Committed to Outstanding Patient Care

The board-certified physicians of the Cosmetic and Skin Surgery Center are dedicated to providing their patients with the most advanced and technically superb facial plastic, laser and skin care services in a safe, comfortable and discreet environment.


Dr. Michael R. Warner and Dr. Wyatt C. To combine their skills, expertise and extensive experience in dermasurgery and facial plastic surgery. The staff at the Cosmetic and Skin Surgery Center is committed to outstanding patient care and will do their best to make your experience a positive one.

Michael R. Warner, MD

Dr. Michael R. Warner is a board certified dermatologist who specializes in both cosmetic dermatology and Mohs micrographic surgery. A native of Frederick, Dr. Warner received his undergraduate and medical degree from the University of Maryland. He pursued a four-year residency in dermatology at the prestigious Cleveland Clinic Foundation in Cleveland, Ohio, and is certified by the American Board of Dermatology. Dr. Warner was chosen from competitors worldwide to complete a two year fellowship in dermasurgery. In 2001, Dr. Warner returned to Frederick and founded the Skin Surgery Center. When Dr. To joined the practice in 2004, they established the Cosmetic and Skin Surgery Center.

What is Dermasurgery?

Dermatology has experienced a boom of technology over the last 20 years. The advent of new lasers, cosmetic products and procedures led to the creation of a separate subspecialty called Dermasurgery. This subspecialty includes aspects of cosmetic dermatology, plastic surgery, Mohs micrographic surgery, laser dermatology and more. To obtain the highest level of expertise within dermatology, selected dermatologists undertake one or two years of fellowship training in addition to the traditional four year residency.

Wyatt C. To, MD

Dr. Wyatt C. To is a facial plastic surgeon specializing in rejuvenation of the aging face, rhinoplasty and facial reconstruction. He is certified by the American Board of Facial Plastic and Reconstructive Surgery and the American Board of Otolaryngology (ABO). Born and raised in Ann Arbor, Michigan, Dr. To attended the University of Michigan for college and medical school. He completed a six year residency in Head and Neck surgery at the Cleveland Clinic Foundation in Cleveland, Ohio, before obtaining a prestigious American Academy of Facial Plastic & Reconstructive Surgery (AAFPRS) fellowship with Dr. Calvin M. Johnson, Jr., one of the world’s premier facial plastic surgeons.

Following his fellowship, Dr. To served as the facial plastic surgeon at the nationally renowned Cleveland Clinic Florida. In 2004, Dr. To moved to Frederick to join Dr. Michael Warner forming the Cosmetic and Skin Surgery Center.

Dr. To has lectured extensively at national meetings and published numerous scientific articles and book chapters. He has recently co-authored the full length textbook Open Structure Rhinoplasty: A Case Study Approach.

Susan Young, R.N.

Susan Young, R.N. joined The Cosmetic & Skin Surgery Center in the summer of 2010 as our Cosmetic Laser Nurse. Susan earned her Bachelor of Science from Frostburg State in 1997 and from there pursued her nursing degree. She has been a nurse for over ten years and during that time has received extensive training and experience administering cosmetic and laser procedures including BOTOX® injections, JUVÉDERM®/Voluma®/Radiesse® injections, SculpSure® permanent fat reduction, laser tattoo removal and laser hair removal. Susan is also one of few providers in the region who is certified to perform Ultherapy™, the best non-surgical skin-tightening treatment in the industry.

Jessie Mallalieu, PA-C, MS

Jessie Mallalieu, PA-C, MS joined The Cosmetic & Skin Surgery Center in March 2013 as our Surgical and Cosmetic Physician Assistant.  Jessie earned a master’s degree in Health Science and Physician Assistant Studies from Philadelphia College of Osteopathic Medicine in 2004 and then joined the Laser Center of Maryland near Annapolis.  She continued her passion for aesthetic medicine at the prestigious Johns Hopkins Bayview Medical Center, where she assisted in numerous plastic and reconstructive surgeries.  Ms. Mallalieu later served as a founding member of The Laser Center at The Peaks in Telluride, Colorado, rendering exclusive cosmetic services in the world-renowned luxury spa.

With over a decade of experience, Jessie offers expertise in all aspects of surgical, cosmetic and laser dermatology.  She specializes in injectable fillers (Juvederm®, Voluma®, Restylane® and Radiesse®) and neurotoxins (Botox®, Xeomin® and Dysport®).  In fact, Jessie now travels the country as an Advanced Injector training other providers for Galderma®!

Jessie also specializes in a wide variety of other services such as SculpSure® permanent fat reduction, Kybella® injections, laser hair removal, laser tattoo removal, and laser skin rejuvenation.  Jessie is certified to perform Ultherapy™, and she is the premier provider of Sclerotherapy for leg spider veins at The Cosmetic & Skin Surgery Center.

Jessie is one of the few physician assistants in the area who has obtained Board Approval for these advanced skills.  She utilizes her plastic surgery training to perform excisions for various dermatologic lesions.  We are very excited that Jessie is the head of our Excision Clinic!

Click here to learn more about Jessie’s personal project.

Tami McKinney, PA-C, MS

Tami joined The Cosmetic & Skin Surgery Center in November 2014 as our Clinical Dermatology Physician Assistant.  Tami is a graduate of the Saint Francis University/AACC Physician Assistant Program and obtained Board Approval for advanced skills in dermatology.  She received her master’s degree in Medical Science in 2013.  Tami holds undergraduate degrees in both Biology and Physical Therapy from Towson University and Pennsylvania State University.

Tami’s passion to provide high quality patient care is clearly discerned during your Skin Screening appointment.  Necessary time is taken to ensure you feel sufficiently cared for, heard, and valued.  You can be confident that each visit will include:

  • An attentive, full body skin exam
  • Same day biopsies as needed
  • In-house referrals for Mohs Micrographic surgery and Excisions
  • Personalized skin care recommendations

Tami holds comprehensive training in general dermatology with Dr. Larry Warner and Dr. Michael Warner.  In her first year with The Cosmetic & Skin Surgery Center, Tami diagnosed over 200 skin cancers in their earliest stages.  Catching skin cancer early allows a person to benefit from procedures that won’t require invasive surgeries, radiation or chemical therapies.  You can trust Tami’s dedication to you and your skin health each time you visit.

Sarah E. Jennings, MSN, FNP-C

Sarah joined The Cosmetic & Skin Surgery Center in January 2018 as our Clinical Dermatology Nurse Practitioner.  She is a Board Certified Nurse Practitioner credentialed by the American Academy of Nurse Practitioners.  Her Master of Science in Nursing is from State University of New York, with specialized clinical experience in Dermatology.  Sarah joins us with more than 5 years’ experience in medical and cosmetic dermatology.

During your Skin Screening appointment, Sarah is committed to providing a customized, comprehensive and pleasant experience for you.  You will receive her complete attention as your needs are evaluated and recommendations shared.  You can expect the following each time you visit:

  • A careful, full body skin exam
  • Same day biopsies as needed
  • In-house referrals for Mohs Micrographic surgery and Excisions
  • Individualized skin care product recommendations

Sarah draws from advanced training with Dr. Michael Warner, Dr. Wyatt To and Dr. Larry Warner.  This collaborative method to your skin health assures you receive the excellence in care that is consistently delivered at The Cosmetic & Skin Surgery Center.

Dr. Michael Warner is my cosmetic dermatologist. He does a lot of cancer type of procedures. He practices with a plastic surgeon, so they do it so that there is less scarring. They also do aging (procedures). They are really up to date on all the latest procedures and new techniques that are available. In their office they offer all sorts of different types of medical interventions. I would definitely use his services again in the future.* *Individual results may vary.

- P.M.