Gerald Heeko Yoon

Gerald Heeko Yoon MD

Specialties:

Urology
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4.7 / 5 (based on 559 Reviews) View 119 Comments

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562.907.7600

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Gerald Yoon MD is a board certified Urologist with fellowship training in endoscopic/laparoscopic techniques for the management of all urologic conditions.  He is also trained and experienced in Robotic-assisted laparoscopy which is increasingly more commonly utilized in cancer and anatomical diseases related to the urinary system and male sexual organs.  Dr. Yoon accepts patients of all ages including children and evaluates patients in all the general areas of urology including urinary stones, urinary incontinence, genito-urinary cancers, prostate-related voiding symptoms, male sexual dysfunction and pediatric urology.   He also routinely performs the No-Scalpel Vasectomy in the office using local anesthesia. 

Dr. Yoon has received the designation of Center of Excellence in UroLift procedures.  This designation comes as a result of extensive UroLift procedures performed with favorable measured patient outcomes while also maintaining on-going continuing medical education activities. 

Dr. Yoon strives to maintain up-to-date training and education in order to keep up with the advances that continue to take place in the specialty of Urology.  He hopes to incorporate these advances in his clinical practice for the benefit of all his patients. 

Office Information

  • Urology Whittier

    14350 Whittier Blvd #100 Whittier, CA 90605

    Main: 562.907.7600
    Fax: 562.907.7602
  • Urology Downey

    11480 Brookshire Ave #204 Downey, CA 90241

    Main: 562.904.4470
    Fax: 562.904.4479

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians

Profile

Gender

Male

Specialties

  • Urology

Additional Languages

  • Korean
  • Spanish

Education

Medical School

University of Virginia School of Medicine (Charlotesville)

Internship

University of Southern California Medical Center (Los Angeles)

Residency

University of Southern California Medical Center (Los Angeles)

Fellowship

Kaiser Foundation Hospital-Los Angeles (California)

Board Certifications

  • Urology

Video

Patient Reviews

April 21, 2026
Having an appointment with Dr. Yoon, the White Coat Syndrome definitely doesn't exist.
April 14, 2026
To me he is Great Doctor and caring. Been going to him for a long time
April 13, 2026
5 Star
April 09, 2026
i feel like he just cant fix problem
April 02, 2026
Please answer the phone when we're trying to make a call to you. All clients, customers, or whatever you may call us. We deserve to have the telephone picked up.
March 31, 2026
Doctor was pleasant and efficient and that sums it up. Thank you.
March 23, 2026
Thank you for always taking care of me and my family.
March 23, 2026
We felt somewhat rushed when we were consulting, but other than that, it was good.
March 23, 2026
Dr. Yoon is the best!
March 17, 2026
Dr. Gerald Yoon is an experienced and knowledgeable physician and I trust him to provide the best care for my health.
March 16, 2026
The information was clear because of the situation it could get worse if they did in operation to remove the extra fluid within my testicles. The only thing that was not explained was our conversation was being recorded. I seen the DJI with the green light on in the v of the doctors shirt. A just to let me know you are being recorded would had been nice. Asking for permission would allow me to say I do or don't mind being recorded? Is this legal or illegal? Well it's illegal in Los Angeles county. The should be informed! Just because I'm old doesn't make me stupid. I'm not a sue you person. But you may have one in the future.
March 16, 2026
Yes, I really enjoyed Dr. Yoon. He's a specialist in urology and it's the first time I saw him. I enjoyed speaking with him because he explained everything to me thoroughly. He listened to me and which it was very important to me, especially what I'm going through. And he seemed to understand everything I was saying and why I was saying it. So I felt very comfortable with him. I felt very safe with him and I felt he would be a good doctor for me. So yes, I am very looking forward to my next meeting with him and see what else he has to offer to help me to feel better. So thank you so much for him, PIH. I think he's a wonderful doctor. I feel very lucky to have him. Thank you.
March 16, 2026
My experience was awesome from the front office staff. Doctor yoon was attentive, listen to all of my concerns and made me Feel at ease when the results came back . I personally was able to speak to him to ask a question as always , very pleasant experience
March 12, 2026
I was treated very well for my first visit and I appreciated the office staff and the physician. However, one office visit is hard to tell how good the office is, so I wouldn't mind getting a call back maybe after the second or third visit and following up then. Thank you.
March 09, 2026
I can't really recommend it because it was my first time. That's all I can say.
March 09, 2026
Dr Yoon was very professional and took the time to answer my questions. He did not appear rushed and ensured all my concerns/questions were addressed. He was very knowledgeable as well and used evidence based references as well as anatomical models during my visit. Very impressed and thank you.
March 05, 2026
Everyone was great, Dr was very kind, staff at the office very nice, but I do have to complain that when I called to schedule my appointment the secretary that answered was rude and not understanding, I had a foley and needed it to be removed asap, she didn't care and wasn't understanding, she said she would call be back to see if I could see a another provider, never got a call. 2 days before my appointment got a text to confirm my appointment!, didn't even know she scheduled one for me, at this point I already had my foley removed, wasn't gonna wait. But other than this one particular person, everyone was awesome!
March 03, 2026
He did a great job.
March 02, 2026
Thank you for the attention from the staff and the doctor; they were very attentive to me.
March 02, 2026
Their attention and explanations, and their very attentive nurses as well.
February 23, 2026
I had difficulty scheduling my follow-up visit after an operation, but once I finally got to see the doctor, I was very, very satisfied with the care I received. But his staff kind of blew it on getting the reservation or getting the appointment taken care of in a timely manner.
February 19, 2026
I was very disappointed that Dr. Yoon did not have the information about why the visit was made and what the visit was for. It was very unclear to the office why the facility sent (PHI removed) to the appointment.
February 19, 2026
Making next appointment ahead of the time seems a bit difficult recently.
February 17, 2026
Dr Gerald Yoon is as professional as they come. He's knowledgeable and makes you feel comfortable and able to talk about anything.
February 17, 2026
Thank you very much Dr. Yoon and staff! I would highly recommend Urolift over pills!
February 13, 2026
Dr. Yoon is very professional, explains everything in very detail. I would like to make a shout out to Nurse (name removed). She was the best. She really took care of me, as well as Dr. Yoon. Shout out to the surgery department and the same day surgery department. They were amazing. Kudos for hiring such nice, professional, patient, and polite people.
February 10, 2026
He told me I had bladder cancer with no proof and kept asking me if I had any questions. I told him I was in shock and didn't even know what to ask. For the next 4 days, 3 times a day I called the office asking him to call me. He never called!!!
February 10, 2026
Dr. Yoon is a true professional. I trust him with my care.
February 05, 2026
I am on an on going treatment program for a tumor on my bladder. So i have regular appointments to monitor this condition. I am satisfied with my situation and the care.
February 03, 2026
I have been a patient of Dr Yoon for quite a few years and he has always been considerate of all my questions and concerns. I appreciated the follow-up calls I received whenever an issue would need further testing, or to share results.
February 03, 2026
Dr. Yoon is a very good Doctor, have been seeing him since he came to this office!
February 02, 2026
Actually, I was in and there, in and out of there quite fast, and I was very impressed with the office, and I did tell that to the attendant, and that's it.
February 02, 2026
I felt like I was talking to a wall, I felt like he wasn't giving me the attention I needed and I felt like he wasn't interested in my case.
January 27, 2026
Provider did not make me feel comfortable. I came in for an evaluation. I felt that he did not want to work with me. Although he provided me with information, it was generic information that I already knew from a previous provider. I also did not like that he did not spend time reviewing my chart before I came in, so he was surprised when I told him I was pregnant and he just did not seem very helpful.
January 26, 2026
Dr. Gerald Yoon is a very knowledgeable and skillful doctor. He performed my total nephrectomy 2 years ago. The surgery was successful, I left the hospital in 24 hours and I was back to my normal life again.
January 26, 2026
Everything is already here, which is an excellent service.
January 26, 2026
I look forward and love to see all my wonderful doctors and great staff. Thank you guys so so so much and all the best for the new year
January 20, 2026
Dr. Yoon is professional, yet is friendly and makes you feel comfortable.
January 20, 2026
The wait was short. The consultation itself took a reasonable amount of time.
January 19, 2026
Gracias,Dr.Yoon & Staff
January 15, 2026
I really appreciate all the doctors and nurses at the PAH hospital and at the clinic that I went to to take out my stent. I really thank you guys for doing everything that you can for me and I appreciate you guys. Thank you.
January 13, 2026
Dr. Yoon is a very polite and nice doctor. Very skilled in his field. And, listed to all my questions. He answered all my questions in a way that I could understand.
January 13, 2026
Dr. Yoon answered all my question and put me at ease about tge up coming procedures!
January 12, 2026
They promised me on the phone to contact Dr. (name removed) office to get my lab report I did on 01/06/2026 needed by Dr. Gerald Yoon, but apparently, they didn't do it.
December 23, 2025
My husband and myself see Dr. Yoon. He's great
December 23, 2025
Doctor's assistants happy and friendly as aways, front office cold, no smile, like they are force to work.
December 22, 2025
How you done? Dr. Yoon did a great job. It's been a year since he did an operation on me. The 31st would be when he took out the folly and the bag off me and told me to pee. And it was the greatest thing of my life. He is the best doctor and I recommend him to anybody. I know some doctors don't like it when you talk to them and appreciate them, but I appreciate him. I thank you for saving who I am and making me go on in life. And I recommend him to anybody. And I thank you for your services and I'm waiting for my next appointment. Thank you.
December 18, 2025
This provider should have taken more opportunity to help us out instead of sending us to the IR, which would be difficult to acquire. He has more connections and he knows the jargon what to use in order to help us to get a valve for my dad. And so I feel that he wasted our time in which we would have to wait and see about getting an appointment so we had to kind of push for help. And so luckily his staff had helped us in a way that he did not. So thankful for the staff that they were able to get things done, but the provider failed. Thank you.
December 11, 2025
Very good you're very nice
December 11, 2025
They are very attentive.
December 09, 2025
Dr. YOON listen to me carefully. I told you about my problems and he came up with the solutions. Dr. YOON helped me a lot.
December 08, 2025
He did a good job. I asked questions about my sickness and he answered me. And he's very worried and he sent me to immediately. So I really like it. I really is a good doctor.
December 01, 2025
Appt was at 2:15p. Didn't see the doctor until an hour+ later. We never discussed any new medications, but when I got home, I had a message from my pharmacy saying that I had two prescriptions ready to be picked up. One was for cephalexin, and the other was for lorazepam. I immediately called the doctors office to question whether or not these prescriptions were meant for me or were placed in error. I was told that I could not speak to the doctor and that somebody would get back to me later. I asked if they would call me and they said yes. I asked if they would call me the same day and they said no. I went onto the portal and sent Doctor Yoon a message, asking him about the prescriptions. The next day I had a message from an LVN, not the doctor, telling me that they were prescribed an error. I view this as a significant error and problem. If this had happened to another patient, perhaps an elderly person, I could see them getting the prescriptions and taking them because they thought they were supposed to. I think your processes need to be reviewed to see how this happened. PIH is definitely not the hospital and medical group it used to be.
November 25, 2025
Very professional and courteous.
November 24, 2025
The staff and Dr. Yoon were extremely professional and I would have given all fours except I didn't listen to the first part of the message. Everything was a definite yes for me. They were great about everything and I would definitely go back and see them and recommend anybody to them. Thank you.
November 20, 2025
my experience was good
November 13, 2025
The doctor is looking after everything; he's professional, and I'm comfortable with his service and professionalism.
November 10, 2025
I would have liked the doctor to explain the procedure he was going to perform to me more, because he said he was going to give me Botox injections in my bladder, but he said the nurse would call me to give me all the information. And honestly, I don't know much about that, I don't understand. It was recommended to me, but I don't know how it works, because I thought it would be done right there in the office. He said no, that I had to be hospitalized and all, but he didn't give me any details about what he was going to do, nor did he tell me how long the procedure would last or anything like that. He just said the nurse would contact me, and that's why I didn't like it much. That's my comment.
November 06, 2025
Horrible care
November 04, 2025
Doctor listened to what I had to say and provided information on my condition.
November 03, 2025
Good service
November 03, 2025
All staff was courteous and professional, especially the nurse attendant for the doctor. Upon completion of the exam, she asked if I would like her to schedule my next appointment with the doctor Yoon? She saved me the time I would have had to stand in line to schedule my next appointment. Dr. Yoon is always kind & concerned, and makes the exam tolerable. Due to his surgical skills, I am still cancer free. Amen!
October 30, 2025
Everything was good. The doctor is very, very intelligent and complete professional. That's it.
October 27, 2025
I just like him good doctor.
October 27, 2025
Dr. Yoon and his staff are very courteous and professional. Could not be any happier.
October 23, 2025
Dr. Yoon was incredibly attentive and made me feel truly heard throughout the visit.
October 23, 2025
Dr Yoon provided answers to all my questions!
October 23, 2025
Dr (name removed) is a truly professional doctor treating her patients with respect for them and their medical needs. Her office staff is respectful and considerate.
October 21, 2025
On this occasion, as on previous visits, the service has been exceptionally good.
October 20, 2025
I got a second opinion about my condition at a much more expensive hospital and they said that I was getting the same treatment that they would have provided.
October 20, 2025
Everyone in this office are very professional.
October 16, 2025
The Doctor I felt did not really ask questions he seemed disinterested and was not personable at all , he listened to what I had to say but seemed not interested he did answer me but didn't give enough information in helping me I believe . I'm sure the other doctors are good I just felt like he was not.
October 14, 2025
I was called in on time. Staff very friendly. Good visit.
October 13, 2025
Good service and friendliness.
October 06, 2025
I tried to make my appt with Dr Yoon on your website and it wouldn't give me one. It booked me with someone else - hot happy about that. I finally called and was able to book an appt with Dr Yoon. Why?
September 29, 2025
Doctor Gerald Yoon answered all of my questions . He was also highly recommended to me by a close friend and they were right! I was very impressed! It was evident that teamwork is ongoing! Everyone was polite, professional and on point! Thank you for the positive end results! Sincerely, (PHI removed)
September 29, 2025
All the staff are very courteous. Keep it up!!!
September 29, 2025
Very professional service
September 22, 2025
Glad to see you are taking time to listen to the patient. Being frank with recommendations and offering options is fantastic. The entire experience was pleasant.
September 19, 2025
The staff is consistently unfriendly. They ALWAYS act like they don't want to be there. I have even been cut off mid sentence while explaining why I was contacting them. That said, (name removed), the surgery scheduler is such a joy and radiates friendliness.
September 18, 2025
DO NOT KEEP ME WAITING IN THE ROOMS FOR SO LONG. ALMOST HALF AN HOUR AFTER MY APPOINTMENT.
September 18, 2025
Dr. Yoon is great. He listened and answered all of my questions. He was not in a rushed manner - took time to discuss at length regarding my situation. Very kind and knowledgeable. ({PHI removed)
September 11, 2025
Hello, my name is (PHI removed). I had a great experience with Dr. Yoon and his staff. Everybody was courteous to you, nice and helpful. Thank you very much. Appreciate it.
September 08, 2025
Excellent interpersonal skills, knowledgeable and pleasant.
September 04, 2025
Very timely check on process. The best that I have experienced.
September 04, 2025
Dr. Yoon is always courteous and friendly. Dr. is usually on time but this appointment was a little late I think it was due to Dr. Yoon training the a new Dr. His office staff is always very helpful they are friendly and courteous.
September 04, 2025
A lot of patience with my autistic son.
September 02, 2025
Well, Dr. (name removed) was the best I've ever had in the group of doctors, and I would recommend anyone to see Dr. (name removed), who is the best there is. I've seen several doctors, but no one has treated me like Dr. (name removed), and congratulations to him and keep going. Thank you.
September 02, 2025
Dr Yoon accommodated me when I needed to see him. I am thankful he was able to remove the stent that was causing strong muscle pain and spasms. Great person
August 26, 2025
weighting time was not long. everything was very good.
August 25, 2025
nothing. I am very happy with Dr. Yoon I continue to see him even though I have moved to another location and changed ALL my doctors to PIH in Orange county. (PHI removed)
August 21, 2025
I'm very happy with the doctor's care. He treated me very well. I definitely recommend everyone to visit him. They are professional and very attentive. The entire staff treated me very well. Thank you very much.
August 07, 2025
Once you're at the office the wait is very long.
August 07, 2025
This was an annual urology follow-up. It is required for me to keep taking the medications he prescribes for me. I think Dr. Yoon seems more caring than he has in the past, although it may be that I am more relaxed.
August 05, 2025
No problems with this office and this Doctor, everything went fine!!
August 04, 2025
As usual, Dr. Yoon was pleasant, efficient, attentive, knowledgeable, and listened to my concerns. And I appreciate it all very much.
August 04, 2025
Everything was very fast, efficient, and Dr. Yoon was amazing. We have only praises for him.
August 01, 2025
Dr. Yoon is the best. I trust his judgement to manage my health.
July 31, 2025
I like the Doctor he listened myself and gives me the best medication. I'm very pleased.
July 22, 2025
Very good office visitSMOOTH SAILING ??
July 21, 2025
The doctor and support staff were great, extremely nice, listened, and were very helpful.
July 14, 2025
thanks.
July 08, 2025
The "checking procedure" went well
July 07, 2025
Dr. G. Yoon is very friendly, very honest and I have been his patient for about 10 years or so.
July 03, 2025
He was very kind, courteous, and thoughtful, and repeated when I didn't understand. Thank you.
July 03, 2025
Keep up the good work.
July 01, 2025
excellent doctor, and listened to my concerns.
July 01, 2025
I trust Dr Yoon and I feel he treats me with respect and courtesy. His staff is also very kind and thoughtful.
July 01, 2025
Dr Yoon, was not patient or kind, walked out of the room. My father has PTSD, hard of hearing and dementia. He could've treated my father better.
June 30, 2025
Excellent visit today, as usual.
June 30, 2025
Dr Gerald Yoon is willing to listen to his patients and answer any and all questions submitted.
June 26, 2025
At the appointment, I wasn't seen by the doctor who knows my case, and I think he was in a hurry. So, John paid close attention to what I had to say. I still didn't leave satisfied, but that's okay.
June 09, 2025
Great service!
June 03, 2025
Was quick and very polite personnel
June 02, 2025
My experience with Dr.Yoon has been very positive. I feel very comfortable during my time with him and look forward to Dr. Yoon providing my continued care.
May 27, 2025
This office is efficient, fast, and wait time is not a long process. The personnel are friendly and the Dr. Is efficient.
May 22, 2025
Everything was great. Scheduling was easy to do.
May 13, 2025
Excellent professional services.
May 12, 2025
It was a good visit and the doctor explained to me everything very clearly and I was very satisfied
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