Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Donald John Piergalski, RPH. CDM.
Pharmacist in Elmhurst, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952503583
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Registry record
Entity type Individual (Type 1)
Name Mr. Donald John Piergalski
Credential RPH. CDM.
Sex Male
Practice address 942 S York St, Elmhurst, IL, 60126
Phone (630) 834-2000
Fax (630) 834-0238
Enumeration date Jun 5, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1952503583 active?
Yes, as of the latest NPPES snapshot, NPI 1952503583 is active (record last updated 2007-07-08).
How do I verify Donald Piergalski's NPI record?
Cross-check NPI 1952503583 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.