About Our Skin Specialists

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

Martin Blume, DO, MBA, Chief Executive Officer

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 is also a Certified Advanced Injectable Instructor at our Scottsdale Laser & Injectable Institute. Dr. Blume is an excellent instructor for novice to advanced injectors. He trains doctors and nurses wishing to learn or improve their skills at the art of facial injections.

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, Chief Operating Officer, Practice Director

bust_sandraCertified Supervising Laser Instructor & Technician, Licensed Medical Aesthetician

Sandra has over twenty years of experience in Medical Aesthetics, Laser Treatments, Customer Service, and Retail Operations. As the Practice Director, she is committed to exceeding patient expectations and giving outstanding personal service. Sandra is the Laser Safety Officer at Blume Skin & Body and is the lead Laser Instructor at our laser and injectable school. The Scottsdale Laser & Injectable Institute is located within Blume Skin & Body. Sandra has advanced certification in: Laser Technology, CoolSculpting, Ultherapy, Venus Legacy, Venus Viva, MonaLisa Touch, Pollagen Legend Voluderm, 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 (a lab and two beagles) and spending time with and her granddaughters Abigail and Isabel.

Mary M. Romero, MD

mary romaroDr. Romero has been in practice since 2003. She is certified with the Arizona State Board of Medical Examiners and is board certified with the American Board of Obstetrics and Gynecology. Dr. Romero has five years of experience with aesthetic injections and has attended numerous advanced courses in this field. With her surgical skills and love of procedures, she enjoys helping people achieve a more youthful appearance with natural looking results.

She previously owned Aesthetics By Dr. Romero where she practiced aesthetic injections, chemical peels, natural hormone pellet therapy and weight management. She has combined her practice with the Blume Skin Centre to enhance the offerings for her patients. Dr. Romero received her medical degree from the University of Arizona and holds a Bachelor of Science degree in Clinical Laboratory Sciences from Arizona State University. She completed her OB/GYN residency at Banner Good Samaritan Regional Medical Center in Phoenix, Arizona. Dr. Romero has worked as an Obstetric Hospitalist and an attending physician, training medical students and residents. Dr. Romero enjoys traveling, outdoor activities and sporting events with her husband and two sons.

Caitlin Sixbey, Senior Licensed Medical Aesthetician

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

Caitlin has been a certified Medical Aesthetician and Laser Technician for nine years. She has been with The Blume Skin Centre for three years. The Blume Skin Centre patients rely on Caitlin to provide medical grade facials and customizing their skin care routine. Caitlin has received advanced training and certification in the following: Ultherapy, Venus Legacy, Sciton BBL, Photofacials, Pollagen Legend +, Venus Viva, Radio Frequency Skin Tightening, Radio Frequency Resurfacing, Radio Frequency Microneedling, Certified Phlebotomist. Caitlin is an expert in: Chemical Peels, Dermasweep, Plasma Rich Protein (PRP), Microneedling, and Customized Airbrush Spray Tanning. Caitlin is originally from Rochester NY, in her free time, Caitlin likes to watch movies, take new fitness classes and spend time with her family and kitties.

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