Masaru Ishii
Experienced in Obstructive Sleep Apnea

Dr. Masaru Ishii

Otolaryngology
Johns Hopkins Medicine
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10803 Falls Road, Pavilion III STE 2300, Pavilion III STE 2300, 
Lutherville, MD 

Experienced in Obstructive Sleep Apnea
Johns Hopkins Medicine
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10803 Falls Road, Pavilion III STE 2300, Pavilion III STE 2300, 
Lutherville, MD 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

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.

Dr. Ishii is rated as an Experienced provider by MediFind in the treatment of Obstructive Sleep Apnea. His top areas of expertise are Cerebrospinal Fluid Leak, Prolactinoma, Olfactory Neuroblastoma, Septoplasty, and Endoscopic Transnasal Transsphenoidal Surgery.

His clinical research consists of co-authoring 143 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 3 articles in the study of Obstructive Sleep Apnea.

Residency
Hospital of the University of Pennsylvania, 2002
Specialties
Otolaryngology
Licenses
Otolaryngology in MD
Board Certifications
Head And Neck Surgery
Hospital Affiliations
The Johns Hopkins Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
First Health
  • INSURANCE PLAN
  • MEDICARE PDP
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
HMSA
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Johns Hopkins Healthcare
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE-MEDICAID PLAN
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 16 Less Insurance Carriers -

Locations

Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
10803 Falls Road, Pavilion III STE 2300, Pavilion III STE 2300, Lutherville, MD 21093
Call: 443-997-6467
Other Locations
Johns Hopkins Outpatient Center
601 North Caroline Street, Floor 6, Baltimore, MD 21287
Call: 443-997-6467

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


143 Total Publications

Monocular Vision-Based Endoscopic Sinus Navigation: A SLAM Driven Approach With CT Integration.
Monocular Vision-Based Endoscopic Sinus Navigation: A SLAM Driven Approach With CT Integration.
Journal: Healthcare technology letters
Published: October 31, 2025
View All 143 Publications
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VIEW MORE OBSTRUCTIVE SLEEP APNEA DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Ishii's expertise for a condition
ConditionClose
    • Distinguished
    • Cerebrospinal Fluid Leak
      Dr. Ishii is
      Distinguished
      . Learn about Cerebrospinal Fluid Leak.
      See more Cerebrospinal Fluid Leak experts
    • Facial Paralysis
      Dr. Ishii is
      Distinguished
      . Learn about Facial Paralysis.
      See more Facial Paralysis experts
    • Olfactory Neuroblastoma
      Dr. Ishii is
      Distinguished
      . Learn about Olfactory Neuroblastoma.
      See more Olfactory Neuroblastoma experts
    • Pituitary Tumor
      Dr. Ishii is
      Distinguished
      . Learn about Pituitary Tumor.
      See more Pituitary Tumor experts
    • Prolactinoma
      Dr. Ishii is
      Distinguished
      . Learn about Prolactinoma.
      See more Prolactinoma experts
    • Advanced
    • Chronic Rhinosinusitis with Nasal Polyps (CRSwNP)
      Dr. Ishii is
      Advanced
      . Learn about Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).
      See more Chronic Rhinosinusitis with Nasal Polyps (CRSwNP) experts
    • Empyema
      Dr. Ishii is
      Advanced
      . Learn about Empyema.
      See more Empyema experts
    • Endoscopic Transnasal Transsphenoidal Surgery
      Dr. Ishii is
      Advanced
      . Learn about Endoscopic Transnasal Transsphenoidal Surgery.
      See more Endoscopic Transnasal Transsphenoidal Surgery experts
    • Endoscopy
      Dr. Ishii is
      Advanced
      . Learn about Endoscopy.
      See more Endoscopy experts
    • Septoplasty
      Dr. Ishii is
      Advanced
      . Learn about Septoplasty.
      See more Septoplasty experts
    • Sinus Cancer
      Dr. Ishii is
      Advanced
      . Learn about Sinus Cancer.
      See more Sinus Cancer experts
    View All 7 Advanced Conditions
    • Experienced
    • Acoustic Neuroma
      Dr. Ishii is
      Experienced
      . Learn about Acoustic Neuroma.
      See more Acoustic Neuroma experts
    • Anosmia
      Dr. Ishii is
      Experienced
      . Learn about Anosmia.
      See more Anosmia experts
    • Aseptic and Alopecic Nodules of Scalp (AANS)
      Dr. Ishii is
      Experienced
      . Learn about Aseptic and Alopecic Nodules of Scalp (AANS).
      See more Aseptic and Alopecic Nodules of Scalp (AANS) experts
    • Cushing's disease
      Dr. Ishii is
      Experienced
      . Learn about Cushing's disease.
      See more Cushing's disease experts
    • Emphysema
      Dr. Ishii is
      Experienced
      . Learn about Emphysema.
      See more Emphysema experts
    • Ethmoiditis
      Dr. Ishii is
      Experienced
      . Learn about Ethmoiditis.
      See more Ethmoiditis experts
    View All 19 Experienced Conditions
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