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Dr. Mark Shiu, DO

Dr. Mark Shiu, DO

Family Medicine*

Dr. Mark Shiu, DO is a family medicine physician in Rancho Cucamonga, CA. He is affiliated with medical facilities Arrowhead Regional Medical Center and San Antonio Regional Hospital. He is accepting new patients and telehealth appointments.

4.2 Star Rating
Based on 30 reviews 4.2 Star Rating (30 reviews)

Practice

7974 Haven Ave Ste 250 Rancho Cucamonga, CA 91730
Telehealth available

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Dr. Shiu's Reviews

Likelihood to recommend Dr. Shiu

4.2
30 ratings, 13 with a written review
5 star
73%
73%
4 star
7%
7%
3 star
3%
3%
2 star
0%
0%
1 star
17%
17%

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Do not care about you.
They are all about money because they don’t seem to actually care about you health. This place sucks and I’ll have to contact my insurance to get a new primary but honestly I don’t want to pay this place a dime
What went well
  • Appointment scheduling
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
Mar 08, 2025
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Lack of Caring, Rude Staff
I have been a patient of Dr. Shiu for many years. However, due to the way I've been treated on my recent visits over the past two and a half years, I am now looking for another doctor. His staff is not only rude, condescending and abrupt, they display a "couldn't care less" attitude, both in person and on over the phone. This is unfortunate, as Dr. Shiu used to be a professional and caring doctor. During my last visit, I waited well over an hour in the waiting room, and an additional 30-40 minutes in the room waiting. When he did come in, he spent less than 2-3 minutes with me, didn't inquire further about the symptoms I described to the medical assistant and wanted to discuss with Dr. Shiu and just went and wrote orders for tests without actually listening to the symptoms I was trying to describe. I can no longer count the number of times where I have been left with a rapid pulse, chest pains and practically in tears because of how stressed his office makes me.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Appointment was rushed
  • Long wait times
5 others found this helpful
Helpful
A Disappointed Patient – May 11, 2022
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I have had Dr Shiu for close to 13 years and when I was referred to him by another Dr because my insurance had changed I was so scared and unsure. Needless to say I truly love him as my Dr. he has seen me through 5 major surgeries and countless health issues that has affected my life. When I felt like my life was pretty much over and there was not a great way through what I was facing he talked and walked me through the rough patches. I have never had a Dr that personally cares for his Patients on such a high level. When you call after hours he returns your call. I could go on and on but if you are looking for a Dr I can tell you that he is AMAZING. And I feel Blessed to have him over the care of my life. Thank You Dr Shui. Pennie Weaver
What went well
No results
What could be improved
No results
2 others found this helpful
Helpful
Pennie Weaver – Feb 29, 2020
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I find him to be professional, timely, knowledgeable and approachable. He saved my life by going beyond in his medical services to me. Without him I would be dead. I am not exaggerating. Owe my life to him. In addition all my family goes to Dr. Shui. He is the finest doctor and on e of the best human beings I know. Richard Roth Richard Roth
What went well
No results
What could be improved
No results
2 others found this helpful
Helpful
May 10, 2019
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I have been a patient since 2016, Dr. Shiu is one of the most compassionate doctors I have experienced in a long time. Although he has many of patients he takes the time to review healthcare information and verifies that you understand it and more than willing to answer any questions or concerns you may have . He has a very good memory and he recalls different issues that I have pointed out to him in regards to my health. He has been nothing but professional Maintaining a very caring approach. Office is neat and clean with excellent staff. ??????????
What went well
No results
What could be improved
No results
3 others found this helpful
Helpful
May 07, 2019
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Dr. Shiu saved my life and I will never forget his skill and care. After saving my life he has continued to provide informed and extensive care for me and my extended family. I cannot say enough positive things about Dr. Shiu. I thank him for saving my life! God Bless Dr. Shiu Richard Roth
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
richard roth in Rancho Cucamonga, Calif. – May 16, 2018
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I really liked Dr Shiu, he listened when many doctors had not over the years. I have left California, temporarily, and have not seen him in the last couple months. I would love to give him 5 stars, however, I felt with one of my last visits, I did not feel as listened to but hope to see him again when I return, have some great updates to tell him about!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
2 others found this helpful
Helpful
Sherri in South Carolina – Jan 06, 2018
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Dr. Shui is an awesome person. He genuinely cares about his patients and takes time to answer all questions during a visit. He is friendly and professional.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Mrs. Parra in Rancho Cucamonga – Apr 05, 2017
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Very caring. Spends the time n cessary find the problem
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Lake Elsinore, CA – Oct 27, 2016
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Great Doctor! Will take the time to listen to his patents and connect with them on a personal level.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Matt in San Bernardino, CA – Sep 13, 2016
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dr. shiu is compassionate, never rushes you, and listens carefully. he explains things in an easy to understand manner, not so much "doctor speak", and he CARES! we met him when he was doing rounds in the hospital for our regular doctor, who was changing specialites and shedding patients, so timing was good! we were very impressed with dr. shiu. he came to the memorial for my husband who succumbed to cancer shortly after our meeting dr. shiu. it meant a great deal to me that he attended.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
1 other person found this helpful
Helpful
ms lane in alta loma, ca – Sep 13, 2016
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This is the best doctor I met. Very professional, he explains everything in detail, has patience you can ask all the questions, no rush he takes his time with the patient. I am so gratfull to have him as a doctor for my family.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Patricia Lastres in Rancho Cucamonga, CA – Aug 28, 2016
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I was Referred to Dr Shiu by a another great doctor....This is the doctor everyone should see...thats all I need to say...great staff too ....very happy with my visit :) very knowledgeable and friendly.....
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Mo.R.Youssoffi in Fontana, CA – Apr 20, 2016
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About Me

care philosophy

I am proud to be part of the Optum family of primary care doctors, specialists, and care teams focused on providing care for people ages 65+. At Optum, my team and I help you reach your personal health goals. We focus on your total well-being while...read more
  • Family Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Western University Of Health Sciences

    Medical School
  • Arrowhead Regional Medical Center

    Residency Hospital, 2006
  • Arrowhead Regional Medical Center

    Internship Hospital, 2004
American Board of Medical Specialties®
American Board of Family Medicine®
Family Practice
American Osteopathic Association®
American Osteopathic Board of Family Physicians®
Family Practice/OMT
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
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  • Chinese

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Locations

Practice

Medicor Medical Group Inc.7974 Haven Ave Ste 250 Rancho Cucamonga, CA 91730
1

Practice

San Antonio Regional Hospital999 San Bernardino Rd Upland, CA 91786
2

Practice

Prospect Professional Care Medical Group Inc.600 City Pkwy W Ste 800 Orange, CA 92868
3

Practice

Arrowhead Regional Medical Center400 N Pepper Ave Colton, CA 92324
4