Kristen Ash, FNP-C, FNP-BC – Phoenix Clinician

Nurse Practitioner

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Professional Introduction

Kristen Ash, FNP-C, FNP-BC, is a dedicated Nurse Practitioner at Scottsdale Weight Loss Center, where she is passionate about helping patients build sustainable habits and achieve long-term weight management success. She approaches care with warmth, collaboration, and evidence-based guidance, empowering each patient to feel confident, supported, and capable at every step of their journey.

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Education and Training

Kristen earned her Master of Science in Nursing and Family Nurse Practitioner certification following a broad and diverse career as a registered nurse. Her RN background includes critical care, pediatric CVICU, and leadership positions in both endoscopy and interventional radiology/cath lab. She holds her national board certification as an FNP and maintains licensure in the state of Arizona.

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Clinical Experience

Before joining Scottsdale Weight Loss Center, Kristen practiced in primary care, diagnosing and managing a wide range of chronic and acute conditions including hypertension, obesity, diabetes, coronary artery disease, and more. Her clinical interests include obesity medicine, nutrition, and lifestyle-based approaches to improving overall health. With years of hands-on experience across multiple specialties, she brings a comprehensive and compassionate perspective to weight-focused care.

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Philosophy of Care

Kristen believes in meeting patients exactly where they are and helping them create practical, achievable steps toward better health. She values open communication, individualized treatment plans, and a supportive partnership that honors each patient’s unique goals. Her motivation comes from seeing patients regain confidence, energy, and a sense of control over their well-being—core values that align with the mission of Scottsdale Weight Loss Center.

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Personal Interests

Outside of work, Kristen is a mom to a little girl and enjoys staying active through functional fitness and hiking. She loves reading, spending time with friends, and attending concerts, especially anything involving her not-so-secret obsession with Justin Timberlake and *NSYNC. She brings the same positivity, enthusiasm, and authenticity from her personal life into the care she provides every day.

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Gina

Lost 44.5 lbs

"I had no trouble adhering to the meals and they really helped catapult my progress! The classes were so beneficial to me because they helped change my thinking about how I viewed health, nutrition, and fitness.

I will always have my relationship with Scottsdale Weight Loss Center. They truly helped me change my life forever." Read More

Lauren

Lost 60 lbs

"Dr. Ziltzer and everyone who I have come in contact with at the Scottsdale Weight Loss office have been so encouraging and I look forward to seeing them each week. It is now a year and 2 months later since I started. I am down 60 lbs., which is the average amount a 9-year-old weighs, it is crazy to think I lost a whole person! I feel amazing, I hit my goal weight in November 2021 just before Thanksgiving. Nothing on my body hurts anymore..." Read More

Chuck

Lost 66 lbs

"The best thing I did was call the Scottsdale Weight Loss Center. I have a lot more energy, I'm not hungry, and it feels great.

You can take it from me that this is a program that produces results. The staff is always positive, supportive, and never judgmental.

Your visits always result in positive reinforcement, no matter if you had a good week or a bad week." Read More

Emily

Lost 61 lbs

"Here I am at the lowest I have been since high school weighing in at 155lbs. I have lost 61.5lbs, 48.5lb of body fat gone, BMI of 39 when I started, to 27.9, and of course at body fat % of 47.1 to 34.6%. I told myself by my 30th birthday I wanted to be confident in the way I look and I owe it all to SWLC. The entire staff is so welcoming and they are rooting for you just as much as you are rooting for yourself..." Read More