Masaru IshiiM.D.,PH.D.
Masaru Ishii, M.D.,PH.D. is an Otolaryngology provider in Baltimore, MD, as of July 2026.
- NPI1427004381
- Registered2006
- Class of1997
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Masaru Ishii at a glance
- Provider
- Masaru Ishii
- Credential
- M.D.,PH.D.
- Specialty
- Otolaryngology
- Procedures
- Otolaryngology CPT codes
- Location
- Baltimore, MD
- Medical school
- Perelman School of Med at the University of Pennsylvania
- Graduated
- 1997
- NPI registered
- 2006
- NPI
- 1427004381
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Masaru Ishii practice?
Masaru Ishii, M.D.,PH.D. is based in Baltimore, MD. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Masaru Ishii's NPI number?
Masaru Ishii's National Provider Identifier (NPI) is 1427004381, registered in 2006. Specialty on record: Otolaryngology; credential M.D.,PH.D.
Where did Masaru Ishii go to medical school?
Masaru Ishii, M.D.,PH.D. attended Perelman School of Med at the University of Pennsylvania, graduating in 1997.
How many Otolaryngology providers in Maryland work at ambulatory surgery centers?
58 Otolaryngology surgeons and proceduralists in Maryland are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Masaru Ishii among them. The Maryland Otolaryngology directory lists each one by city with credential, NPI, and center affiliations.
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