Masaharu OsatoM.D.
Masaharu Osato, M.D. is a Gastroenterology provider in Torrance, CA affiliated with 3 ambulatory surgery centers in CA, as of July 2026.
- NPI1265470280
- Registered2006
- Centers3
- StateCA
- Class of1983
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Masaharu Osato at a glance
- Provider
- Masaharu Osato
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Torrance, CA
- Medical school
- Loma Linda University School of Medicine
- Graduated
- 1983
- NPI registered
- 2006
- NPI
- 1265470280
- 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 Masaharu Osato practice?
Masaharu Osato, M.D. is based in Torrance, CA and is affiliated with 3 ambulatory surgery centers: Endoscopy Center At Skypark in Torrance, CA, Endoscopy Center Of The South Bay in Torrance, CA, and Surgery Center Of South Bay in Torrance, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Masaharu Osato's NPI number?
Masaharu Osato's National Provider Identifier (NPI) is 1265470280, registered in 2006. Specialty on record: Gastroenterology; credential M.D.
Where did Masaharu Osato go to medical school?
Masaharu Osato, M.D. attended Loma Linda University School of Medicine, graduating in 1983.
How many Gastroenterology providers in California work at ambulatory surgery centers?
547 Gastroenterology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Masaharu Osato among them. The California Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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