Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Patrick D Brennan, DC
Chiropractor in Euclid, OH · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801221940
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Registry record
Entity type Individual (Type 1)
Name Dr. Patrick D Brennan
Credential DC
Sex Male
Practice address 27801 Euclid Ave Ste 100, Euclid, OH, 44132
Phone (216) 289-2632
Fax (216) 289-2654
Enumeration date Sep 9, 2013
Last updated in NPPES Jan 24, 2022
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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.
Frequently asked questions
How do I verify Patrick Brennan's NPI record?
Cross-check NPI 1801221940 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1801221940 active?
Yes, as of the latest NPPES snapshot, NPI 1801221940 is active (record last updated 2022-01-24).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-24.