Sausalito
Location
13+
Years
Plastic
Specialty
Dr. Jon Birnbaum is a board-certified plastic surgeon practicing in Sausalito, California. He received his medical degree from Tufts University School of Medicine and completed surgery residencies at SUNY Downstate Health Sciences University and the University of Virginia Medical Center. Dr. Birnbaum then completed a fellowship in Plastic Surgery at the University of Virginia, where he received specialized training in reconstructive and aesthetic procedures. He has served patients in the San Francisco Bay Area throughout his career.
Tufts University School of Medicine
Surgery Residency, University of Virginia Medical Center
Plastic Surgery Fellowship, University of Virginia Medical Center
Inside the practice
Dr. Jon Birnbaum
★ 5.0 (5 reviews)
Breast Augmentation
February 27, 2026
Lexi is super knowledgeable and gave me an entire facial care plan! I trust her expert eye, and kind demeanor. Thank you Lexi!
January 23, 2026
Lexi is the best in the business! So sweet and so talented! This office is very friendly and accommodating. I live in SF and drive to Marin to see Lexi and her crew.
December 31, 2025
I had an incredible facial treatment with Sofía, and I couldn’t be happier with the results. From the moment I arrived, she made me feel comfortable, relaxed, and well taken care of. She is extremely professional, knowledgeable, and attentive to detail, explaining each step of the treatment and making sure it was perfectly suited to my skin. The facial itself was relaxing and refreshing, and my skin felt noticeably cleaner, smoother, and more radiant afterward. Sofía’s technique is gentle yet effective, and you can truly tell she is passionate about what she does. I highly recommend Sofía to anyone looking for a high-quality facial treatment and exceptional care. I will definitely be coming back!
December 6, 2025
Lexi is truly the best Botox injector in Marin and Bay Area. She is incredibly thorough, detail-oriented, and always makes me feel completely taken care of. On top of that, she’s such a joy to be around. I trust her fully. The Sieber Plastic Surgery office is spotless, and the entire staff is warm and wonderful. If I could give more stars I would!
July 31, 2025
I honestly can't say enough how happy I am to have found Lexi Sherer for all my aesthetic needs. I have been seeing her for a few years now & trust her wholeheartedly. Her approach is so detail oriented, professional & naturally progressive. Always putting me at ease immediately & going through all aspects of each treatment I have received with her. I have recently been doing the Moxie/BBL laser treatments & after just one saw so many improvements in my skin! Lexi is always up to date on new trends & treatments in her industry. I know that I will always be in good hands with her & she will just make me look like a more enhanced version of myself. Never overdone & always undetectable to the untrained eye, aka my husband. ;) After following her to her new venture with Sieber, I am just so happy for her, it feels like a great team & the offices are pristine while still feeling warm & welcoming! Thank you for everything Lexi!!
Is this your practice?
Claim your profile to respond to reviews, upload photos, and connect with patients.
Claim This Profilearrow_forward