NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcia Clark, CASAC

Addiction (Substance Use Disorder) Counselor in Owego, NY · enumerated 2008.

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

National Provider Identifier

1053585471

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Marcia Clark
Credential CASAC
Sex Female
Practice address 1062 State Route 38, Owego, NY, 13827
Phone (607) 687-4000
Fax (607) 687-6396
Enumeration date Apr 16, 2008
Last updated in NPPES Apr 16, 2008

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 18570 (NY) Primary

Other identifiers

Identifier Type State Issuer
00618162 Other NY GROUP MEDICAID NUMBER

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

Where does Marcia Clark practice?
The practice location on file with NPPES is in Owego, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marcia Clark?
The National Provider Identifier (NPI) for Marcia Clark is 1053585471, 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 2008-04-16.