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. J

Julie Jacobs, D.O.

Board certified Dermatologist, 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.


Ryan Stevens, M.D.Naetresse Begley, Aesthetician/CMLT

Dr. Stevens was born and raised in Phoenix, Arizona and attended the University of Arizona where he earned his Bachelor of Science degree in Microbiology. He continued at the U of A where he achieved academic honors at the top of his class and received his Doctor of Medicine in 2009. He completed his Dermatology Residency at University of Southern California and Los Angeles County Hospital in 2013, where he served as Chief Resident. Following his training, Dr. Stevens became as Assistant Professor at the University Of Southern California Department Of Dermatology. Dr. Stevens completed a prestigious Dermatopathology fellowship at the University of Colorado, and is an expert in the microscopic diagnosis of skin disorders, including skin cancers and inflammatory skin conditions. Dr. Stevens has lectured and presented on a national level. He specializes in dermatopathology and general dermatology, and has extensive experience in all aspects of Dermatology including medical and surgical treatment of skin cancers and diseases. His warmth, compassion and sense of humor lend well to his expertise in the delivery of quality patient-centered care.

His interests span from spending time with his wife and two children, to outdoor activities and following professional and college athletics. He is an avid University of Arizona Wildcat fan.


Carlos Rodriguez, M.D.

Dr. Rodriguez is a native of Chicago, IL, and earned both his undergraduate and medical degrees from the University of Illinois at Chicago. He completed a residency in dermatology at Cook County Hospital, as well as a dermatopathology fellowship at the prestigious University of Pittsburgh Medical Center. He has been in private practice in Arizona since 2010.

Dr. Rodriguez enjoys working both as a clinical dermatologist as well as a dermatopathologist. He divides his time between direct patient care and microscopic analysis of skin specimens. Dermatopathology is a subspecialty of dermatology and anatomic pathology which focuses on the diagnosis of skin diseases at the cellular level. Dr. Rodriguez has completed extensive formal training in the histologic interpretation of skin biopsies, and he is dual-board certified by both the American Board of Dermatology and the American Board of Pathology.

During his time away from the microscope, Dr. Rodriguez is an avid reader and martial artist. He has competed in the sport of Brazilian jiu-jitsu for over 2 decades and is currently ranked among the top 10 athletes in his category worldwide. Dr. Rodriguez is fluent in Portuguese and Spanish.


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.



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.



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.


Joan Altman PA-C Joan Altman, PA-C

Joan Altman was born and raised in Johnstown, Pennsylvania. She received her PA degree from Gannon University in Erie, Pennsylvania. She has been Board certified since 1991. She began her career as an orthopedic physician assistant, specializing in hands, pediatrics and sports medicine. After spending 10 years in orthopedics, she turned her focus to yet another specialty, dermatology.

She is a member of the American Academy of Physician Assistants, the Arizona State Association of Physician Assistants and the Society of Dermatology Physician Assistants.

Joan has been married to her husband Kurt for 22 years. Her interests span from spending time with her husband and three children, to being an avid hockey mom, hot yoga enthusiast and enjoying the great outdoors.


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. 


Naetresse Begley, Aesthetician/CMLTNaetresse Begley, Aesthetician/CMLT

Naetresse 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

Mindy Nigro, Aesthetician/CMLTNaetresse Begley, Aesthetician/CMLT

Mindy Nigro is a licensed Aesthetician through the Arizona State Board of Cosmotology.  She received her training and certification through Southwest Institute of Natural Aesthetics in Tempe, Arizona.  Mindy has a passion for healing and treating troubled skin. Her medical aesthetics training and laser certification enable her to offer the most advanced treatments and offer an integrative approach to wellness and beauty. She looks forward to meeting you and helping you to achieve your goals!


Courtney Hamby, Licensed Aesthetician/CMLT

Courtney Hamby is a licensed Aesthetician through the Arizona State Board of Cosmetology and a Certified Laser Technician through the Arizona Radiation Regulatory Agency. She received her Aesthetics certification at the Skin & Makeup Institute of Arizona and went on to the National Laser Institute to receive her certification in Medical Aesthetics. Courtney has a true passion for helping people feel beautiful in their own skin and always looking for ways to build her knowledge in the growing industry of Medical Aesthetics.





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