Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Takeo Nishiyama, MD

Pediatrics Physician in Waltham, MA · enumerated 2005.

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

National Provider Identifier

1710978622

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Takeo Nishiyama

Credential MD

Sex Male

Practice address 40 Second Ave, Ste 400, Waltham, MA, 02451

Phone (781) 487-4340

Fax (781) 487-4341

Enumeration date Oct 31, 2005

Last updated in NPPES Jan 3, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 81412 (MA) 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
081412	Other	MA	TUFTS HEALTH PLAN
J31669	Other	MA	BCBS MA
3141683	Medicaid	MA	-

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

How do I verify Stephen Nishiyama's NPI record?

Cross-check NPI 1710978622 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1710978622 active?

Yes, as of the latest NPPES snapshot, NPI 1710978622 is active (record last updated 2013-01-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-03.