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Roy C. Grekin


Director, Dermatologic Surgery and Laser Center

Dr. Roy Grekin directs the Dermatologic Surgery and Laser Center. He cares for patients with a variety of skin disorders, including certain kinds of skin cancer. He is a specialist in Mohs micrographic surgery, a precise technique for removing facial tumors while preserving healthy tissue.

Grekin's extensive experience includes cosmetic dermatology. He uses lasers to treat common disorders such as port-wine stains and other pigmented lesions, facial veins and warts.

Grekin is a member of several professional societies, including the American Medical Association, American College of Mohs Surgery and American Society for Laser Medicine and Surgery.

  • Education

    University of Michigan, 1977

  • Board Certifications

    Dermatology, American Board of Dermatology

  • Academic Title


Where I see patients (1)

    My reviews


    Overall Experience
    883 Ratings
    About our process
    Dec 03, 2023
    Excellent experience
    Nov 30, 2023
    Dr Grekin was Excellent. I am grateful to be his patient. The surgery went well he "got it ALL" first time no need to go back. He takes one look & he knows what he is dealing with. He Is The Best surgeon & he connects so well to his patients !
    Nov 29, 2023
    Explained everything and excellent bedside Manner which put me at ease
    Nov 29, 2023
    Dr Grekin is the best! His skill and care is at the pinnacle.
    Nov 21, 2023
    Nov 17, 2023
    Dr Grekin is very kind and knowledgeable. He has a great sense of humor and makes me feel very comfortable.
    Nov 10, 2023
    Dr. Grekin provides step by step explanations of what he is doing and why and makes one feel very well taken care of. He also does not make one feel he is rushed and thinking about the next patient/problem.
    Nov 09, 2023
    Dr. Is terrific.
    Nov 09, 2023
    I was very impressed
    Nov 02, 2023
    Experience was chaotic. I was not sedated so heard them working on my leg very upsetting. Then it was like an assembly line. The Dr was working on maybe 5 patients at a time and would pop in and out and I was just waiting in the meantime with a 4 inch gash in my leg. Very unsettling and unpleasant.
    Oct 31, 2023
    I could not ask for better care.
    Oct 30, 2023
    Excellent care. Dr. Grekin explained everything and listened to me and my concerns.
    Oct 21, 2023
    Dr Grekin was extremely professional and me with great respect and thoroughly explained all aspects of my treatment. I very much appreciated his skill and care.
    Oct 19, 2023
    This was an excellent experience. The professionals who worked on me made me feel secure.
    Oct 19, 2023
    I actually did not see Dr Grekin; I saw a fellow
    Oct 18, 2023
    Great over all experience.
    Oct 16, 2023
    My procedure required stitches and I wasn't informed when the stitches should be removed
    Oct 12, 2023
    Fabulous office staff
    Oct 12, 2023
    I felt well informed at each step of the process and I felt my questions were always answered fully and clearly.
    Sep 30, 2023
    The lab work on my slides was extremely slow--almost 3 hours for the first slides. Was left to wait in my room with no explanation for the delay (was supposed to be 1 1/2 hrs.
    Sep 28, 2023
    Dr. Grekin team was the best
    Sep 27, 2023
    Mohs department always just wonderful to me. I've sadly had to use their services several times. Doc Grekin-whatta guy!
    Sep 22, 2023
    Dr. Roy Grekin is known as one of the top specialists within the field.
    Sep 21, 2023
    Great doctor
    Sep 13, 2023
    Dr. Grekin is terrific!
    Sep 01, 2023
    Great at giving info to his 'fellow' that I can understand too!
    Aug 31, 2023
    Follow up visit to check Mohs surgery site so nothing in the way of alternatives. Just keep doing what has been recommended
    Aug 31, 2023
    This meeting was a consult so I don't know if I would recommend the provider until I have The actual surgery
    Aug 23, 2023
    The Doctor is a wonderful communicator and explained each step in treatment and recovery.
    Aug 22, 2023
    I had an excellent visit.I love Dr. Grekin. All of the staff were kind polite and helpful!
    Aug 21, 2023
    Dr. Grekin & team were amazing - highly recommned!
    Aug 18, 2023
    Dr Grekin was professional and an obvious clinical expert
    Aug 18, 2023
    Courteous efficient knowledgeable staff
    Aug 18, 2023
    Dr Grekin is an EXCELLENT doctor. I feel privileged to be his patient & refer very often refer my loved ones to him
    Aug 11, 2023
    This unit is exemplary and should serve as a model on how to run a department. On days when I have an appointment I genuinely look forward to seeing the doctors and staff.
    Aug 04, 2023
    Dr Grekin he Best w Fabulous hands & knowledge
    Aug 04, 2023
    He was professional but funny personal Informative and very reassuring.
    Aug 03, 2023
    Dr Grekin was great. Upbeat demonstrative and joyful. That set the tenor of the day. And what made what would be a neutral to negative experience (as any procedure of this sort belies) a very positive event.
    Jul 29, 2023
    I felt completely "taken care of" team was engaging Informative and warm quick and efficient yet always Impressing as focused on the job.
    Jul 29, 2023
    Dr. Grekin is a model doctor. The highest level of talent professionalism effectiveness and ability to communicate with patients His "bed side manner" is also exceptional. Dr. Grekin's fellow was also excellent.
    Jul 28, 2023
    Love love this practice.
    Jul 27, 2023
    Always treated with utmost care & compassion by Dr. Grekin & his entire staff of interns & nurses
    Jul 21, 2023
    Dr. Grekin and his team were outstanding!
    Jul 20, 2023
    My only complaint is the waiting time between excision of the basis cell and the return from the lab. It was hours and should not have been. Oh and the exam/procedure rooms are always very cold. (I've been before).
    Jul 19, 2023
    I had an excellent experience at UCSF. I could not have asked for a more professional team and really nice people.
    Jul 19, 2023
    Grekin is Fabulous !!!!
    Jul 09, 2023
    Excellent care and staff
    Jun 29, 2023
    Dr was very good
    Jun 26, 2023
    Excellent and very professional
    Jun 23, 2023
    I have gone to Dr.Grekin for 20 years for MOHS treatments. He has always done an outstanding job and takes pride in his work. I am grateful to have such a skillful and dedicated doctor.
    Jun 15, 2023
    I really felt well cared for and relaxed. I love Dr Grekin . He was competent fun and seemed to be well liked by his students. Always a good sign.
    Jun 15, 2023
    All good
    Jun 13, 2023
    Everyone was fabulously caring!
    Jun 07, 2023
    Excellent service
    Jun 06, 2023
    Dr. Grekin is excellent.
    Jun 03, 2023
    Dr. Grekin is one of the very best doctors at UCSF. He pleasant professional personable and the best in his field! I wish all doctors at UCSF were as competent as he is.
    May 25, 2023
    Dr Grekin was fantastic
    May 24, 2023
    Dr Grekin is fantastic!
    May 24, 2023
    Dr Grekin must be the best in the business I've could not be more skilled or more caring.
    May 21, 2023
    My experience at UCSF was great. Dr. Grekin was so friendly and personable...My fears were lessened immediately when he came into the room and introduced himself as Roy.Everyone else was the same way.
    May 20, 2023
    Every single one assistants and Drs are very good friendly and professional. I love coming here
    May 17, 2023
    May 17, 2023
    I have great confidence in the talent and support team associated with this practice. From entering to exiting my appointment I was well received and Informed by a very engaged team.
    May 11, 2023
    Because of the late appointment it felt like A very rushed appointmentno real communication. Decisions made decision's acted on and no real understanding on my part!
    May 11, 2023
    Everyone was incredibly kind
    May 05, 2023
    The laser procedure I had performed by Dr. Grekin turned out beautifully. If I had it to do over again Dr. Grekin Would be my first choice. Highly recommend.
    May 04, 2023
    Dr. Grekin is very good but his office is chaotic!
    Apr 27, 2023
    Dr Grekin is phenomenally good at his job and makes every effort to please his patients despite the challenges his patients' conditions present. He's a genius. He's my hero. My scar is not what I'd hoped at this stage but Grekin's work given what he had to start with is miraculous. I'm grateful for his time.
    Apr 26, 2023
    Dr. Grekin gave me his complete attention and answered all of my questions. He is always very thorough explains things so that I understand them and presents the pros and cons of different alternatives. He is extremely knowledgeable compassionate and professional.
    Apr 20, 2023
    Outstanding provider
    Apr 14, 2023
    When I was finished with the blue light treatment I was given a 2 page sheet. What to expect the treatment to be. And what to to as follow up after. Would have been most helpful to mail this to the patient BEFORE the treatment. Makes no sense to give this after treatment. Very simple. Very helpful.
    Apr 13, 2023
    All staff friendly knowledgeable personable and seemed to enjoy their work.
    Apr 08, 2023
    Yes as previously experienced positive and successful
    Mar 30, 2023
    Professional skilled caring. Gave me confidence in his treatment.
    Mar 29, 2023
    Exceptional care from Dr. Grekin. Professional yet friendly manner. Really put me at ease and I felt he set the tone for his whole staff. He did a most surgery for me several years ago with excellent results so I had full confidence in his abilities and combining that with his personable and approachable manner Is extraordinary.
    Mar 28, 2023
    Dr Roy Grekin the BEST - knowledge off the charts & great hands w/needle UCSF lucky to have him!!!
    Mar 25, 2023
    My appointment was with a specific doctor. Resident's knowledge was weak and had to be corrected by doctor but resident did the surgery. I was uncomfortable because doctor left after correcting the resident.
    Mar 24, 2023
    While I worry I may be mistaken I smelled what seemed to be alcohol on the breath of the attending . It might have been mouthwash but it set me back a little. This was not the case the day of my surgery so it was a bit surprising to have this experience the day of my exam.
    Mar 23, 2023
    Dr. Grekin was very good at explaining the procedure to me and kept me updated on how it was going and how soon it would be done.
    Mar 16, 2023
    Very good care but slow and expensive (even including insurance)
    Mar 13, 2023
    Dr. Grekin was great. Kept me informed and moved quickly once results available from step to step. This was very much appreciated as it was a stressful process.
    Mar 09, 2023
    I also had Mohs surgery with Dr. Grekin 20 years ago. I would not have this procedure done with anyone else. I knew I could have confidence that my basal cell carcinoma would be removed in is entirety AND even though I was warned it was invasive I knew his repair of the defect would be done with the highest concern for my safety and esthetics. He is simply the best.
    Mar 08, 2023
    Doctors Interns all very good
    Feb 03, 2023
    Dr. Grekin rocks. The fellows and nurses also tops.
    Feb 03, 2023
    Dr Grekin and the two fellows and the surgeon who did my repair were fabulous
    Feb 02, 2023
    The doctors were excellent. They were friendly respectful to my questions and answered them clearly.
    Jan 28, 2023
    Dr Grekin is very kind skilled and knowledgeable. I trust him to take good care of me.
    Jan 24, 2023
    Professional polite courteous confident knowledgeable responsive respectful service and support.
    Jan 19, 2023
    Happy I was able to be treated by this doctor
    Jan 18, 2023
    Dr. Roy Grekin is an extremely knowledgeable care provider who gives me good confidence in his ability and his judgement for me to make intelligent decisions about my condition. He is also very clear and concise in his explanations which I appreciate.
    Jan 13, 2023
    Dr Grekin is fantastic
    Jan 13, 2023
    Dr Grekin is the best Dermatologist I have seen
    Jan 13, 2023
    Dr. G and the whole staff were very helpful and competent.
    Jan 10, 2023
    Doc Roy Grekin the Best of the BestGreat hands w a meddle or laser !!!!!
    Jan 06, 2023
    Dr. Grekin is superb.
    Dec 29, 2022
    I can't imagine how this could have gone better.
    Dec 28, 2022
    My bandage that was set for the next 24 hours positioned tape that abraded my eyeball which I couldn't tell until after numbing wore off & we were miles away from clinic. We were given eye drops to help with pain but no direction on use.
    Dec 28, 2022
    Roy Grekin is excellent. The best ever!.
    Dec 28, 2022
    All excellent
    Dec 18, 2022
    Dr. Grekin was wonderful. Clearly highly experienced; explained things very well listened well summarized well; I was fairly well informed before I came but he really exceeded my expectations in the way he treated me and explained things. You can also tell he sets a really good tone with the other people in the practice; the residents fellows nurses everyone. You should have a rating higher than "very good" for him and this practice. It was excellent
    Dec 15, 2022
    Care and attention was universally excellent
    Dec 14, 2022
    Very. Grateful for the doctor and care team
    Dec 09, 2022
    Excellent surgeon who did a wonderful job on the surgery he performed.
    Dec 07, 2022
    Dr Grekin knows his stuff and even has a sense of humor that aligns with mine.
    Dec 06, 2022
    Dr Grekin showed empathy and was very thorough with his explanations about what he was doing. Both the cause of my Issues and what he was doing to correct them. He seemed to give me ampleTime to ask questions and didn't seem rushed to get to his next patient.
    Dec 02, 2022
    Honestly really good service all around. The nurses and doctor were extremely nice and helpful with any questions.
    Dec 02, 2022
    I admire and respect the knowledge and acumen of the provider however pre-and post communications from the entire system are lacking
    Nov 29, 2022
    I really like Dr. Grekin.
    Nov 25, 2022
    Excellent staff
    Nov 22, 2022
    Dr. Grekin was extremely professional yet warm and friendly as he explained the risks benefits and alternatives to my upcoming procedure as well as my aftercare instructions. I felt very comfortable during the procedure as he kept me abreast of all of the steps as he was proceeding. I left feeling confident and assured that I received excellent care will most likely have a great outcome.
    Nov 19, 2022
    I would give "Excellent or Outstanding " to care provider in place of "Very Good".
    Nov 18, 2022
    Love Dr. Grekin! Who doesn't? :) he is great very knowledgeable experienced friendly doctor. He always listens to my concerns which is important. In the past I've seen several doctors (dermatologists) I had like 2 mins talking to them and that was it. Unlike Dr. Grekin he listens to my concerns. He cares about skin (face) problem. He always tries to come up with solutions for my skin. Highly recommend him to anyone! Thank you Dr. Grekin for everything you do.
    Nov 18, 2022
    Procedure was aborted because referring doctor's office did not provide sufficient information on the site to be treated.
    Nov 17, 2022
    Excellent experience
    Nov 12, 2022
    UCSF Derm team with Dr. Roy Grekin are amazing in providing quality care. My partner and I felt very much that we were part of the overall process.
    Nov 10, 2022
    Dr Grekin is a genius. The only reason I'd hesitate to recommend him is from fear that he'll become even more in demand and then hard to get appointments with!
    Nov 08, 2022
    Great experience with Dr. Grekin.
    Nov 03, 2022
    I wish he had more clinic time. More appts.
    Nov 03, 2022
    Professionalism put my mind at ease
    Oct 28, 2022
    The entire team was outstanding. Dr Grekin is brilliant personable respectful and a very cool guy.
    Oct 28, 2022
    While it was reassuring to have 3 doctors in the room and I understand that UCSF is a teaching hospital I kinda felt that the docs 'talked shop' too much instead of setting expectations for me on what was going to happen next checking in with me when I was in discomfort.
    Oct 28, 2022
    Did a superb job removing a melanoma from my nose and reconstructing the area so it is almost undetectable.
    Oct 27, 2022
    As said Dr. Grekin and his medical support staff are excellent.
    Oct 26, 2022
    I have known Dr. Grekin for over 20 years and his quality of care was always excellent. He has treated family member many close friends and I have referred many people to the practice. However at this appointment it seemed that Dr. Grekin Was over scheduled. I booked my appointment 3 months in advance and a 2 hour window was blocked. However when I arrived Dr. Grekin was rushing to see other clients. They did not have 2% lidocaine only .5% during the procedure and I felt a lot of pain. I wish the procedure had been rescheduled! I have worked in the health care Industry for over 20 years and this experience has been very traumatic for me. The procedure was rushed and I felt was incomplete with some very inexperienced staff working there. There were experienced staff there and I wish I had them for all of my years of attending the clinic.
    Oct 23, 2022
    I feel I will get good care.
    Oct 13, 2022
    Dr. Grekin is always professional thorough and very caring. He always answers my questions and addresses them very thoroughly.
    Oct 13, 2022
    For knowledge and concern yes. But neither he nor attending mentioned follow up what to watch for any restrictions post treatment.
    Oct 12, 2022
    Dr. Grekin is a benchmark for excellent patient care
    Oct 05, 2022
    Dr Grekin was very helpful regarding an alternative to Mohs for one area on my face that might be preferable to cutting. I appreciate that alternative
    Oct 01, 2022
    I was very comfortable around all the employees it's great to see and feel such a happy Environment you can tell they are really enjoy working with Dr. Grekin and in that facility.
    Sep 30, 2022
    Very pleased with quality of experience
    Sep 29, 2022
    The best
    Sep 29, 2022
    Tendency of doctors to speak about me in the third person -as if I'm not sitting there listening - is slightly disconcerting but I'm getting used to it after the fourth visit.
    Sep 23, 2022
    It's a very friendly place
    Sep 22, 2022
    Too bad one has to go through UCSF to access care provider
    Sep 18, 2022
    Sep 18, 2022
    Dr. Grekin could not have been nicer or more competent
    Sep 14, 2022
    Dr. Grekin is the model practitioner! An outstanding professional an articulate person a physician-surgeon who listens and explains. He is not one to cookie cut; he explains makes certain the patient gets it and has something to say. He Instills more confidence In 2 minutes than so many others take years to relax enough to.
    Sep 09, 2022
    Dr Grekin is the absolute BESTHe makes me feel heard and does what he can to achieve the goal at hand
    Sep 07, 2022
    Thorough followup care instructions were in the after visit summary and printed out for me before I left. I recall discussing specifics of follow up care with one of the nurses not the care provider.
    Sep 03, 2022
    Doctor addressed primary problem but also addressed new infection which was most appreciated by me.
    Sep 02, 2022
    Advise Mohs patients to bring a lunch or snacks.Waiting for test results sometimes takes a long time. Drop by just to let patient know they are still waiting
    Sep 01, 2022
    Doctors were fantastic.
    Sep 01, 2022
    I was so impressed not only by the care I received but by the obvious pride and joy the entire staff of the Dermatology Unit takes in their work. First-class.
    Aug 31, 2022
    I know it's the best doctors but it was so confusing having so many people attend me with no one in charge when I left. Now I am home and I have had to call nurse twice
    Aug 28, 2022
    Dr Grekin was excellent. He was very good with the surgery and just a pleasure to work with.
    Aug 27, 2022
    I do not recommend medical professionals to anyone. It is a personal decision and experience - everyone's expectations and needs are different.
    Aug 25, 2022
    Dr. Grekin is simply wonderful. I really appreciate his manner and the way he hears my concerns.
    Aug 24, 2022
    Very pleased with both the doctors who took time evaluate my health issues.
    Aug 18, 2022
    I would refer people to my physician Dr. Grekin and his team but at the same time would NOT recommend USCF.
    Aug 18, 2022
    I was scheduled for Mohs surgery and it appeared my records had not been reviewed until that day so they decided to take specimens and then wait a week or two to do whatever surgery will be warranted.
    Aug 13, 2022
    Dr. Grekin and his staff are first class!
    Aug 12, 2022
    Dr Grekin the BEST !!!!!!!
    Aug 11, 2022
    Always first class
    Aug 10, 2022
    Dr. Grekin and his staff always provide top quality care
    Aug 05, 2022
    I appreciated the 32gauge needle it minimized the injection pain
    Aug 04, 2022
    My UCSF Medical experience was excellent.
    Aug 03, 2022
    Dr Grekin explained everything about to happen and why and how I should take care of what was next.
    Aug 01, 2022
    Dr. Grekin and team are as good as it gets. The best.
    Jul 29, 2022
    Dr. Grekin and associate doctors and nurses were wonderful
    Jul 28, 2022
    Dr. Grekin talked w/ me before and after surgery for maybe 5 minutes total but a 2nd year fellow did the entire surgery & anesthesia.
    Jul 27, 2022
    Dr Grekin and the derm fellow were wonderful
    Jul 21, 2022
    Unexpected cancellation by provider but rescheduled promptly.
    Jul 19, 2022
    Could not ask for better care
    Jul 16, 2022
    I never give referrals for medical care.
    Jul 12, 2022
    All good especially the resident. .
    Jul 06, 2022
    Love them all
    Jul 04, 2022
    Dr. Grekin is an excellent doctor and described exactly what would be done. He asked if I had any questions before setting up follow up visit
    Jun 13, 2022
    In my opinion if a patient needs dermatology surgery Dr. Grekin and his department is where to be. He is top expert in the field he takes time to explain everything his Fellow and Resident teams who cared for me and my surgery were exceptional they also took time to explain everything and they all make a patient feel comfortable and like family. I have options closer to home but I gladly and gratefully choose to travel to Dr. Grekin and his dermatology surgery department at UCSF.
    Jun 12, 2022
    No complaints whatsoever. A wonderful Dr. Grekin and his team!
    Jun 09, 2022
    I received EXCELLENT treatment all the way.
    Jun 08, 2022
    Staff excelled at all aspects of care during my visit even those not assigned to my case.
    Jun 03, 2022
    I greatly appreciate Dr. Grekin's professional and approachable manner. It is always a pleasure to see him.
    Jun 02, 2022
    The care provider named seemingly did not have enough time to talk with me about my condition and did not even ask me whether I had some questions or concerns. He had his assistant do it for him! But I must confess that his assistant was a great doctor and a very friendly person. I am grateful to him.
    May 24, 2022
    Absolutely love Dr Grekin's great skill with filler and amusing perfect attitude and "chair side" manner!
    May 19, 2022
    Very good
    May 05, 2022
    Dr. Grekin is clear in explaining what he recommends and why. I have complete trust in him.
    Apr 29, 2022
    A really exemplary experience
    Apr 22, 2022
    Dr Grekin and his team are awesome. Very much appreciate having them care for me.
    Apr 15, 2022
    I was extremely well taken care of and included in every change.
    Apr 13, 2022
    The attending was abrasive and condescending. I asked questions about alternative laser treatments and he was dismissive. He did not seem to care about my concerns.
    Mar 31, 2022
    Dr. Grekin is very knowledgeable about my procedure and attends to all my concerns and questions. I trust him!
    Mar 30, 2022
    Dr. Grekin wants to see me every year.
    Mar 29, 2022
    Mar 26, 2022
    Good results
    Mar 17, 2022
    Mar 06, 2022
    I would have appreciated a visit by the provider while the resident was suturing my face to assure me that there was appropriate oversight.
    Mar 02, 2022
    Great care!
    Feb 10, 2022
    The experience was good in that I felt the doctor etc al helped me to make a good choice about future treatment
    Feb 08, 2022
    This doctor is very clear and a great communicator