Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Nicholas E Kostek, RPH, MS

Pharmacist in Oakland, CA · enumerated 2006.

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

National Provider Identifier

1669566154

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Nicholas E Kostek

Credential RPH, MS

Sex Male

Practice address 1800 Harrison St, Suite 1301, Oakland, CA, 94612

Phone (510) 625-3715

Fax (510) 625-3734

Enumeration date Oct 2, 2006

Last updated in NPPES Aug 23, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 28325 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Nicholas Kostek's NPI record?

Cross-check NPI 1669566154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669566154 active?

Yes, as of the latest NPPES snapshot, NPI 1669566154 is active (record last updated 2007-08-23).

Other providers at this practice address

Browse all →

Andrea Ajayi Emergency Medicine Physician · Oakland, CA NPI 1164413472 Kara Rakoczy-Byun Pulmonary Disease Physician · Oakland, CA NPI 1912987934 Jonah Kramer Pediatrics Physician · Oakland, CA NPI 1689618217 Eric Wong Specialist · Oakland, CA NPI 1669492021 Minh Nguyen Pharmacist · Oakland, CA NPI 1457448748 Harvey Rosenthal Psychiatry Physician · Oakland, CA NPI 1396823159 Minhao Zhou Surgery Physician · Oakland, CA NPI 1992884050 William Gallagher Pharmacotherapy Pharmacist · Oakland, CA NPI 1245398155

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-23.