Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Corey Marks
Professional Counselor in Darby, PA · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1992403141
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Corey Marks
Sex Male
Practice address 629 Colwyn Ave, Darby, PA, 19023
Phone (267) 269-8751
Enumeration date Feb 17, 2023
Last updated in NPPES Feb 17, 2023
Taxonomy & licenses
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary
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 Corey Marks practice?
The practice location on file with NPPES is in Darby, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Corey Marks?
The National Provider Identifier (NPI) for Corey Marks is 1992403141, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-17.