Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Robert Paley, R.PH.

Q: What is the NPI number for Mark Paley?

The National Provider Identifier (NPI) for Mark Paley is 1558354498, a Type 1 (individual) record in the CMS NPPES registry.

Pharmacist in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1558354498

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Robert Paley

Credential R.PH.

Sex Male

Practice address 845 N Michigan Ave, 902 West, Chicago, IL, 60611

Phone (312) 280-1220

Fax (312) 280-7794

Enumeration date Aug 25, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers 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

What is the NPI number for Mark Paley?

The National Provider Identifier (NPI) for Mark Paley is 1558354498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Paley practice?

The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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