Nikki Hassell: Aesthetic Physician Associate at Summer Aesthetics

Meet the Summer Aesthetics Team


The expert team at Summer Aesthetics, led by aesthetic specialist and Allergan™ trainer Summer, is passionate about helping patients see the best in themselves. With locations in Lake Oswego, OR, and Ridgefield, WA, their skilled specialists strive to provide natural results for all their clients.

The Summer Aesthetics team takes pride in its extensive training and commitment to personalized care. Through its expertise and dedication, it helps each client enhance their natural beauty while maintaining natural results.

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pa-c, nikki hassell, injector
PA-C

Nikki Hassell

Nikki Hassell, PA-C, is an Aesthetic Physician Associate. She not only specializes in dermal fillers, biostimulators, and neurotoxins, but is also leading the Medical Weight Loss and Wellness Team at Summer Aesthetics.


Nikki grew up on the North Shore of Kauai. 

She then moved to the island of Oahu to attend the University of Hawaii at Manoa. Thereafter, she relocated to the Pacific North West to obtain her Masters in Physician Assistant Studies at Pacific University.  She has been practicing medicine for almost 10 years. 

In the aesthetic medicine field Nikki loves being able to blend her technical skills with an artistic eye, with the goal of helping patients feel beautiful and confident. Although she loves performing all services at Summer Aesthetics, her favorite services include facial balancing, lip filler, and of course medical weight loss.

When she is not in clinic, you can find Nikki working out, spending time with her friends and family, or playing a game of cribbage. Nikki is an adventure lover at heart, always up for a last-minute trip, snowboard getaway, or long hike in the mountains.

Nikki’s Specialties:

  • Facial Balancing with Filler
  • Lip Filler
  • Medical Weight Loss (Semaglutide)
  • Wellness (i.e. NAD+ and Lipo-Mino)
5.0
Based on 163 Reviews
A Aaa
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A Aaa
April 18, 2025

I’ve been getting injected by Nikki for going on 3 years now of course I followed her to Summer Med Spa! She is so understanding of my fear of needles and communicates with me perfectly to achieve the looks I want with the least amount of pain and anxiety possible. She’s also very conscious of my anatomy and does not overfill my lips as to not cause migration. I would recommend Nikki for anybody who is scared to get Botox/filler for the first time or just anybody looking for a new amazing injector💖

Jade Sentker
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Jade Sentker
April 17, 2025

I couldn’t be happier with my experience at Summer, with Nikki as my provider! She’s incredibly sweet and professional, which put me at ease. What I appreciate most is her honesty — she was upfront about the benefits and limitations of the different treatment options I was considering. I trust her with my face, which is really saying something! If you’re looking for an aesthetics provider who is skilled, genuine, and truly cares about helping you look your best, Nikki is that person.

Karissa Nitsche
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Karissa Nitsche
April 12, 2025

I’ve been going to Summer for my med spa needs for 6 years and to say she is the BEST is an understatement. I love her approach on less is more and having a more natural approach on beauty. She will always be honest about what looks good or what is too much. On top of her professionalism I always leave feeling so taken care of by her and her team! I walk in the door and they greet me like I’m their best friend that they haven’t seen in forever!!! Truly such an amazing environment to be in. Don’t think about booking…JUST DO IT!

Alanna Johnson
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Alanna Johnson
April 12, 2025

I cannot recommend Summer Aesthetics enough! This team is amazing and has so much to offer for whatever your personal aesthetic goals are; and the whole team is SO sweet. Nikki has been my injector for years now, she keeps me looking like a better (and younger) version of myself and is always so informative about options and treatment plans that progress with my goals. She is also an absolute joy, makes my day every time I see her!

Kaylie Siwy
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Kaylie Siwy
April 10, 2025

My experience at Summer Aesthetics has been amazing! I cannot thank Maddy enough for how amazing she has made my first time getting Botox feel! She is very knowledgeable and patient everytime I’m there 🙂

Alexi Dahlstrom
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Alexi Dahlstrom
April 10, 2025

Maddy is so knowledgeable and takes the time to listen to your needs! I felt so comfortable in her chair. The new space is gorgeous and so cozy! Very glad I found Summer Aesthetics 🙂

J V
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J V
April 10, 2025

I had facial balancing done by Summer and I couldn’t be happier with the results. From the moment I walked in here team made me feel welcomed, comfortable and cared for. Their new space is beautiful, modern and clean. Summer was very knowledgeable and took the time to really understand my goals and needs. She explained the process of what we had agreed on for my treatment which made me feel so at ease. I wanted as natural and subtle results as possible and she 1000% exceeded my expectations! If you’re thinking about facial balancing or any aesthetic treatment I can’t recommend Summer aesthetic enough! Summer and her team are professional and she herself is a true master of her craft.

Nicole Wanner
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Nicole Wanner
April 9, 2025
Katherine Nissley
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Katherine Nissley
April 5, 2025

I’m thankful to have found Maddy (and the sweet team at Summer Aesthetics in LO). Maddy made sound recommendations and delivered results that truly brought my youthful features back to life, which was my main goal. I’ve never left a med spa appointment feeling so relaxed and content with the results. 🌸💓

Sydney Dougherty
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Sydney Dougherty
April 2, 2025

I have been seeing Summer since before Covid. I believe I started going to her when I was only 16 and I am now almost 23. She is so experienced in her field and has the best personality ever. I have always trusted her and her team with Botox and recently tried out the Skinvive treatment which summer recommended. Her new space is so nice and clean and I felt very welcomed as always! I now live out of state but am sure to pay her a visit anytime I am in town ! It’s important to choose a place you trust when it comes to Botox and injection treatments and this is for sure a place and person I can always trust !!!

Brianna Skogan
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Brianna Skogan
April 2, 2025

I had the best experience with Taryn! She is incredibly professional and knowledgeable, making me feel comfortable from start to finish. The HydraFacial and dermaplane treatment left my skin feeling so smooth and refreshed—I’m glowing! The service was amazing, and I can’t wait to book with her again. Highly recommend!

Dominique Lucia
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Dominique Lucia
March 28, 2025

I’ve been a client of Nikki at Summer Aesthetics for years and highly recommend her. She listens attentively to my concerns and provides personalized treatments that consistently yield natural, beautiful results. Her expertise in facial balancing, combined with her warm personality, makes every visit a pleasure. The entire team at Summer Aesthetics shares this commitment to excellence, contributing to an outstanding overall experience. I can not recommend Nikki and Summer Aesthetics enough!

kendra berning
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kendra berning
March 28, 2025

I cannot say enough amazing things about my Maddy! She took the time to truly understand my skin and found the perfect solution tailored just for me. Not only did she address my immediate concerns, but she also created a thoughtful, long-term plan to keep my skin healthy and glowing. Her expertise, care, and attention to detail are unmatched. She is truly the best, and I highly recommend her to anyone looking for real, lasting results. Thank you for making me feel so confident in my skin!

Kailey Glodt
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Kailey Glodt
March 28, 2025

Summer & her team are truly the best of the best! Always so welcoming & always offering such a fun, but relaxing space. Would recommend them for all aesthetic needs from Botox to facials🤍

Staci Tone
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Staci Tone
March 28, 2025

I had an amazing experience with Emily at Summer Aesthetics for my Moxi treatment! From start to finish, she was professional, knowledgeable, and incredibly kind. She took the time to explain the process, set realistic expectations, and made sure I was comfortable throughout the treatment. My skin already looks brighter and more refreshed, and I can’t wait to see the full results. Emily’s expertise and gentle approach made the entire experience so easy and enjoyable. I highly recommend her to anyone considering any skin treatments—she’s the best!

Adriana Fournier
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Adriana Fournier
March 28, 2025

Taryn, is my go to for all aesthetics! I did 3 Moxi treatments and my skin has never felt more youthful. She did a BB HERic treatment for broken capillaries, I have been fighting for years. I look forward to every time I sit in her room learning and talking about skin care and life. She is a fresh breath of air for the industry. I love this med spa and how everyone is so nice as well as educated on all the new technology. This is an evolving industry and it’s sometimes hard to stay on top of it all, so I appreciate I can trust them to be in the know. Nikki is my go to for all other needs when I comes to medical, she is easy and never pushing me out of my comfort zone. She also makes sure to explain things thoroughly and when I ask about things trending she is very honest about what would be good or bad for me. I can’t wait to see their new location!

Elizabeth Migdal
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Elizabeth Migdal
March 28, 2025

Taryn and Maddy are amazing! I’ve had the pleasure of seeing Taryn for a peel and several MOXI laser sessions, and I couldn’t be happier with the results. My skin looks great, and Taryn also helped me find a retinol product that my skin could tolerate during the winter months. Maddy is my go-to for injectables. She has an incredibly natural, subtle approach that always leaves me looking refreshed vs. frozen. They both take the time to make sure you’re comfortable throughout the process and I truly appreciate that I never feel pressured into any treatments or products. I highly recommend these talented gals!

Victoria Magda
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Victoria Magda
March 26, 2025

I absolutely adore Nikki! From start to finish, my first Botox experience was amazing. Nikki took the time to thoroughly explain everything and answer all of my questions, which made the entire process feel seamless and comfortable. Her attention to detail and care truly made a difference. I’m beyond happy with my results and couldn’t recommend her more highly. If you're looking for someone knowledgeable, professional, and personable, Nikki is the one to see!

Jacki Gemelos
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Jacki Gemelos
March 21, 2025

Emily and Nikki are SO amazing. I followed Nikki from her previous studio because she's always done such a perfect job on my botox. I recently got SkinVive by her as well, which is a lot of needles to your face. She's so patient and made my feel really safe. Emily might be the sweetest human I've ever met. I've never done any lasers to my face and she was FULL of knowledge. I have been raving to my friends about her. She's also so good at what she does. Honestly, the entire office is full of amazing women who do their jobs so well. They go above and beyond the actual service. It's an entire experience and these girls have become friends. I would highly recommend trusting their services! You are all in for a treat. Summer, the owner is amazing as well!

Ashley Shaver
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Ashley Shaver
March 19, 2025

Maddy immediately made me feel comfortable. She was very thorough in her details of how everything would go and answered any questions I had. The results of my visit were exactly what I was hoping for, for a first time patient. If you feel like you haven’t found the best local Aesthetics team, this is them.