Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Roy Tsutomu Ishii, MD

Pediatrics Physician in Lodi, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1922064161

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Registry record

Entity type Individual (Type 1)

Name Roy Tsutomu Ishii

Credential MD

Sex Male

Practice address 1300 W Lodi Ave, Suite P, Lodi, CA, 95242

Phone (209) 369-7493

Enumeration date Apr 25, 2006

Last updated in NPPES Jul 16, 2008

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A23529 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00A235290	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Roy Ishii?

Roy Ishii is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Kevin Stroh Podiatrist · Lodi, CA NPI 1104829431 Lodi Podiatry Group Podiatrist · Lodi, CA NPI 1750360699 Kimberly Hauner Pediatric Nurse Practitioner · Lodi, CA NPI 1295791432 Abelardo Mayo Pediatrics Physician · Lodi, CA NPI 1487610531 Kiana Lee Cox Family Medicine Physician · Lodi, CA NPI 1720044761 Richard Yee Family Medicine Physician · Lodi, CA NPI 1225095235 James Grady Family Medicine Physician · Lodi, CA NPI 1629036413 Sutter Gould Medical Foundation Family Medicine Physician · Lodi, CA NPI 1063468106

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-16.