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Dr. Diane Howlin, MD, FACP

Dr. Howlin is a native of Michigan and graduated from the University of Munich medical school in 1987. This allowed for a unique education of European trends in medicine and natural ways of treating the body, many of which eventually came to the United States. Dr. Howlin’s internal medicine internship and residency were completed at St. Joseph Mercy Hospital in Ann Arbor, Michigan. In 2000, she became a Fellow of the American College of Physicians, a prestigious award for internal medicine physicians and is currently listed as one of America’s top doctors. In 2007, she became a fellow of the American Society for Laser Medicine & Surgery.

Dr. Howlin has practiced internal medicine in Chelsea, Michigan for over 25 years, six of which were for the University Of Michigan Department Of Internal Medicine as Clinical Assistant Professor of Medicine. Her philosophy in medicine is to provide timely care with a pleasant atmosphere and up to date evidence-based medicine. Due to frequent requests and a long-standing interest , she added aesthetic services to the practice in 2005. She has trained extensively around the country and internationally under experts in the field and is now a clinical preceptor for laser education for Lumenis and a certified Botox and Juvederm injector. Dr. Howlin is an advanced injector of Botox, utilizing the medication for unusual uses of pelvic floor muscle spasm (obturator), TMJ pain, migraine, hyperhidrosis, and anal fissures. Dr. Howlin also serves as an expert witness for the State of Michigan in internal medicine cases, criminal, licensure and more recently aesthetic medicine.


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Holly Darcy is our Director of Aesthetic Services, and is a Certified Medical Assistant, Certified Laser Technician, and Medical Laser Safety Officer. She is certified in multiple laser treatments and skilled in both chemical peels and microdermabrasions. She provides expert Visia skin analysis, skin care treatments, laser consults and procedures. Holly is also experienced in the use of cold laser for smoking cessation, pain relief, wound healing, and weight reduction.


Office Staff

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Leslie Wentz, office Manager

Leslie has been working with Dr. Howlin for 20 years and has expertise in all of our cosmetic procedures, products and the full care of the practice. She is the main face at the front desk who personally answers your phone calls and questions. Leslie will schedule your procedures and troubleshoot any questions that may arise.

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Lindsay Blackburn, Business Manager

Lindsay is responsible for all of our business matters; you may see her helping the office manager up front or marketing in the back. She has experience in both customer service and human resources and wants to ensure each patient is 100% satisfied with their experience here.

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Tavi Parker, Medical Assistant

Tavi is a recent graduate from Baker College with an Associates of Applied Science- Medical Assisting degree. She is medically trained in EKGs, pulmonary function tests, injections and assisting in surgical procedures. She cheerfully takes all of our patients to their exam room and will assist Dr. Howlin with anything she may need.