
Masaru Ishii, MD, PhD
OtologyNeurotologyOtolaryngology
Highlights
Age Groups Seen
- Young Adult 18-25
- Adult 26-64
Languages
- English
In-Network Plans
View All Accepted Plans (12)Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Masaru Ishii
Primary Academic Title
Associate Professor of Otolaryngology-Head and Neck Surgery
Johns Hopkins Physician
Background
Dr. Masaru Ishii graduated from University of Pennsylvania Perelman School of Medicine. His clinical specialties include surgical management of nasal airway obstruction, chronic sinusitis and sinonasal tumors, as well as endoscopic surgery for skull base tumors.
Centers and Institutes
Recent News Articles and Media Coverage
- Cushing Syndrome and Pituitary Tumor: Neale’s Story
Additional Academic Titles
Associate Professor of Neurological Surgery
Locations
- Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
- 10803 Falls Road, Pavilion III STE 2300, Lutherville, MD 21093
- Get Directions
- phone: 443-997-6467
- fax: 410-367-2297
- Levi Watkins, Jr., M.D., Outpatient Center
- 601 North Caroline Street, Floor 6, Baltimore, MD 21287
- Get Directions
- phone: 443-997-6467
Expertise
Education
- Residency: Hospital of the University of Pennsylvania , 2002
- Medical Education: University of Pennsylvania School of Medicine, MD PhD, 1997
Board Certifications
- Otolaryngology: American Board of Otolaryngology - Head and Neck Surgery, 2003
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.9 out of 5
127 ratings, 57 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 3/10/2026
Over the years I've known Dr.Ishii, he has continually provided excellent care and assessment for my needs. Since my surgery he has continued his expert care and advice. He takes the time to listen to my concerns And provide needed guidance during follow-up visits. I continue to be 100% satisfied with his service and care.
- 5 out of 5 starsReviewed on 3/2/2026
Dr Ishi is very easy to talk to
- 5 out of 5 starsReviewed on 3/2/2026
Dr. Ishii is very patient and answers all my questions and explains everything.
- 5 out of 5 starsReviewed on 2/24/2026
Dr Ishii always listens to my questions and concerns. He explains step by step what he's doing and always is very respectful.
- 5 out of 5 starsReviewed on 2/24/2026
Dr. Ishii is one of the most caring doctors I have ever had. Although my medical situation is complicated, Dr. Ishii has gotten me to a place where it's mostly manageable and is always trying to improve it even more. He is the only physician that didn't just give up on me because it's a complex case and I'm grateful.
- 5 out of 5 starsReviewed on 2/16/2026
I've been with Doctor Ishii almost twenty years. I feel I'm receiving the best possible care from him and his team.
- 5 out of 5 starsReviewed on 2/16/2026
Dr. Ishii is professional and courteous. I can't say enough good things about him or the care I receive from him.
- 5 out of 5 starsReviewed on 2/16/2026
Dr Ishii is excellent
- 5 out of 5 starsReviewed on 2/10/2026
Dr. Ishii is very professional, courteous, and polite. He explains everything to my level of understanding. Very respectful.
- 5 out of 5 starsReviewed on 2/10/2026
Dr. Ishii takes the time to really know me, understand my concerns and with detail explain solutions and next steps. 100% best provider I have ever had!
- 5 out of 5 starsReviewed on 2/9/2026
Dr. Ishii is professional, explains things in a way that anyone can understand, is caring and thoughtful and thorough.
- 5 out of 5 starsReviewed on 2/2/2026
I am beyond grateful for Dr. Masaru Ishii. He educated me on things I feel I should have been told about decades ago, as well as gave me best practices to move forward with and when to return. This was one of the best doctor appointments I've had in a long time. Best ENT visit for me, since last seeing his wife in 2013.
- 5 out of 5 starsReviewed on 2/2/2026
Dr. Ishii is a wonderful doctor. He always has a plan for my issues.
- 5 out of 5 starsReviewed on 2/2/2026
Knowledgeable, patient, showed empathy and concern
- 5 out of 5 starsReviewed on 2/2/2026
Excellent
- 5 out of 5 starsReviewed on 2/2/2026
Dr. Ishii is a phenomenal Physician and provides great care to me.
- 5 out of 5 starsReviewed on 2/2/2026
Great provider.
- 5 out of 5 starsReviewed on 1/27/2026
Dr Ishii is the best!
- 5 out of 5 starsReviewed on 1/5/2026
The provider was very pleasant, efficient and listened to all my problems/
- 5 out of 5 starsReviewed on 12/23/2025
He explained everything very carefully and when he scoped my nose he showed my spouse what was causing my sinus infection
- 5 out of 5 starsReviewed on 12/22/2025
Dr. Ishii is the best. He always takes time to explain anything I don't fully understand and he listens and he cares. I'm very thankful he is my doctor.
- 5 out of 5 starsReviewed on 12/15/2025
Superb care. The team was well coordinated, and Dr. Ishii demonstrated exceptional knowledge, care and expertise.
- 5 out of 5 starsReviewed on 12/15/2025
I was very satisfied
- 4 out of 5 starsReviewed on 12/9/2025
Dr Ishii was quick but fairly thorough
- 5 out of 5 starsReviewed on 12/9/2025
Great doctor. Like his approach to helping me get better.
- 5 out of 5 starsReviewed on 12/1/2025
The provider is excellent
- 5 out of 5 starsReviewed on 11/24/2025
Dr Ishii is fantastic in every way.
- 5 out of 5 starsReviewed on 11/24/2025
Extremely knowledgeable Provides superior care
- 5 out of 5 starsReviewed on 11/17/2025
Dr ishii was one of the doctors that saved my life. I would get a tattoo of his name on my lower back if he asked me to.
- 5 out of 5 starsReviewed on 11/11/2025
Concerned about my overall health. Easy to talk to. Amiable. Informative.
- 5 out of 5 starsReviewed on 10/28/2025
I trust Dr Ishii with my life
- 5 out of 5 starsReviewed on 10/28/2025
Dr. Ishii is wonderful!! It is so obvious in his interactions with his patients that he truly cares and strives to help them improve and have the best quality of life. He has had a significant impact on my life and supported my through a time when I was very discouraged about my own quality of life.
- 5 out of 5 starsReviewed on 10/28/2025
I am privileged to be under his care. I am grateful for his care and surgical skill/expertise
- 5 out of 5 starsReviewed on 10/27/2025
The best provider.I could ever have
- 5 out of 5 starsReviewed on 10/13/2025
Dr. Ishii listened to all of my concerns without judgement.
- 5 out of 5 starsReviewed on 9/23/2025
Dr. Ishii provided excellent care during my visit. He actively listened to my questions, updates and concerns and responded with thorough information and instructions going forward. I am scheduled for surgery on October 17th and feel confident that Dr. Ishii will provide excellent care for me and the surgery will be a success in every way.
- 5 out of 5 starsReviewed on 9/23/2025
Dr. Ishii is very knowledgeable and compassionate. He is always encouraging and supportive.
- 5 out of 5 starsReviewed on 9/23/2025
Most intelligent/thorough physician I've ever had. Proud and grateful to be his patient for more than 7 years now.
- 5 out of 5 starsReviewed on 9/23/2025
Dr. Ishii is an outstanding physician. I'm very pleased with the exceptional level of care that he has consistently provided to me. I consider myself very fortunate to have Dr. Ishii as my ENT physician.
- 5 out of 5 starsReviewed on 9/22/2025
Knowledgeable excellent care
- 5 out of 5 starsReviewed on 9/15/2025
Dr Ishii is a fantastic doctor He is compassionate cares about his patients. I am blessed that he is my Doctor.
- 3 out of 5 starsReviewed on 8/25/2025
He listened, answered my questions, explained things will, and ordered numerous tests to ensure we captured everything
- 5 out of 5 starsReviewed on 8/18/2025
Dr Ishii is highly skilled, caring and listens.
- 5 out of 5 starsReviewed on 7/22/2025
I feel lucky that I have him as my provider
- 5 out of 5 starsReviewed on 6/23/2025
He was very clear in explaining his findings and possibilities. He listened to and answered all our questions
- 5 out of 5 starsReviewed on 6/16/2025
Dr. Ishii is a great physician and good friend. I travel from South Carolina to see him.
- 5 out of 5 starsReviewed on 6/16/2025
Awesome
- 5 out of 5 starsReviewed on 6/10/2025
Dr. Ishii is the very best. His recommendations and treatment have forever changed my life for the better. Words can't express my sincere appreciation for his care.
- 5 out of 5 starsReviewed on 6/10/2025
Very caring and always various alternatives for issue and hand and has my best interest at heart.
- 5 out of 5 starsReviewed on 6/10/2025
Dr. Ishii is the absolute best. He is always updating me to new and better options for my hyper active chronic sinuses issues and he has managed my care wonderfully over the last 10 years.
- 5 out of 5 starsReviewed on 6/9/2025
Professional
- 5 out of 5 starsReviewed on 6/5/2025
Been seeing Dr. Ishii for a number of years, he is the best.
- 5 out of 5 starsReviewed on 5/12/2025
Excellent doctor! Started as my second opinion and became My main ENT / surgeon.
- 5 out of 5 starsReviewed on 5/5/2025
Knowledgeable about state-of-the-art in his field, yet conservative when appropriate. Efficient and incredibly competent.
- 5 out of 5 starsReviewed on 4/22/2025
Dr. Ishii is always courteous, attentive and helpful. I have the utmost respect for him and appreciate all he has done for me.
- 5 out of 5 starsReviewed on 4/22/2025
Excellent visit-good communicator-started on time- easy to schedule appt
- 5 out of 5 starsReviewed on 4/21/2025
Good treatment plan.