Nena Flack, RN

Nena Flack, RN, Esthetic Nurse SpecialistNena Flack, RN
Esthetic Nurse Specialist

Originally from California, I moved to Hawaii to earn my nursing license in 2016.

Upon returning to California, I settled in San Francisco and worked for a short time at a skilled nursing facility. But, after discovering the wonderful world of aesthetics, I have not looked back!

I have been an aesthetic nurse since 2018 and started developing my injectables experience in 2019. I specialize in Botox, dermal filler, CoolSculpting ELITE, and laser treatments.

I love attending esthetic conferences that keep me up to date on my skills and allow me to learn new things. I always look forward to helping my patients look and feel their best.

In my free time I enjoy hanging out with my family, reading and traveling.


I could not be happier with my Fraxel experience at Hayes Valley Med with Nena. The instant I met her, I was at ease. She is obviously a skilled nurse who can juggle patient concerns, a sweet bed-side manner, and the technology. She moved through the treatment quickly, but was always aware of my comfort and paused to present me with options for easing pain or stress. In fact, because of her skill, I was surprised at how comfortable I was throughout.
Rachel H.

This place has been wonderful I went for Upneeq and lip filler – Nena is a true artist. I have a scar on my lips and she worked around it and made my lips look so natural and back to what I remember! She really listened and didn’t try to upsell me on anything. Front desk was lovely too. Will be back from more!
Ryan H.

Great experience. My injector, Nena was very precise and efficient. Let’s not forget her gentle hand. I barely felt anything!
Niesha T.

I love hayes valley medical esthetics! Everyone is always so kind, thorough, and good at what they do. I totally trust Nena and I appreciate how patient she is with all of my neurotic questions. My lips look great and my self esteem has sky rocketed. Thanks!
Tracy W.



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Kirsten S.
Linda and staff are amazing. I am always very happy with my treatment results. It is apparent that she researches various technologies and techniques. The applications are always evolving with new and improved products. Highly recommended.
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Suzanne P.
Excellent service and an overall pleasant experience. Victoria was professional and knowledgeable. She proposed treatments addressing both my anesthetic and medical concerns.. I could not be happier with the results. Also, the Receptionist, Mattie, was pleasant and efficient. I look forward to future treatments.
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Lisa M.
Hayes Valley is the best! Kate did an incredible job with Dysport removing the wrinkles from my forehead, Sandra gave me great abs and glutes with Emsculpt, and Linda gave me my youthful facial structure back with Sculptra. These women are truly amazing. So glad that I found them!
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Gene V.
I love Hayes Valley Medical and Esthetics! I've been coming for a while now for Botox and filler treatments. Linda is AMAZING! She knows just the right amount of product needed in all the right places to bring out my best facial features. I feel more handsome every time!!

The front desk staff are super sweet and helpful. They always ask exactly what I want and I never feel like I'm being 'upsold' or encouraged to do anything other than what I came in for. I would highly recommend HVME to anybody that is on the unsure about trying some of the services they offer. You won't be disappointed. Thank you!!
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Julie S.
This was my first experience with any filler/injection treatment and it was very pleasant, professional and everyone there made me feel safe, welcome and I felt very knowledgeable coming out of my treatment about what to expect. I will absolutely be back!
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Tina B.
Diana at the front desk is so sweet, the medical assistant was amazing & personable and Kate who did my procedure is my favorite! As I walked out and met my husband, I told him how much I enjoy being there & what a good vibe Hayes has.
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Cher B.
Sheila and Linda took great care of me and I look younger and vibrant.  I do not trust anyone else for injectables.  Linda is careful, thoughtful, and respectful of one’s budget. I have followed her from Marin into SF and I will continue to follow her where ever she practices.
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Emily N.
I highly recommend Hayes Valley Medical & Esthetics!! All the front desk staff are warm, friendly and professional and Denise is the best for laser, she goes above to make you feel comfortable and at ease. Andrea is exceptional at explaining the services they offer. They are the best in SF in my opinion and I do my research!
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Kathleen F.
Excellent customer service, advice, and care. Botox and Microneedling. Melonie is a gem. She is extremely knowledgable, sincere and honest. Everyone here is helpful, They carry a fabulous array of skin products too. I am so pleased with my results!
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