Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Grego, RPH

Pharmacist in Wheat Ridge, CO · enumerated 2013.

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

National Provider Identifier

1598100778

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Registry record

Entity type Individual (Type 1)

Name Mr. William Grego

Credential RPH

Sex Male

Practice address 3400 Youngfield St, Wheat Ridge, CO, 80033

Phone (303) 238-7301

Enumeration date May 1, 2013

Last updated in NPPES May 1, 2013

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 13287 (CO) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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 William Grego's NPI record?

Cross-check NPI 1598100778 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598100778 active?

Yes, as of the latest NPPES snapshot, NPI 1598100778 is active (record last updated 2013-05-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-01.