Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Wu, NP

Adult Health Nurse Practitioner in Chelmsford, MA · enumerated 2006.

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

National Provider Identifier

1447212725

Verified

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Registry record

Entity type Individual (Type 1)

Name John Wu

Credential NP

Sex Male

Practice address 228 Billerica Rd, Chelmsford, MA, 01824

Phone (978) 250-6000

Fax (678) 250-6460

Enumeration date Apr 4, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 195801 (MA) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 195801 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
NP0609	Other	MA	BLUE CROSS
F700	Other	MA	HARVARD PILGRIM
0356620	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

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 John Wu?

John Wu is registered in NPPES with the primary taxonomy of Adult Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.