COVID-19 Emergency Information

During this COVID -19 emergency patient safely is our greatest concern.

  • We are offering telemedicine visits so we can help you while you stay home and safe.
  • We are following all the current CDC guidelines regarding social distancing, office enhanced cleaning procedures and infection control procedures.

    For more information, check the CDC website here.

    Welcome to Our Practice

    Welcome to Precision Dermatology, Your Dermatologist in Sun City, AZ

    At Precision Dermatology, our focus is on excellent patient care. From the moment you enter our spacious waiting room to the moment you complete your visit, we want you to have a positive experience.

    Our web site also provides you with background about our staff, office hours, insurance policies, appointment procedures, maps, directions to our office in and other useful information. We know how hectic life can be and are committed to making our practice convenient and accessible. And we want you to feel confident that when you choose , you're working with doctors and other professionals who are qualified, experienced and caring.

    Please take a few moments to look through this site to get a better feel for Precision Dermatology's capabilities and some of our services such as, MOHS Surgery, basal cell, skin cancer, and much more. We also invite you to email or call our office at any time to request an appointment or ask any questions. Thank you.

    Click Here To Take Our Survey


    Meet Our Staff

    • Patricia A. Carroll-Chen, M.D.

      Dr. Carroll-Chen is a fellowship trained specialist in Mohs Micrographic Surgery and Reconstruction.

      Dr. Carroll-Chen was a Cum Laude Graduate, an Illinois Benedictine Scholar (1983-1987) and won the Illinois Benedictine Biology Award in 1984.

      She has held a membership in Alpha Omega Alpha (AOA-National Medical Honor Society) and was also the recipient of the Dr. C.M. Craig Fellowship (Summer Research Fellowship) in 1990.

      Dr. Carroll-Chen attended University of Illinois in Chicago for medical school and residency in dermatology. She then went to Kansas City to do a one year fellowship in Mohs micrographic surgery and surgical reconstruction.

      Dr. Carroll-Chen is Board Certified by the American Academy of Dermatology and is a member of the American College of Mohs Micrographic Surgery and Cutaneous Oncology.

    • Timothy P. Salmon, M.D.

      Dr. Salmon is a graduate of University of Pittsburgh School of Medicine. He completed residencies in both Internal Medicine and Dermatology.

      Dr. Salmon is Board Certified by the American Academy of Dermatology. He has been in practice for over 30 years.

      He has memberships in Alpha Omega Alpha (AOA - National Medical Honor Society) and Phi Beta Kappa (PBK - National Honor Society of Liberal Arts & Sciences).

      Dr. Salmon was also a Clinical Instructor for the Dermatology Department at Mayo Clinic Medical School in Rochester, MN.

    • Anna (Anya) Kryuchina, P.A.

      Anna Kryuchina is a board-certified physician assistant specializing in Dermatology. She was born in Russia, and after completing her undergraduate studies in Arizona, she spent several years living in Canada before moving back to the desert. Her formal PA education was completed in Buffalo, NY where she received her master's in physician assistant studies, graduating with cum laude honors.

      As an active member of the Society of Dermatology Physician Assistants (SDPA) and Phoenix Dermatologic Society, Anna is passionate about her career in dermatology and working closely with patients to achieve their health goals. Anna’s master’s thesis on melanoma detection among skin cancer patients was recognized at the 2017 American Academy of Physician Assistants conference in Las Vegas, NV. She is founder and editor of a PA education forum which focuses on high quality clinical medicine and networking with other clinicians.


    What Our Clients Say About Us

      Coming soon!


      Coming soon!


    Featured Articles

    Read about helpful topics

    • Neurodermatitis

      Neurodermatitis around the anklebone: Scratching an itchy patch around the ankle caused the neurodermatitis to appear. Neurodermatitis: Overview Neurodermatitis is a skin condition that begins with an itch.The itch can develop anywhere on the surface of the body. Most commonly, though, an itchy patch ...

      Read More
    • Nummular Dermatitis

      Nummular dermatitis: This skin problem often causes coin-shaped rashes on the skin that can itch or burn. Nummular dermatitis: Overview Also called discoid eczema People who get this skin problem often see distinct, coin-shaped (nummular) or oval sores on their skin. Nummular dermatitis often appears ...

      Read More
    • Moles

      Moles are common. In fact, light-skinned adults typically have 10 to 40 “common” or “normal” moles on their skin. When you talk to your dermatologist about your moles, he or she may use the word “nevus.” Nevus is the medical term for mole. When your dermatologist is talking about two or more ...

      Read More
    • Skin Cancer

      Skin cancer is the most common cancer. Current estimates are that 1 in 5 Americans will develop skin cancer in their lifetime. When detected early, skin cancer is highly treatable. The most common warning signs of skin cancer include changes in size, shape, or color of a mole or other skin lesion or ...

      Read More
    • Acne

      If you have acne, also called acne vulgaris, you’re not alone. It is the most common skin condition in the United States. Approximately 40 to 50 million Americans have acne. Most are teens and young adults but it can occur at any age.Newborns get acne. Children get acne. Even menopausal women get acne. At ...

      Read More
    • Lupus and Your Skin

      Lupus is an autoimmune disease, a condition in which your body’s immune system attacks healthy cells. Lupus can affect many organs in your body, including your skin. The skin is affected in approximately two-thirds of people who have lupus. Discoid lupus erythematosus (DLE) flare WHAT IS LUPUS? There ...

      Read More
    • Lichen Planus

      Lichen planus is a skin disease that also is common inside the mouth. It also can affect your genitals, scalp, fingernails and toenails. WHAT DOES LICHEN PLANUS LOOK LIKE? On each part of the body, lichen planus looks somewhat different. The following describes what you can see on each part of the body. Skin On ...

      Read More
    • Laser Hair Reduction

      Unwanted hair is a concern for many people. If unwanted hair bothers you, you may want to discuss this with your dermatologist. Many dermatologists offer treatment for unwanted hair. One treatment option is laser hair removal. Laser hair removal reduces the amount of unwanted hair. A laser sends beams ...

      Read More
    • Hyperhidrosis (Excessive Sweating)

      Hyperhidrosis is excess sweating. We all need to sweat to keep our bodies cool. However, people with hyperhidrosis seem to have overactive sweat glands. They may sweat even when their body does not need cooling. Many people who have hyperhidrosis sweat from one or more areas of the body. Most often, ...

      Read More
    • How to Protect Yourself from the Sun

      Anyone can get skin cancer, regardless of skin color. Avoiding overexposure to the sun is the most preventable way to reduce your risk for all skin cancers, including melanoma, the deadliest form. Seeking shade, wearing protective clothing and applying sunscreen are important ways to protect your skin ...

      Read More

    Contact Us

    Send Us an Email

    Our Location

    Find us on the map

    Hours of Operation

    Our Regular Schedule

    Precision Dermatology


    7:00 am-4:30 pm


    7:00 am-4:30 pm


    7:00 am-4:30 pm


    7:00 am-4:30 pm