Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Steven Weiss, DC
Chiropractor in Brea, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801944285
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Steven Weiss
Credential DC
Sex Male
Practice address 1001 E Imperial Hwy, A-1, Brea, CA, 92821
Phone (714) 256-0411
Fax (714) 256-0511
Enumeration date Jan 8, 2007
Last updated in NPPES Aug 9, 2010
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
Where does Mark Weiss practice?
The practice location on file with NPPES is in Brea, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Weiss?
The National Provider Identifier (NPI) for Mark Weiss is 1801944285, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-09.