
Samuel Chi-Hung Yiu, MD, PhD
Cornea and External Diseases
Highlights
Johns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Samuel Chi-Hung Yiu
Primary Academic Title
Associate Professor of Ophthalmology
Background
Samuel C. Yiu, M.D., Ph.D., is an associate professor of ophthalmology at the Wilmer Eye Institute, specializing in cornea and external eye diseases, cataracts and refractive surgery (LASIK). In addition, he is a nationally and internationally recognized specialist in ocular surface diseases and ocular surface reconstruction surgery.
Dr. Yiu received his M.Sc. (applied biometry) and Ph.D. (physiology and biophysics) from the University of Southern California. He then completed a post-doctoral fellowship in lacrimal physiology at the Schepens Eye Institute at Harvard Medical School and went on to earn his M.D. from the University of Alberta in Canada. Dr. Yiu completed an internship and his ophthalmology residency at Dalhousie University in Halifax, Nova Scotia and a fellowship in cornea, external disease and refractive surgery at the University of Southern California’s Doheny Eye Institute. After serving as the director of Doheny’s Ocular Surface Center and co-director of Doheny’s cornea division, Dr. Yiu joined the Wilmer faculty in 2011 and spent two years as the chief of the cornea division at King Khaled Eye Specialist Hospital (KKESH), Wilmer’s affiliate hospital in Riyadh, Saudi Arabia, before returning to Baltimore in 2013.
Centers and Institutes
Research Interests
Basic Research, Dry Eye, Lacrimal Gland Physiology, Nanodrug delivery
Locations
- Johns Hopkins Bayview Medical Center
- 4940 Eastern Avenue, Bayview Medical Offices, Level 01 (G), Clinic 3, Baltimore, MD 21224
- phone: 410-955-5080
- fax: 410-550-2231
- The Johns Hopkins Hospital
- 1800 Orleans Street, Maumenee Lobby, Baltimore, MD 21287
- phone: 410-955-5080
- fax: 410-955-0468
Expertise
Education
Keck School of Medicine of USC
Fellowship, Cornea, External Diseases & Refractive Surgery, 2001Dalhousie University Faculty of Medicine
Residency, Ophthalmology, 1999University of Alberta Faculty of Medicine
Medical Education, MD, 1994Board Certifications
Ophthalmology
American Board of Ophthalmology, 2004Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Humana
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- UnitedHealthcare
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.6 out of 5
222 ratings, 81 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 2/21/2025
Dr is Thorough, good listener, caring, good communicator.Technicians are THEBEST of any I have had anywhere.
- 5 out of 5 starsReviewed on 2/21/2025
Dr. Yiu is very personable and doesn't hesitate to answer my questions or address my concerns.
- 5 out of 5 starsReviewed on 2/18/2025
Dr. Yiu is extremely knowledgeable and experienced. I know I am taken care of very well.
- 5 out of 5 starsReviewed on 2/14/2025
Excellent
- 5 out of 5 starsReviewed on 2/14/2025
Dr. Yiu was thoughtful, helpful and compassionate -
- 5 out of 5 starsReviewed on 2/13/2025
Nice and knowledgable
- 5 out of 5 starsReviewed on 2/11/2025
Very thorough, polite and considerate. He appeared to culturally competent
- 5 out of 5 starsReviewed on 2/11/2025
Attentive, considerate, kind, professional.
- 5 out of 5 starsReviewed on 2/4/2025
Excellent
- 5 out of 5 starsReviewed on 2/4/2025
Caring and professional
- 5 out of 5 starsReviewed on 2/4/2025
Thorough, kind and knowledgeable.
- 5 out of 5 starsReviewed on 1/28/2025
Professional, good listener, caring
- 5 out of 5 starsReviewed on 1/17/2025
Dr. Samuel Yiu is a very sensitive and caring person besides being an excellent professional. I appreciate those qualities very much.
- 5 out of 5 starsReviewed on 1/16/2025
ExcellantDr.
- 5 out of 5 starsReviewed on 1/14/2025
A really great professional
- 5 out of 5 starsReviewed on 12/13/2024
Keep up with the excellent services.
- 5 out of 5 starsReviewed on 12/13/2024
Excellent as usual
- 5 out of 5 starsReviewed on 12/6/2024
I always receive Excellent service and care I'm
- 5 out of 5 starsReviewed on 12/5/2024
Dr Yiu is a compassionate and excellent doctor. I am delighted with the outcome of my surgery. Thank you Dr Yiu!
- 5 out of 5 starsReviewed on 12/5/2024
The best!
- 5 out of 5 starsReviewed on 11/22/2024
My provider was warm and friendly
- 5 out of 5 starsReviewed on 11/20/2024
VERY GOOD VERY
- 5 out of 5 starsReviewed on 11/20/2024
Dr. You did my cataract surgery 2 and 1/2 years ago I found him to be a very skilled and knowledgeable doctor. I would highly recommend him.
- 5 out of 5 starsReviewed on 11/5/2024
Dr Yiu is very knowledgeable and very kind and a compassionate doctor! One of the best I've ever had.
- 5 out of 5 starsReviewed on 11/5/2024
Dr. Yiu is kind yet blunt about possible outcomes
- 5 out of 5 starsReviewed on 10/31/2024
Excellent
- 5 out of 5 starsReviewed on 10/31/2024
Dr Yiu is the best! We greatly appreciate him and are indebted to him!
- 4 out of 5 starsReviewed on 10/29/2024
Very Professional and concerned about patients
- 5 out of 5 starsReviewed on 10/24/2024
Caring and professional
- 5 out of 5 starsReviewed on 10/10/2024
Dr. Yiu is an humane and compassionate provider.
- 4 out of 5 starsReviewed on 9/27/2024
He provided helpful, concrete info about my situation. He also provided me with an eye shield.
- 5 out of 5 starsReviewed on 9/24/2024
Very calm, patient and knowledgeable
- 5 out of 5 starsReviewed on 9/24/2024
I have complete confidence in Dr. Yiu as he monitors my eye conditions. He is friendly as well as professional in his manner.
- 5 out of 5 starsReviewed on 9/19/2024
After suffering for years with severe dry eye disease-pain that affected my work, driving, reading, everything really-Dr. Yiu finally found a treatment that has brought significant relief. It has changed my life. Dr. Yiu is kind and extremely knowledgeable and skilled; I feel very lucky to be under his care.
- 5 out of 5 starsReviewed on 9/19/2024
Dr. Yiu is the best doctor I've had in my 62 years. I can't say enough good things about him. He is an excellent doctor but, more importantly, his knowledge and expertise is perfectly complemented with a level of care & concern that is, in my experience, almost non-existent in today's medical Industry. My visits are always a good experience even when the news Is not so good. I look forward to them.
- 5 out of 5 starsReviewed on 9/19/2024
He's a great eye dr
- 5 out of 5 starsReviewed on 9/10/2024
Very nice
- 5 out of 5 starsReviewed on 9/10/2024
Efficient and professional.
- 5 out of 5 starsReviewed on 9/10/2024
The Provider was very helpful in providing the options for my care. Did not rush me and took the time to answer my question. Great experience!
- 5 out of 5 starsReviewed on 8/30/2024
Excellent!
- 5 out of 5 starsReviewed on 8/22/2024
Good
- 5 out of 5 starsReviewed on 8/20/2024
Dr. Yiu is a brilliant physician who is an expert on his field, a very competent doctor, and caring person.
- 5 out of 5 starsReviewed on 8/20/2024
Excellent
- 5 out of 5 starsReviewed on 8/13/2024
He was great and did everything to help my situation
- 5 out of 5 starsReviewed on 8/6/2024
Dr. Yiu is great. I am very confident with him doing the 2 cataract surgeries and care provided.
- 5 out of 5 starsReviewed on 8/6/2024
Great!
- 5 out of 5 starsReviewed on 8/2/2024
Dr. Yui is extremely competent and so very concerned with getting to the bottom of any eye problems and the causes.
- 3 out of 5 starsReviewed on 7/30/2024
Dr seemed very very busy.
- 5 out of 5 starsReviewed on 7/23/2024
Dr Yiu is a very good very knowledgeable person
- 5 out of 5 starsReviewed on 7/23/2024
Very good Doctor
- 5 out of 5 starsReviewed on 7/18/2024
He did a great job with my cataract surgery. I so appreciate his statement that he would take his time due to my [ ] dystrophy. I am very happy with the outcome of my surgery.
- 5 out of 5 starsReviewed on 7/17/2024
Very professional and knowledgeable
- 5 out of 5 starsReviewed on 7/17/2024
Went for second opinion. Doctor provided peace of mind.
- 5 out of 5 starsReviewed on 7/16/2024
Professionaal, friendly
- 5 out of 5 starsReviewed on 7/2/2024
Very nice doctor. I am happy he is my doctor
- 5 out of 5 starsReviewed on 6/25/2024
Everyone very nice and prompt, specially the technician was very patient as I was having issues with my dry eyes, the Doctor addressed that right away and was able to explain how to take care of the symptoms They were able to make an appointment the next day to my delight
- 5 out of 5 starsReviewed on 6/21/2024
I recently visited my healthcare provider, and I must say, he was incredibly helpful and thorough in answering all my questions. Unlike my previous doctor at another place, he didn't give up on finding solutions and truly showed a commitment to my well-being. His persistence and dedication have made a significant difference in my care, and I'm grateful for his support.
- 5 out of 5 starsReviewed on 6/20/2024
Professional, knowledgeable, concerned, and personable.
- 5 out of 5 starsReviewed on 6/18/2024
Very personable. Excellent manner
- 5 out of 5 starsReviewed on 6/18/2024
Very good
- 5 out of 5 starsReviewed on 6/6/2024
Dr Yiu. Is a knowledgeable and excellent provider. I trust his opinions and recommendations totally. I have recommended him to friends who need specific eye care that is his speciality for eye care.
- 5 out of 5 starsReviewed on 5/31/2024
The Doctor was very pleasant and informative. He ensured I understood everything.
- 5 out of 5 starsReviewed on 5/31/2024
Dr.Yiu was compassionate and took great care in explaining how my eye health would progress and the reasons why my symptoms developed after surgery. He was DR#5 in my search to find eye care.. He's fantastic.
- 5 out of 5 starsReviewed on 5/28/2024
We always wait 30-45 mins to be seen. That seems excessive for the first appointment of the day.
- 5 out of 5 starsReviewed on 5/21/2024
Excellent clinician. He listened to my issues and explained in detail the next steps to lessen my symptoms.
- 5 out of 5 starsReviewed on 5/21/2024
Dr. Yiu answered all of my questions. He was both very personable and professional.
- 5 out of 5 starsReviewed on 5/17/2024
Doctor spent time with me and explained everything to me. He did not rush through the appointment.
- 5 out of 5 starsReviewed on 5/14/2024
Easy to talk with. Spends ample time with you.
- 5 out of 5 starsReviewed on 5/14/2024
Excellent doctor
- 5 out of 5 starsReviewed on 5/14/2024
Would have liked more clearly marked entrance.google put me in alley
- 5 out of 5 starsReviewed on 5/10/2024
Excellent care.
- 5 out of 5 starsReviewed on 5/9/2024
Dr Yiu is a compassionate, courteous ,knowledgeable physician with great experience and an asset to Wilmer Eye Institution.
- 5 out of 5 starsReviewed on 5/3/2024
Excellent service loop
- 5 out of 5 starsReviewed on 5/2/2024
Dr. Yiu inspires confidence.
- 5 out of 5 starsReviewed on 4/30/2024
He is very good at what he does and is very knowledgeable about what he does
- 5 out of 5 starsReviewed on 4/26/2024
Good
- 5 out of 5 starsReviewed on 4/25/2024
Everything was good
- 5 out of 5 starsReviewed on 4/23/2024
I have been a patient at Wilmer for 60 YEARS!! I am so grateful that I was able to ask for an appt and get it THE NEXT DAY!! So very kind and helpful.
- 5 out of 5 starsReviewed on 4/17/2024
Dr. Yiu is a complete professional. He is thorough, thoughtful, approachable, and talented. He will continue to be my go-to ophthalmologist & cornea specialist.