I am so pleased with Dr. Li and Peggy who are always ready and willing to help me with my questions, concerns, and most important, my appointments. The care is amazing and genuine. I thank them so much for the wonderful care they provided me and will provide me as I will continue to see him as scheduled. You won't find a better doctor to take care of you and tell you like it is. I appreciate the honesty and suggestions to keep me in good health. THANK YOU :) read more

I was only trying to make an appointment but this person Peggy or Piggie started an aggressive conversation and attacked me personally and was super unprofessional. She did not let me even schedule an appointment and hung up the call. read more

Mark W Li, M.D. - Peggy/Piggie ( she's a rude pig ) - Doctors Near Me - Hacienda Heights, California

I thought Dr. Li was thorough, professional and sincere in his diagnosis and treatment, he explained clearly to me the results of my colonoscopy and endoscopy. Peggy was great with the paperwork and very helpful in organizing it for me, overall it was a good experience. read more

Dr. Li is very accommodating. He takes time answering all my questions. Peggy the receptionist is very helpful as well, very responsive to all my queries. read more

Peggy needs to be more professional they should put her in a place where she don't need to speak to patients or there family! Rude Rude!! read more

I've been a patient of Dr. Mark Li for about 8+ years. He largely did colocoscopy for his practice; I'm not sure what else he does, so his schedule at a diagnostic facility might be pretty hectic, which could explain why his office isn't always open. Having said that, Peggy, the office nurse, is definitely overworked and understaffed for performing the same job for so long. Now, as for Dr. Li's work, while performing a post-review of colocoscopy, he is quite meticulous and thorough; he explains every tiny aspect so you have a full grasp of the medical issue one is experiencing. I only wish Dr. Li would be around to deliver the same great services. read more

I have been a patient of Dr. Li's for a few years now and I am go grateful that he is my doctor. He is thorough, answers my questions and tells you the way it is. If there is something I need to know, I respect the fact that he does not beat around the bush and gets to the point. My treatment options are based on our discussions about how to handle things. I love the office staff and can't say enough good things about Dr. Li and thank him so much for his genuine caring. read more

The worst experience ever ! Very unprofessional especially when talking to the receptionist. So my parent have miss an appointment so I made an call to reschedule since she does not speak English. Upon picking up the call, she already give a bad attitude and she said it's too late for reschedule, there's nothing I can do about it and also there's fee. It was unheard of ! There's a fee for reschedule ?! I know this place is bad when I check out the review, oh boy it's true. I would not recommend anyone to come to this place. Also, waiting can be long as an hour and half but its more like three hour long. read more

Mark Li is a very busy man. The first appt I had with him he decided to take a call and talk while I was in the room. He didn't even apologize. He did a colonoscopy on me but he showed up on time. I felt no pain afterward. I got sick from the colon prep drink. He was very nice and even gave me pictures after of the results. His front office assistant is very rude though when she answers the calls. Maybe she needs a break. He took the time after to go over the results with me. He's just overworked. He still cares about his patients. read more

Been a patient for a while now, and did a colonoscopy with Dr. Li. For this regular appointments, your appt time is just a suggested time of arrival. Not a guaranteed time you will see the doctor. You still need to sign in and wait for your turn according to the order of the sign in sheet. My average time of waiting is anywhere from 45mins to 1.5 hours after my appt time and that is when I even arrive early. Not a fan of the system, but it is what it is. Make sure you leave ample time in the day for the appt. As for the colonoscopy, it was easy. Drinking the laxative was alright. Just mix it with gatorade or apple juice. I did a 1:1 mix, and finished the gallon in a couple hours. I got to the surgery center on time and was discharged within 4 hours. Not as bad as what people say on this page. The lady who does the appt is not the best at customer service. She sounds like she doesn't want to be there. But as long as she gets my appt time right, I can care less. I'm here for the doctor, not for her. read more

Peggy, the worst receptionist! she is rude and made me hold a a long time.. ended not even made an appointment with them!

Most frequently used quote at the clinic "Dr Mark Li is too busy to talk to you on this. He will call you if he wants to call you. This is a waste of his time." The two employees at the front desk are extremely rude and unprofessional. After the visit, the employees will change the terms stated on the paperwork to turn the situation in their favor regardless of the terms stated on the paper provided to the patient. So becareful on this! Dr. Li has a tendency to be late to the apointment. During my last visit, I waited 1.5hrs for Dr. Li and Dr. Li spent 5mins seeing me. While waiting for my appointment, I heard the front desk employees yelling at 3 different patients on the phone and mocking the patients' situation offline (lack of patient confidentiality). I recommend to avoid this doctor. read more

Came in here for the first time after I was referred by my primary physician for additional evaluation of my symptoms. The office is nice, location easy to find with good amount of parking. The wait time, horrible. I waited for almost two hours to be seen. I had a 5pm appointment and was not seen until 630-640pm. Dr. Li, once he came in, he was nice, he didn't introduce himself, discussed my symptoms but was a rushed. I was the last patient. He told me what I needed to do and then told his assistant or office manager/nurse follow up instructions with me. He seemed in a hurry to leave, I get it, I want to go too but not my fault, I am last. anyway, he did address my symptoms and seems like a good, knowledgeable doctor and took the appropriate measures to follow up. I am knocking off the two star because of the wait time and the rushed appointment after waiting that long. read more

I looked at the reviews on this site and they were very helpful as I have a referral from my Dr. After reading the reviews I decided to call with an open mind and would then decide for myself if I would make an appointment. A girl named Nicole answered and honestly she was so pleasant and I told her I had read reviews so I knew to come prepared for a long wait. I have had Dr. in the past that ws over scheduled but very good Dr. I just come with starbucks and a good book. I think that sometimes our experiences have everything to do with our attitudes and not that waiting for two hours is fun but it doesn't have to make us so angry. I went in with a open attitude and my experience with booking an Appt was Delightful! Before you let these reviews scare you off please call office and find out for yourself. I will review again after my Appt. Which BTW I couldn't get for over a month ( I will be patient ) Thank You Nicole for making Appointment setting fun! read more

I had a colonoscopy scheduled with Dr. Li on a Tuesday. Per the doctor's orders, I had to stick to apple juice, non colored gelatin, Liquids, basically drinking a liquid that made me go to the bathroom every 40 minutes. It was awful but I had to prepare for my procedure from Sunday 7pm to Tuesday 1:30pm. On Tuesday, I went to the office at my appointment time but the Dr. was not there yet. I waited 3 HOURS for the doctor, with 1.5 HOURS spent with an IV in my arm. The nurses said he would not respond to phone calls and when he did he said he'd be there in 30 minutes. Obviously a lie. I left after 3 hours as both my husband and I took the day off from work since they suggested I have someone drive me to and from the appt. IN SHORT: Dr. Li made me endure colonoscopy preparation for 2 days, was 3 HOURS late, and wasted my time. I do not trust him as a doctor and am scarred as to not want a colonoscopy now. read more

This place deserves 0 stars. I was seriously iffy about this place due to all the bad reviews but decided let me give it a try, everyone has different experiences. I honestly shouldn't have even wasted my time. I got referred to this place from my doctor for OBGYN care since my new doctors office doesn't do that. The referral was put in and I call a week later and confirm I can call and schedule an apt. So I call on Friday 10/07/22 and a lady with a heavy accent answers, I tell her I would like to schedule an apt im a new patient and was referred for OBGYN care. She immediately goes can you call back Monday we are at lunch. I go on Monday? Can't I just call once lunch is over? She goes no and starts mumbling and I couldn't understand her. I said I'm sorry Can you repeat that. She goes call Monday and disconnects. I call back an hour later and the same woman answers I go I called an hour ago and was told I need to call Monday for some reason to be able to schedule an apt. I was referred by my doctor for OB care. She whispers on the phone no new apt till December. I go what you're saying is I can't get an appointment till December? She goes yes. I go let me speak with someone else please, i felt like she was lying just to get me off the phone. She goes everyone is busy. I go it's okay I can wait on hold. So she puts me on hold for about 5 minutes and another lady gets on the line with an accent but not as bad as the previous rep. So I explain again why I'm calling and she goes oh okay how far along are you I tell her 10 weeks and she proceeds to schedule me an apt for 2 weeks from today. I tell her the previous rep told me I can't get an apt until December, she goes oh I'm sorry It's because she doesn't understand and didn't know you were pregnant. I ask what was her name because I don't want to speak with her again she pauses and said ummmm a few times before telling me her name is Annie. I don't know if that's her real name but she is seriously not helpful whatsoever. Not even looking forward to coming here. Debating on just changing doctors with my insurance so I don't have to waste my time coming here and dealing with someone like that. read more

I was referred to this office by my primary care physician and I just called to make an appointment, but once the receptionist found out that I don't have insurance and would be paying cash, her attitude totally changed, and her voice tone became rude and condescending when she told me that they don't take cash patients. Even when I get insurance in the future, I WILL NEVER GO TO THIS DOCTOR BASED ON HIS TERRIBLY RUDE STAFF. read more

Expect at least 2 hours wait. Took my mom here for a check up. Doctor did not show up until 11 am ( 2 hours late from the first appointment). Other patients in the lobby also mentioned this doctor has never been on time. Can you trust a doctor who's never on time to his appointments? read more

Today was my first encounter with my family members primary providers office of Dr. Li. My mother called over the phone with a question regarding my family members health. The nurse Nichol or Nicole was completely unprofessional. Which honestly after reading the these YELP reviews I'm now not surprised. I understand some offices are busy and have large patient caseloads, however that doesn't excuse her rudeness and lack of customer service in regards to patient care. In all my years of customer service I've never heard so many "I don't knows" in one phone call. A simple statement of at least reassuring that she would look into it would have sufficed. Instead Nicoles negative attitude continued and progressed, she did all but practically hang up on my mother. This nurse lacks patience and professionalism. If a patient or family member is calling with a question it's a nurses job to help educate them not demean or dismiss them. In nursing school a large part is "patient and family teaching" obviously this nurse mentally checked out during this lesson. read more

Well, I was not greeted what's so ever! The women at the front counted had no PR skills. The assistant that walked us back was dressed in flip flops, t shirt and jeans... Not professional. I seriously thought someone brought their child to work with them. Haven't met the Dr. Yet... I hope he's 100% different from what I have experienced this far. My option, first impression is everything. Let's see how's this ends... read more

I visited this office yesterday for the first time. Front office staff Peggy and Nichole were nice and very helpful. Dr. Li was great as well. Wait time is a little long but worth the caring and kindness you receive from Dr. Li. Don't listen to the reviews go for yourself and see glad i did. Dr. Li is busy but a great doctor. read more

This review is only for the doctor. I have been a patient of dr Li for 15 yrs. Whenever he is on vacation or when he is fully booked during the time I need to see him, I have to look for a different doctor and I have been through things where doctor only cares about money or have little knowledge about what they are doing. Dr Li is very caring and he does have good knowledge in other areas although his expertise is GI/bowel. He is one of the few doctors that treat patient from the heart and I highly recommend him when you need a doctor. Unfortunately, Now, I think he only accepts new patient related to GI or else you cannot see him. read more

Its my first time here..ive been waiting for more then 2 hrs.regular patients are asking am i gonna be out of here in less thn 4 hrs....omg like really why over book your patients its not very professional.oh and the front office girl nicole she has the most horrible attitude and gets her patients confused.i dont recomend this dr at all read more

Hi All had a colonoscopy .. i assume he did well, i was asleep scheduled a follow up visit doc did not show up ... the ladies in the front office were very dismissive when i expressed my concerns / displeasure .. so that was enough to make me find another dr .... read more

Don't go to this doctor, the waiting time is insane. If you not gonna be here at 8:30 why would you let your staff set an appointment at 8:30. The appointment is 8:30 bitch ass show up at 10. I know your time is valuable but also is mind. read more

This was the 1st time I came to this doctor only because I was referred there by my primary care physician. I had my appointment made a few weeks ago. When I got there, they let me waited for 2.5 hours!! I found out that they have scheduled another 7 patients at the exact same time as me! So after completing my 1st visit, now I need to make another appointment till 3 weeks later!. Their scheduling system is horrible, or maybe the person who is in charge of scheduling? That is totally unacceptable. I went there during my lunch break because realized they told me that initial consultation would be really short. Now I had to call in my work and take the rest of the day off. This is ridiculous! If there is any other choice, I would never come back to this place again. read more

I have been seeing Dr Mark Li over five years. Front office Peggy is always nice and helpful. Dr Li is always caring for his patients, checking with patient how everything going recently as he first walk in during all of my past visits. I especially appreciate his kindness during my last tough pregnancy with risky factors, even though he is my GI doctor, not OB doctor, he came to visit me almost every day during my hospital stay to make sure my condition. He is the real doctor who treats his patients with true heart. read more

After I talked to Nicole - the girl at front desk, I decide to change the Dr. She is rude when I talked to her, then I read the reviews, all complains Dr. is never on time, patients have to wait over 2 hrs at schedule appointment time. That's ridiculous! I call my insurance and change DR. right away. I don't even want to meet DR. LI at all. read more

my self and my wife were referred to this office by our primary care physician, The appointment was at 12 noon, he saw us at 2:15 PM the office is too small and crowded we had to wait outside in the parking lot. But this is not the major problem, December 1 he performed a procedure on us at Wittier Hospital and were told to call the office in few days to get the result. few days passed by, I called, one of the staff said there was something in my results but I can't discuss it with you, you have to make an appointment to see the doctor, but we don't have any available opening anytime soon. I asked to talk to the doctor(may be he would some good news till I see him), she said I will lit him know. long story short, over 2 month after the procedure, I was not able to get an appointment nor the doctor called, when I called back insisting to talk to the doctor, the staff hanged up on me. In brief stay away from this doctor. read more