 

Kathleen has already helped hundreds of individuals lose weight and keep it off by teaching them how to make permanent, sustainable lifestyle changes. She is excited to work with the clients at Renew to give them the same amazing results!