The Maas Clinic

2400 Clay Street, San Francisco, California

The Maas Clinic

2400 Clay Street, San Francisco, California
Phone: (415) 842-2860
Phone: (415) 842-2860

Doctors

Corey S. Maas, MD
Board Certified Facial Plastic Surgeon

Dr. Corey S. Maas, MD, is a leading facial plastic surgeon with 30 years of experience. Both of his offices in San Francisco, the Maas Clinic and the Appearance Care Center, offer various the very best in facial cosmetic surgery including facelift, rhinoplasty, eyelid surgery, hair transplant and minimally invasive treatments and services such as cosmetic injections and energy based skin tightening, lifting and body shaping devices all done with caring compassion and expert attention to detail. Dr. Maas graduated with honors from the University of Florida College of Medicine in Gainesville. He completed a head and neck surgery residency at the St. Louis University College of Medicine in Missouri. Then, he continued his specialty training with a fellowship in facial plastic and reconstructive surgery at the University of California, San Francisco. There, he earned a full-time faculty appointment, serving as Chief of the Division of Facial Plastic and Reconstructive Surgery for more than 11 years. Dr. Maas is board certified by the American Board of Facial Plastic and Reconstructive Surgery as well as the American Board of Otolaryngology – Head & Neck Surgery. He has been honored with numerous awards for his groundbreaking clinical research, including the prestigious Sir Harold Delf Gilles Award from the American Academy of Facial Plastic and Reconstructive Surgery (AAFPRS). He has published more than 100 book chapters and articles, and he’s regularly recruited to lecture to medical societies around the world. In addition to private practice, Dr. Maas works as an associate clinical professor in the Department of Otolaryngology – Head & Neck Surgery, Division of Facial Plastic Surgery at the University of California, San Francisco. A member of the AAFPRS Faces of Honor Program, Dr. Maas believes in the value of community service. Through this initiative, he offers pro bono cosmetic surgical care to eligible veterans and active duty members who have sustained face, head, or neck injuries while serving in the United States Armed Forces. Dr. Maas has also performed pro bono consultations and surgery for victims of domestic violence through Face to Face: The National Domestic Violence Project. He is proud to have founded the highly successful “Beauty for Books” project, which collects more than one thousand books annually for financially challenged schools and children in San Francisco, Marin, and Truckee.


Staff


Filter reviews, photos, and Q&A by procedure

24 The Maas Clinic Reviews

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Considerate680730November 15, 2022
Injections were perfect - no bruises and very natural looking

Everything about my experience with Dr Maas qualifies for the 5star rating. The office is comfortable, the staff are professional and Dr Maas is an expert in the field. The Botox injections were perfect - no bruises and very natural looking. As an incentive for posting a review, this reviewer received an entry into RealSelf’s monthly $500 gift card giveaway.

rhiantoinetteApril 19, 2022
Getting DeepFX for Deep Acne Scars (30F)

I feel like I tried everything under the sun to try and resolve my long-standing acne scars. I’ve done the e matrix laser, aggressive pixel lasering, and I’ve done a bunch of clear and brilliant. Since meeting Dr Maas, I realize that Deep and Active is the way to go. During the procedure he marks individual scars he wants to focus on and uses the laser to pull down the shoulders of bat...

derme2000August 15, 2021
The BEST

1997 is the first time I had a procedure done by Dr. Maas. As an esthetician and RN, it doesn't get any better than Dr. Maas. He has maintained his integrity, treats every visit like the first time, he has an integrity and code that has not lessened or weakened. He is a superstar in his field and a dedicated researcher.

thekimadamsJune 10, 2020
An Excellent Skilled and Compassionate Dr.

Dr Maas is one of the most compassionate and skilled cosmetic surgeons I’ve ever been to. His attention to detail and natural aesthetic combined with decades of experience helps address any concerns. I couldn’t help but read the negative reviews m, and after carefully reading these patients on other websites have posted other cosmetic procedures not done by Dt. Maas and their unhappiness. Thi...

barbcaliDecember 20, 2019
The Most Phenomenal Surgeon

I am a mega fan of Dr. Cory Mass! He’s been my aesthetic doctor for over a decade, and just recently I had upper and lower eye lid surgery. The outcome is phenomenal ~ I am overwhelmed with happiness about my results! In my mind, there is no more capable or skillful doctor, he exceeds my expectations EVERY TIME- He is a master at his craft, bringing out natural beauty through clinical and s...


85 Before & After Photos


132 Q&A

Q: 42 F, not overweight, do I need a facelift to fix this chin situation? (Photos)
Answered by Dr. MaasApril 22, 2024

A: There are several options available to you at age 42 that may be considered, all FDA approved. Sofwav, Utherapy, maybe Kybella or Coolsculpting and even loliposuction under the chin (submental lipo) could work but on your photos, it looks more like a predominate skin problem (not fat). You need to see a surgeon to give you all of your options, show what each might provide, so that you can make an informed decision.

Q: Should I let my surgeon shave down my knuckled cartilage? (Photos)
Answered by Dr. MaasMarch 4, 2024

A: In your case their may be problem but generally the healing and changes are not over until one year. I suggest you to be forthright about the appearance of your nose relative to the features you wanted. Tell the surgeon how you feel. Your surgeon has recorded your desired appearance in your chart and/or with photo morphing (changing your nose to on the computer). In my experience (over 3000 nose surgeries) about 1/3 of those revision rhinoplasties. When they come to me right after surgery, patients are frustrated if 1) the desired result was not achieved as recorded before the surgery, there is an undesirable result with bumps or asymmetries AND 3) the surgeon disagrees with the patient on the outcome. Have the surgeon show you before the before and after results or read the goals to you. If your surgeon agrees and asks you to wait and reassures you that they will do their best to achieve a result AND you trust the your surgeon, then you should listen and wait. If your surgeon is unable “to see” your concern or tells you it is what you wanted and it is clearly not a desirable result, you would be justified in seeking a second opinion. Remember, this will cost you more money, and only your surgeon has seen and understands your anatomy…still you have to trust your surgeon if a revision is being considered.

Q: Rhinoplasty - what would you do to improve my nose? (Photos)
Answered by Dr. MaasJanuary 12, 2024

A: From the limited views you have provided, top refinement including improving a hanging infratip lobule and refining the tip would be helpful. You might consider updating your submission with a lateral view.

Q: Saline flush for small bump of superficial filler on lower lip? (Photos)
Answered by Dr. MaasJanuary 12, 2024

A: He simplest and most reliable way to fix this is to have a good surgeon use a drop of local then a moderate sized needle to poke and express the excess material.

Q: What to do now with lips? (Photo)
Answered by Dr. MaasJanuary 12, 2024

A: Unfortunately there is not a simple answer to your question. It will depend on how many times treated, presence or absence of scar tissue, and which filler was used…the last being most important. Depending upon what was used and where, most patients will be able to get this resolved without surgery. Based on your lip anatomy, a lip lift would be a much better and more suitable long term option after the visible filler and/or scar tissue is managed. is