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Jennifer Hook Varella Barca is a board-certified Physician Associate with over 15 years of experience in plastic and reconstructive surgery. She earned her Bachelor of Arts degree in Biology from Augsburg College in Minneapolis, graduating in the top 2% of her class, and was honored as Biology Student of the Year. She went on to receive her Master of Science in Physician Assistant Studies from the University of North Dakota.
During her training, Jennifer completed a specialized surgical preceptorship with a focus on maxillofacial, craniofacial, hand, plastic, and reconstructive surgery, building a strong foundation in both aesthetic precision and functional restoration. Years of first assisting in meticulous surgical procedures have refined her technical skill, giving her a steady hand, gentle touch, and an exceptional eye for detail.
Jennifer believes her life’s purpose is to nurture others — a calling she has felt since childhood. This innate compassion guides every patient interaction. She is deeply committed to creating a safe, supportive environment where patients feel heard, understood, and empowered to share their goals. As an attentive listener, she recognizes the profound connection between outer appearance and inner confidence, and she approaches each treatment plan with empathy, artistry, and scientific expertise.
Her philosophy centers on helping every patient look and feel like the best version of themselves. She specializes in creating personalized treatment plans that enhance and harmonize natural features, correct imperfections, and restore confidence while maintaining balance and authenticity.
In addition to surgical aesthetics, Jennifer has a strong passion for anti-aging and longevity medicine, incorporating advanced therapies such as hormone replacement therapy and peptide therapy to help patients optimize vitality, health, and long-term wellness.
Jennifer’s dedication to health and discipline extends beyond the clinic. She is a marathon runner, powerlifter, bodybuilder, and Brazilian Jiu-Jitsu world champion. Most importantly, she cherishes her role as a mother and loves spending time with her husband, both on and off the mats.
Known for her warmth, precision, and commitment to excellence, Jennifer combines science, artistry, and compassion to deliver natural, confidence-enhancing results for every patient she serves.
The only surgeon I will ever trust again with a body procedure would be Dr. Sieber! I had a breast augmentation less than a year ago that needed a revision. I wish I had gone to him in the first place but we live and we learn! I’m 1.5 months out from my surgery and couldn’t be happier with the results. He also sculpted my arms at the same time and both procedures turned out more natural and better than I could have imagined. My recovery was also more smooth than what was expected for both procedures. I know that’s because of his rapid recovery technique that includes doing meticulous work and not causing unnecessary trauma to tissue.
I also want to thank his staff for being so kind and supportive throughout the process. Liz, one of the coordinators, is very sweet and helpful and Jennifer, his PA, always answers my questions and is extremely supportive.
After having a poor result from another surgeon in the area and finding Dr. Sieber I am very, very grateful
Everyone at Dr. Sieber’s office made me feel so comfortable and in good hands from start to finish! After my appointment Dr. Sieber texted every day to check on my symptoms and answer any questions. And a special thank you to Jennifer for giving me the best lymphatic drainage massage and thorough advice on how to have an even speedier recovery. Emily was also super helpful and kind throughout the whole process, working with my schedule and just being so kind!
Lexi is phenomenal at cosmetic treatments. I’ve been doing this for more than 20 years and she is the most skilled I have ever experienced. She takes Her time in every visit. Never rushes. She is outstanding. she is an artist. Finally, she is also very candid about products and equipment… Specifically,what they will and won’t do.
Dr. Sieber’s office is the ultimate team. Everyone in the office is involved in your care. After a couple of visits, everyone knows my name and we all say hello even if they aren’t involved in my care on that specific visit. Dr. Sieber is an amazing surgeon who does unparalleled work. I couldn’t be happier with the outcome. And with the pre and post op care from the entire team!
Today I was ID’d for a glass of champagne! The waiter said that it was simply protocol, but then her mouth flew open when she realized that I’m 50. My secret? Dr. Jason Dudas and Armeen Karia. Jason has been instrumental in keeping my hair looking like I’m in my 20’s while Armeen keeps my face wrinkle-free. Both of them are super approachable and can answer your silliest question without making you feel stupid or vain.
If you’re not seeing Lexi, then you’re not getting good Botox. Simple as that. She is the best in the bay, and she will be the only person that ever touches my face.
I had the most amazing and relaxing facial with Priscilla. She is so kind, professional, and very skilled. Thank you so much for such a zen experience! I will be back soon!
I was referred to Lexi by a friend for some help with my aging skin. I had a fantastic experience with Lexi! She is so helpful, knowledgeable, and took the time to listen to my concerns about my skin. She suggested helpful treatment ideas upon my request, and a skincare routine and products that are already making a noticeable difference. I feel much more confident, and my skin will be happier for it!
Great experience with Dr. Sieber. Only one week post op currently but so far so good. I felt very comfortable with him and his staff. They answered all of my questions leading up to surgery and continue to answer all of my questions afterwards as well. Definitely recommend him. My body is looking soooooo good only one week post op. I can’t wait to see the finished product once all the swelling goes down and I’m fully healed.
I came to this office on recommendation from a friend and am so happy I did! I got Botox treatments with Lexi and it was my first time ever getting cosmetic work done. She explained everything in detail and made me feel really comfortable and confident in the treatment we chose. I could tell she really cares about her patients. The results are amazing and I will definitely be going back! Great experience from start to finish!
Had an amazing experience with Armeen. She is knowledgeable about what procedures to use on my face. My injections were almost painless and I had no bruising from multiple pokes! Don’t wait-book an appointment. Plus the office is gorgeous.
I just had the most incredible facial experience at Dave Sieber office. The space itself is stunning and the atmosphere was so relaxing:) My esthetician Priscilla was incredibly knowledgeable. Her personalized treatment left my skin feeling absolutely amazing! I’ve already had a few comments on my glowing skin this week:) My skin feels like the best version of itself. Priscilla has a magic touch!