Meet our


At Skinjectables we only work with the best of the best. Our expertLy Trained injectors have decades of experience and are masters at providing natural results with gentle, precise hands.

Katie O'Brien

Founder & Clinical Director





As a Physician Assistant who has practiced both medical and aesthetic dermatology for more than 16 years, Katie’s extensive experience in “all things skin” is unrivaled.

With a background in non-surgical cosmetic treatments, which include Botox, fillers, LipoDissolve, Sculptra, and numerous laser modalities, such as SmartLipo, radiofrequency tightening, CO2 resurfacing, IPL, Katie decided to narrow her focus on what she was most passionate about: cosmetic injectables.

As an expert injector, Katie brings to Skinjectables® a level of artistry and expertise that is unparalleled in the realm of Botox™ & dermal fillers. Having been a lead clinical trainer for Advanced LipoDissolve Centers, as well as Clinical Director and owner of several aesthetic clinics in the Midwest, Katie has provided advanced training and education to practitioners around the country.

Katie places great emphasis on educating her clients about the safest, most effective treatments and techniques that are both research and clinically proven.

Through ongoing, advanced clinical aesthetic training with many of the country’s leading experts such as Kent Remington MD, Arthur Swift MD, Dr. Mauricio De Maio, and Lara Devgan MD, Katie continually provides her clients with the industry’s most therapeutic injectable interventions specializing in natural – not overdone- results.

In 2018, Katie’s level of expertise was recognized by Allergan, the aesthetic industry’s leading manufacturer of injectables. She was selected to become one of three elite trainers in the area on providing instruction and guidance for advanced industry techniques, safer practices and better client outcomes to other practitioners around the country.

Alisa Grimm





Alisa attended college and received her RN degree in 2004 right here in Tucson. Her medical career began as a recovery room nurse with an emphasis on cosmetic surgery. After working with several of the area’s most respected Plastic Surgeons for more than a decade and being entrusted with the care of their patients, Alisa expanded her cosmetic expertise to encompass being a provider of aesthetic services as well.

Alisa became certified in all aspects of aesthetic medicine, focusing her unsurpassable skills on all things injectable. Now, having attained a level of excellence through extensive hands-on experience, Alisa brings her knowledge and expertise to Skinjectables®.

She has mastered the art of, and specializes in, natural outcomes that our clients request and have come to expect with every experience at our clinic. As an xpert injector, Alisa is highly respected among her colleagues and a client favorite at delivering exceptional results in Botox and Dysport as well as the entire spectrum of dermal fillers, Kybella, and Sculptra. Skinjectables is honored to have her as an integral member of our team and part of our family!

Arlee Tamietti




Arlee is an Arizona native, born and raised in Sahuarita where she graduated high school and was awarded a full-ride athletic scholarship to Boise State University.  After completing her BS in Psychology and Biology at North Carolina State University, Arlee pursued a nursing career by obtaining her RN designation in Idaho.  Finding a passion in serving veterans, she then provided exceptional medical care on the med-surg unit at the Boise VA hospital.  In conjunction with her position at the VA, Arlee worked diligently to fine tune her specialized procedural skills to 

translate into a gentle-handed cosmetic injection specialist.  She focused on providing exceptional client outcomes and honesty-based treatment recommendations.  After returning to her home town, Arlee joined the Skinjectables’ team, adding her genuine, sincere personality and levity-filled approach.  When she’s not serving up anti-aging cocktails at Skinjectables, you can find Arlee coaching volleyball or out and about with her 2 amazing kiddos!  Pop by our Tucson or Green Valley location and welcome Arlee, but prepared to roll with laughter (just not AFTER your Botox;)





Yivonne McFarland




After receiving a BS in Nursing from the University of Phoenix,  Yivonne began her extensive medical nursing career in Cardiology, ER medicine, Labor & Delivery and as a Nurse Manager. Highly skilled in all aspects of nursing, Yivonne decided to utilize her injection skills as a cosmetic provider becoming certified in Botox, fillers and laser treatments in 2013.

For the past four years, she has practiced in the aesthetic setting delivering superb,natural-looking results in keeping with what her clients have come to expect from her.  Her attention to detail and desire for achieving excellent outcomes makes her a great addition to the Skinjectables’® team of medical professionals.

Consultations with Yivonne are always based upon her straightforward recommendations while keeping her client’s expectations as a top priority.  If your looking for a natural looking, real world and gentle approach, come see Yivonne for all your anti-aging needs!  You can find her tending Bar at Skinjectables® every 3rd Tuesday and 3rd Thursday of the month. 

Stacey Mitchell




Stacey joins Skinjectables® with significant nursing experience, having obtained her Bachelors of Science in Nursing at NAU in 2010.  Since 2008, she has worked in all aspects of medicine including respite care for children, TMS post critical care and cardiac telemetry.  As an RN, Stacey provided nursing care at the VA in rehabilitation and med/surg  as well as delivering exceptional nursing care at Premise Health in Nevada.  While her medical nursing skills are exceptional, Stacey discovered that her true passion was in aesthetic medicine, leading her to pursue higher learning in developing her skills as a cosmetic injector.  Not only did she demonstrate her eye for beauty in studying to become a makeup artist, but she used that creativity to become 

certified in cosmetic injectable treatments, with advanced training in dermal fillers, neurotoxins, micro needling and laser treatments.  Stacey’s priority is formulating treatment plans that ensure her client’s concerns are thoroughly addressed with the safest, most natural intervention possible.  Her genuine kindness and attention to detail are just some of the reasons why she has such an extremely loyal clientele.   

You can pop by Skinjectables® on Mondays, Wednesdays, Fridays and  on Happy Hours to experience Stacey’s gentle hands!

Kim Endean





As a Registered Nurse for more than 20 years, Kim brings a valuable touch to Skinjectables®. Her passion for rejuvenation and skin care became her sole focus more than 10 years ago as she began with her career  becoming an aesthetic RN provider.  Kim excelled so quickly in her artful, yet technical, approach to cosmetic injections that she was asked to become a trainer for one of the industry’s top manufactures of injectables.  She then established her own successful aesthetic practice and has worked for several of Tucson’s most prestigious aesthetic offices.  

Kim takes great care in helping her clients look and feel their best, while delivering the safest, most comfortable and exceptional injection experience. Assessing each and every client based upon their individuality, concerns and unique correction goals is her specialty- allowing clients to achieve the best, most natural looking outcome possible.  While not tending Bar at Skinjectables, Kim can be found actively involved with her two kids and attending the numerous sporting events they are involved in!
















Laura Case


Skincare Consultant




Laura Case


Laura Case recently joined the Skinjectable’s team, bringing with her more than 37 years experience in customer service and management.  Her warm demeanor and ever-smiling face is first to welcome you as you walk through our doors and her kind words of thanks will brighten your day as you depart.  Officially certified as an aesthetic consultant and laser technician, Laura is not only adept at answering all your anti-aging questions, but she can expertly recommend products to suit your skin care needs or procedures to compliment your anti-aging goals.   With an extensive background in  medical administration and vast experience in aesthetic medicine, Skinjectables proudly entrusts Laura with all of our client’s consultation needs.

Her impeccable skills in client relations paired with her genuine desire to ensure superb client experiences make her an invaluable member of our team.  When you call our office, most likely it will be Laura’s warm and friendly voice that will greet you and set the tone for your customized anti-aging journey at Skinjectables.  In her free time, you will find Laura joyfully playing with her two grandsons or chasing her big Labrador named Tebow.  An avid sports fan, lover of animals, interior design enthusiast and fashionista are just a few interests of Laura’s that keep her busy!


Yesenia Fimbres





Yesenia is a native Tucsonan who has worked in the aesthetic field for many years in both the administrative aspect as well as providing direct hands-on cosmetic treatments.  She offers a unique, soft approach to aesthetic care while utilizing a precision based protocol designed to deliver outstanding results.  Yesenia is our CoolSculpting expert and has attended CoolSculpting University, earning the designation of body contouring expert technician. To date, she has provided more CoolSculpting treatments than almost any other provider in Tucson.

In addition to managing Skinjectable’s Chill Bar, Yesenia provides microneedling with stem cells, Vivace RF microneedling and the exclusive HydraFacial MD treatments.   As a self proclaimed work-a-holic, Yesenia helps manage her own family business  in her “spare” time.  When not working, she enjoys spending time with family and perhaps taking a nap;)  Her attention to detail,  incredible work ethic, ability to make everyone feel at ease and leadership tendency make Yesenia a joy to have on board the Skinjectable’s team!


Sandy Seidel

Medical Esthetician

Skin Care Specialist




Sandy Seidel | Skinjectables Tucson

Sandy Seidel is one of Tucson’s most respected and highly regarded Medical Aestheticians who has been an industry leader for more than 18 years.  Dual certified in lasers and medical grade skin care, Sandy has delivered exceptional treatments to her clients with outstanding, predictable results in some of the regions most prestigious offices.  With over 7 years of providing professional skin care treatments in Tucson’s top cosmetic salon enterprise as well as 9 years in a plastic surgery office, Sandy has gained the expertise to develop treatment protocols and

customized skin care plans for her clients with results that are unrivaled.  In 2015, Sandy opened her own professional skin care treatment practice, Sandy Seidel Aesthetics (located inside Skinjectables), where she continues to provide the most advanced techniques including microdermabrasion, dermaplaning, waxing, LED, oxygen facial therapy, and customized medical grade facials.  To experience one of the best skin care treatments you’ve ever had, call Sandy direct to schedule  520-245-4557 ….your skin will thank you! 


Kerri Rage, LE, CLT

Client Liaison, Skin Care Expert



Kerri brings to Skinjectables almost three decades of experience in the aesthetic industry.  As a certified medical aesthetician and laser technician, Kerri has worked with many of the country’s leading aesthetic experts.  In addition to being vastly knowledgable in all things beauty, Kerri has studied the art of light and shadows and is highly skilled as a certified make-up artist.  Her talent and passion for bringing out the natural beauty in all her clients has



has afforded her the reputation of being an honest, compassionate and invaluable resource for all those seeking to look and feel their absolute best.  As a self proclaimed skin care connoisseur, Kerri is our go-to gal for recommendations on anything we apply to our skin.  At Skinjectables, you will see Kerri doing everything from providing fabulous client service to prescribing customized skin fitness programs- all with a warm, welcoming smile!