Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Who Inc

Q: What is the NPI number for Who Inc?

The NPI for Who Inc is 1831265594, a Type 2 (organization) record in the CMS NPPES registry.

Specialty Pharmacy in Portland, ME · enumerated 2006 · authorized official William Hewitt, Owner.

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

National Provider Identifier

1831265594

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Registry record

Entity type Organization (Type 2)

Legal business name Who Inc

Other name <Unavail>

Practice address 580 Brighton Ave, Portland, ME, 04102

Phone (207) 773-4746

Fax (207) 772-8680

Enumeration date Nov 27, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

333600000X Pharmacy Suppliers · License PH50001174 (ME) Secondary

3336C0003X Community/Retail Pharmacy Suppliers Secondary

3336C0004X Compounding Pharmacy Suppliers Secondary

3336M0002X Mail Order Pharmacy Suppliers Secondary

3336S0011X Specialty Pharmacy Suppliers Primary

Authorized official

Name William Hewitt

Title Owner

Phone (207) 773-4746

Other identifiers

Identifier	Type	State	Issuer
2007626	Other	-	OTHER ID NUMBER-COMMERCIAL NUMBER

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Who Inc?

The NPI for Who Inc is 1831265594, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Who Inc?

NPPES lists William Hewitt (Owner) as the authorized official for this organization.

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