About Our Skin Specialists

Located in Scottsdale, AZ, The Blume Skin Centre was formerly Parkway Medical Laser & Skin Centre.

Martin Blume, DO, MBA

Dr. Martin Blume has been in practice since 1980. He is a graduate of Philadelphia College of Osteopathic Medicine and Arizona State University where he received a Masters Degree in Business Administration and is Board Certified. Dr. Blume is in a unique position to perform aesthetic procedures as he participated in a surgical residency in both Philadelphia, PA, and Phoenix, AZ. His overall knowledge and surgical skills have given him the ability to produce excellent results with realistic expectations. With his extensive experience in cosmetic injections, Dr. Blume has instructed at all levels of injection techniques for over a decade. He is an approved instructor for Allergan, makers of Juvederm and Botox, and is available for private instruction throughout the Southwest.
Dr. Blume previously managed Parkway Medical Urgent & Family Care and Parkway Medical Laser & Skin Centre in Scottsdale, AZ. He is certified in Family Practice, Managed Care, and Quality Improvement/Utilization Management.




Sandra Caldwell, Clinic Manager

bust_sandraCertified Supervising Laser Technician, Licensed Medical Aesthetician, Certified Advanced Ultherapist

Sandra comes to the Blume Skin Treatment Center with over twenty years of experience in Aesthetics, Laser Treatments, Customer Service, and Retail Operations. She is a skin specialist committed to exceeding patient expectations and giving outstanding personal service. Sandra has received advanced certification in: Laser Technology, CoolSculpting, Ultherapy, Venus Freeze, CO2 Pixel and BBL/IPL Photofacial. Sandra also has a Bachelor of Science Degree in Business Administration from San Jose State University. In her free time, Sandra loves to travel with her husband and dogs (two labs and a beagle) and spending time with her children Daniel and Darcy, and new granddaughter Abigail.





Caitlin Sixbey, Senior Licensed Medical Aesthetician

Caitlin Sixbey medical aesthetician scottsdale arizonaCertified Laser Technician, Certified Advanced Ultherapist

Caitlin joined the Blume Skin Centre in January 2013 with over seven years of experience in the medical spa industry. She moved to Arizona from Rochester, New York, where she worked in a medical spa in partnership with a dermatology practice performing Aesthetics procedures and Makeup Artistry. She has received her certification in Laser Technology, advanced training in Ultherapy and skin tightening with Venus Freeze. Her experience and knowledge in the industry has given Caitlin the ability to personalize treatment plans and assist her clients in all of their skin care needs. In her free time, Caitlin likes to watch movies, listen to music and spend time with her family and kitties.



Jennifer Fontius, MD

Jennifer Fontius, MD

Jennifer Fontius, MD grew up in the San Francisco Bay Area, obtained her bachelor’s degree in Physiological Sciences at UCLA and her medical degree at USC. She completed her residency in Family Medicine at UCLA and has worked in a variety of clinic since then. Dr. Fontius opened her current solo medical practice in North Scottsdale in 2011.
In addition to her medical practice, Dr. Fontius is the medical supervisor for a medical weight loss clinic and participates in Quality/Utilization activities for healthplans. She has been practicing aesthetics for eight years, having been trained and mentored by Dr. Blume. Dr. Fontius, is a clinical preceptor for the University Of Arizona College Of Medicine.
In her spare time, Dr. Fontius enjoys running, tennis, and travelling.



Everyone’s skin is different! Find the treatment that is right for you.