At Arrowhead Dermatology, we recognize that your choice of a dermatologist is driven both by the doctor's competency and personality. When searching for dermatological treatment, you need a dermatologist who is experienced, understanding and supportive. You get this caring attitude from all the staff at Arrowhead Dermatology every day. Our staff works together as a team to be sure we are responsive to your needs and keep you informed about your health issues. We look forward to getting to know you.

Deer Valley Staff

Avondale Staff

Carefree Staff


Our Providers

keith j. HaarKeith J Haar, M.D.

Dr. Keith Haar, MD and board certified dermatologist, is the founder of Arrowhead Dermatology. Dr. Haar is a 1987 graduate of the Uniformed Services University of the Health Sciences (USUHS) in Bethesda, MD. He received his outstanding dermatology training and residency in the USAF at Wilford Hall USAF Medical Center in San Antonio, TX. Dr. Haar received his undergraduate degree from the United States Naval Academy at Annapolis, MD, and served in the United States Marine Corp prior to attending and graduating from the Uniformed Services University of Health Sciences in Bethesda, MD.He was board certified in dermatology in 1992 and was recertified by examination in 2002. He served as Chief of Dermatology Services at both Scott AFB, IL and Luke AFB, AZ prior to departing the USAF. Dr. Haar started Arrowhead Dermatology in 1999. He takes pride in, and works in earnest, to stay on the cutting edge of the rapidly evolving world of dermatology services and techniques available. Dr. Haar consistently exceeds continuing medical education requirements. He is a member of the Maricopa County Medical Society, Phoenix Dermatologic Society, Arizona Dermatology Society, the Pacific Dermatologic Association, and the American Society of Mohs Surgeons. Dr. Haar is a Diplomate of the American Board of Dermatology, and a Fellow of the American Academy of Dermatology. Dr. Haar looks forward to welcoming you to Arrowhead Dermatology.


Lisa HynesLisa Hynes, M.D.

Dr. Hynes was born in California and raised in Indiana and Michigan. Certified by the American Board of Dermatology in 1997, Dr. Hynes specializes in clinical dermatology and dermatological surgery with specific interest in the treatment of skin cancer and other sunlight-induced lesions. Dr. Hynes completed her undergraduate studies at the University of Michigan. After graduation she moved to Philadelphia to obtain her medical degree at the Medical College of Pennsylvania, graduating summa cum laude. She then moved on to Florida to complete her internship at the University of Miami and her Dermatology residency at the University of South Florida.

Dr. Hynes joined Arrowhead Dermatology in 1999 after serving as Chief of Dermatology Services at Luke Air Force Base. Dr. Hynes prides herself on taking the time necessary to listen to and communicate with all of her patients. She is active in the community and enjoys spending time with her two children Cassandra and Robert. She is a fellow of the American Academy of Dermatology.


Dr. JJulie Jacobs, D.O.

Dr. Julie Jacobs, DO was born and raised in San Diego, California. She completed her undergraduate studies at the University of San Diego. She received her medical degree at Touro University College of Osteopathic Medicine, California and completed her Dermatology training at Oakwood Southshore Medical Center/Michigan State University in southeast Michigan. Dr. Jacobs joined Arrowhead Dermatology in September 2008, practicing general and cosmetic dermatology. As a board certified dermatologist, Dr. Jacobs is an associate member of American Osteopathic College of Dermatology and of the American Academy of Dermatology. Dr. Jacobs enjoys spending time with her family, as well as fitness, swimming, outdoor activities, and travel.


ChuckChuck Rimer, P.A-C

Chuck Rimer is retired from the United States Air Force serving more than 20 years. He received his Master's and PA degree from the University of Nebraska. He was nationally certified in 1998. Chuck has been with Arrowhead Dermatology since 2002.



HURTKathlynn Hurt, P.A-C

Kathlynn Hurt was born in Joliet, Illinois. She graduated from Pharmacy school at Creighton University in Nebraska in 1976, and received her Physician Assistant degree in May 2002 from Midwestern University in Arizona. She was nationally certified in June 2002, prior to joining Arrowhead Dermatology in July 2002.





caudleBecky Caudle, P.A-C


Becky Caudle was a paramedic for 14 years and received her PA degree from Midwestern University in Arizona. She was Board certified in 2002 and practiced at the Arizona Burn Center prior to joining Arrowhead Dermatology. She is a fellow with AAPA as well as the SDPA and was recently awarded the status of Diplomat with the SDPA. Her oldest son David is currently serving in the Navy. Stewart is an EMT/FF with Rual Meto FD and her youngest son Paul is a "work in progess". Becky has been married to her husband Dan for 16 years. She fell in Love with skin while working at the Arizona Burn Center.

Dr. w

Katherine J. Weidenbach, MSN, NP-C, DCNP

Katherine is a dedicated nurse practitioner who is nationally certified in the specialty of dermatology.  With over 30 years in the medical field she brings the knowledge and experience to offer quality individualized care to each of her patients.  Katherine earned her Bachelor of Science in Nursing from Idaho State University and a Master of Science degree in both Community Health and Family Nurse Practitioner from the University of Texas.  After completing her education Katherine worked in Family Practice before entering the field of dermatology.  She is committed to excellence in professional practice and patient care. 




Andrew Hicks, P.A-C

Andy Hicks is originally from Texas, but has spent most of his life growing up in Arizona. He attended the University of Arizona where he earned his undergraduate Bachelor of Science degree in Microbiology and Bachelor of Health Science degree in Physiology. Andy continued his education at the the UofA where he obtained his Master of Science in Pathobiology, and subsequently graduated from Midwestern University in Arizona to earn his Physician Assistant degree. Andy was nationally certified in August 2013, prior to joining Arrowhead Dermatology in September 2013. 



Megan Yanno, PA-C 

Megan Yanno is originally from Syracuse, NY who moved to the valley in 2009. She graduated from the University of Delaware earning her Bachelor of Science in Health Behavior and Fitness Management with a Certificate in Business Fundamentals. Megan attended the Arizona School of Health Sciences at A.T. Still University in Mesa, Arizona to earn her Master of Science in Physician Assistant Studies. Prior to joining Arrowhead Dermatology in February 2014, she worked in family practice and internal medicine. Her true passion has always been to specialize in dermatology and she strives to offer her patients the best possible care. Megan is board certified by the National Commission of Certification of Physician Assistants. She is a fellow member of the American Academy of Physician Assistants, the Arizona State Association of Physician Assistants and the Society of Dermatology Physician Assistants.


Ariel Kushner, Aesthetician  Ariel Bolin,  Aesthetician/CMLT  

Ariel Bolin, licensed aesthetician through the AZ State Board of Cosmetology, earned her certification through National Aesthetics Institute in 2002; as well as completing the Physician’s Choice of AZ Chemical Peel training course in 2003. Ariel works with sun damaged, acneic and aging skin and would love to assist in helping with your skin care needs. She has been with Arrowhead Dermatology since 2006. In her down time she enjoys hiking, baking and rock climbing.  


Shawn Marie, Aesthetician Shawn Marie Linsenmayer, Aesthetician/ CMLT Patricia Wolverton, Aesthetician  AAesthetician  A AAAAAAAA

Shawn-Marie Linsenmayer, Licensed Aesthetician through Arizona State Board of Cosmetology. Shawn-Marie grew up in Northern California, and received her certification through Citrus Heights Esthetics College. She continued her advanced training with International Dermal Institute in San Francisco, California.

Shawn-Marie owned a skin care salon for several years before re-locating with her family, to her native Arizona. She specializes in acne, sun damaged skin, anti-aging treatments and cosmetics. Shawn-Marie is passionate about skin care and making people feel their best. Shawn-Marie and her husband live in Peoria and have four children. In her spare time, she loves to read and spend time with her family at their various sporting events. 



 Patricia Wolverton, Aesthetician/CMLT  

Patricia Wolverton, Aesthetician Patricia Wolverton is a licensed aesthetician, certified in oncology, and laser technician with 10 years experience specializing in the field of plastic surgery. She has a passion for patients with all types of health challenged skin including brown spots, acne, and sun damaged skin, but especially for those going through or recovering from cancer treatment. Patricia has specialized training to provide modified skin therapies to help reduce some of the stress and anxiety associated with this battle. Her “hands on” depth of care allows her to be an informed partner with you and customize treatments for your skin.

She earned her licensure through IMAJ (Institute for Medical Aesthetics) laser school and is certified by the Arizona Radiation Regulatory Agency. 




Naetresse Begley, Aesthetician/CMLT

Naetresse Begley, Aesthetician/CMLTNaetresse was born and raised in Arizona. She received her training through the Skin and Makeup Institute and Image Laser school. She is certified through the Arizona Radiation Regulatory Agency and is also certified for Microneedling. Naetresse has been doing medical aesthetics and lasers since 2007. She loves her job, her clients and building a long term relationship with them. Naetresse specializes in treating acne, acne scarring, stretch marks, discoloration, wrinkles and much more! She has been to numerous continuing education courses and always wants to know the latest and greatest treatments to offer for her clientele, including Fraxel and Microneedling. She would love to answer any questions you have and help you with your skin care needs. When Naetresse isn't helping her clients enhance their beauty, she enjoys spending time with her husband and beautiful daughter.





Central Appointment Line

(623) 487-3003

 7767 W Deer Valley Rd, Peoria, AZ, 85382-2103 ~ 10750 W McDowell Rd Avondale, AZ 85392 

2525 W Carefree Hwy, Phoenix, AZ 85085