About Us

Precision Skin Institute

Precision Skin Institute provides comprehensive, cutting-edge, and compassionate care for you and your skin. We were founded by Marianna Blyumin-Karasik MD, FAAD and Lesley Clark-Loeser MD, FAAD, colleagues and friends who have worked together for many years. Both Doctors are well published Dermatologists recognized as leaders in their field.

Precision Skin Institute Certifications

Healthy Skin.
Healthy You.

Precision Skin Institute is an individualized practice focused on addressing the specific skin care needs of each and every one of our patients driven by our core values os authenticity, integrity, and professionalism. To enhance our patient outcomes we pride ourselves in educating and empowering you with the necessary tools to have lifelong healthy and beautiful skin.

We offer a full range of dermatological services, from skin cancer screenings to the latest in cosmetic dermatology procedures such as laser technologies and injectables such as Botox®, Sculptra®, Restylane® and Juvederm®.

Dr Clark Loeser Headshot

Lesley Clark-Loeser MD, FAAD

Dr. Lesley Clark-Loeser, a mother of three and a South Florida native, retuned home in 2005 to practice Dermatology.

At seventeen, Dr. Clark-Loeser headed to the Northeast where she attended both undergraduate and medical school at the George Washington University. She continued her move north as she completed her internship in Internal Medicine at Pennsylvania Hospital (UPHS) and then settled in New York City for the following six years. In New York City, Dr. Clark-Loeser completed her residency in Dermatology, as well as a two year fellowship in dermatopharmacology at the New York University School of Medicine. In addition, she trained for one year at the Memorial Sloan-Kettering Cancer Center as a pigmented lesion fellow.

Dr. Clark-Loeser has authored and co-authored over 15 professional articles and book chapters. She has served as an investigator in more than 25 clinical trials.

While in private practice, her commitment to both peer, community and patient education continues. Dr. Clark-Loeser feels strongly about both supporting and giving back to the community. Whether sitting on the Board of Directors of a community organization, lecturing to school age children about sun safety, volunteering in community projects or working in her practice, she is passionate about what she does.

Dr. Clark-Loeser is a diplomat of the American Board of Dermatology, board certified since 2005. She maintains membership in the American Academy of Dermatology, American Society for Laser Medicine and Surgery, Florida Society of Dermatology and Dermatologic Surgery, the Women’s Dermatologic Society, Broward Dermatologic Society, and is a member of the Davie Chamber of Commerce.

Dr. Clark-Loeser is fluent in Spanish.

Dr Blyumin Karasik Headshot

Marianna Blyumin-Karasik MD, FAAD

Dr. Marianna Blyumin-Karasik is a dedicated dermatologist serving the community of Davie, Florida. She is a proud mother of a young daughter and toddler boy and girl twins.

Dr. Blyumin-Karasik immigrated to United States from Estonia when she was 12-years old. She grew up in Potomac, Maryland and attended Georgetown University undergraduate College and Medical school in Washington DC. She continued her training by completing a Dermatology Research Fellowship at Harvard University, Massachusetts General & Brigham and Women’s Hospital in Boston. She then moved to Florida to complete her residency in Dermatology at the University of Miami Jackson Memorial Hospital.

Dr. Blyumin-Karasik is board certified by the American Board of Dermatology since 2009. She is a member of the American Academy of Dermatology, Florida Society of Dermatology and Dermatologic Surgery, the Women’s Dermatologic Society, Broward Dermatologic Society, and is a member of the Davie-Cooper City Chamber of Commerce.

Dr. Blyumin-Karasik has published over 40 scientific articles in medical journals and presented dermatology lectures on the national and international levels. Dr. Blyumin-Karasik’s leading skin care advice is regularly featured on the Channel 10 news and in the national magazines such as Glamour and Elle.

Outside of her practice, Dr. Blyumin-Karasik enjoys running, traveling, and writing. She believes in listening to each patient and creating a partnership to maintain and improve lifelong skin health. She speaks Russian fluently and has medical knowledge of Spanish, which makes her widely accessible to patients from a variety of cultural backgrounds.

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Beena Jacob

Physician Assistant

Our newest member of the Precision Skin Institute team is Beena Jacob. Beena is a Physician Assistant who has been specializing in working in dermatology for over 15 years.

A Florida transplant from the New York area, Beena grew up in South Florida and now resides in Weston. Throughout the course of her career, she has obtained advanced aesthetic training in cosmetic procedures and medical dermatology treatments. Beena has tremendous experience in working with various injectables, peels, and lasers.

A graduate of Nova Southeastern University, Beena received a Bachelor of Science in Physician Assistant Studies. She is a licensed Florida Physician Assistant and is also nationally certified as a Physician Assistant (PA-C).
Beena’s past professional experience includes: Allergan Trainer, Hancock Review Course Lecturer for Dermatology and a speaker for Prugen Pharmaceuticals.


Kiersten Armstrong

Licensed Aesthetician
Laser Technician

Kiersten’s passion for aesthetics goes more than skin deep. She graduated from Boca Beauty Academy and is a licensed Aesthetician, Electrologist, and Laser Hair Removal Technician. She is driven by a desire to help people look and feel their best from the inside out. She believes with self-confidence you can achieve anything.

Jenine Delehanty Head Shot

Jenine Delehanty

Licensed Aesthetician
Certified Laser Hair Removal

A graduate of the Florida College of Natural Health, Jenine received her Electrolysis and Aesthetician license along with a certificate in laser hair removal before embarking on an exciting career in the aesthetic industry. With many years of experience behind her, Jenine joins the team at Precision Skin Institute, eager to help our patients feel and look their best. Attentive, warm, and talented to her core, Jenine remains dedicated to delivering optimal results, and we are so honored to welcome her to our Precision Skin Family.