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.

Plus, his medical practice has maintained a top ranking for quality with multiple insurance providers. He prides himself for being thorough, compassionate, and taking a well-rounded approach to patient care. Dr. Zimmerman is excited to partner with his wife, Michele, to bring Renew Laser and Aesthetic Medicine to Kennett Square, PA. He is looking forward to bringing his knowledge and experience to the field of aesthetics to make the clients at Renew look and feel great in the safest most effective way.

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 believes in holistic medicine. Understanding the importance of treating the whole person both inside and out. She has completed extensive training to ensure that her clients receive the best possible care. She is excited to bring her knowledge and holistic care approach to laser treatments and aesthetics in the Kennett Square area.

Jenny Munro

Laser Technician/Fitness Expert

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. After leaving the full-time workforce to raise her children, she continued to grow in her wellness business on a part-time basis.


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 teaching CPR & First Aid courses, plus, she owns her own organic spray tanning business. Her experience in the wellness and personal care industry has led her to work with the staff at Renew Laser and Aesthetic Medicine. Jenny has gone through extensive study and hands-on laser training and is passionate about helping men and women feel and look their very best.

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!

Laura Carpenter

Licensed Medical Esthetician, Certified Laser Technician

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". 

© 2020 Renew Laser and Aesthetic Medicine. All Rights Reserved.