Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Maria C Lopez-Atienza, O.D.
Optometrist in Guaynabo, PR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790868537
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Maria C Lopez-Atienza
Credential O.D.
Sex Female
Practice address Local F10, Guaynabo, PR, 00968
Phone (787) 273-0490
Fax (787) 273-0666
Enumeration date Oct 23, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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 Maria Lopez-Atienza practice?
The practice location on file with NPPES is in Guaynabo, PR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Maria Lopez-Atienza?
The National Provider Identifier (NPI) for Maria Lopez-Atienza is 1790868537, 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 2007-07-08.