Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Douglas Farias Mariano, LCSW
Clinical Social Worker in Apex, NC · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235678053
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Registry record
Entity type Individual (Type 1)
Name Douglas Farias Mariano
Credential LCSW
Sex Male
Practice address 800 W Williams St Ste 280, Apex, NC, 27502
Phone (978) 332-2407
Enumeration date Feb 13, 2017
Last updated in NPPES Jul 18, 2025
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License C018151 (NC) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License C018151 (NC) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Douglas Farias Mariano?
Douglas Farias Mariano is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Sarah Moore Clinical Social Worker · Apex, NC NPI 1619993417 Sarah Thomas Mariano Clinical Social Worker · Apex, NC NPI 1528197472 Cynthia Hickman Mental Health Counselor · Apex, NC NPI 1659546844 Joanne Lisa Mental Health Counselor · Apex, NC NPI 1649510231 Julianne Evans Mental Health Counselor · Apex, NC NPI 1013340645 Maxwell Kirn Clinical Social Worker · Apex, NC NPI 1962803627 Blue Sky Counseling Services, Pllc Mental Health Counselor · Apex, NC NPI 1083269039 Sarah Bianco Clinical Social Worker · Apex, NC NPI 1346896537
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-18.