Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mara San Nicolas, MSW
Social Worker in Maite, GU · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639674633
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Registry record
Entity type Individual (Type 1)
Name Mara San Nicolas
Credential MSW
Sex Female
Practice address 400 Route 8 Ste 303, Maite, GU, 96910
Phone (671) 475-0061
Enumeration date Mar 29, 2018
Last updated in NPPES Mar 29, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LSW-2466 (HI) Primary
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 Mara San Nicolas practice?
The practice location on file with NPPES is in Maite, GU. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mara San Nicolas?
The National Provider Identifier (NPI) for Mara San Nicolas is 1639674633, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Victoria Perez Registered Dietitian · Maite, GU NPI 1598231300 Joliene Hasugulayag Social Worker · Maite, GU NPI 1316635683 Christine Joyce Cristobal Registered Nurse · Maite, GU NPI 1356193429 Rosalo Paeste Registered Nurse · Maite, GU NPI 1245085471 Joan Unsay Registered Nurse · Maite, GU NPI 1952156184
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-29.