Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Geraldine D.A. Mariano, RPH
Pharmacist in Dededo, GU · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235879909
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Registry record
Entity type Individual (Type 1)
Name Geraldine D.A. Mariano
Credential RPH
Sex Female
Practice address 330 W Marine Corps Dr, Dededo, GU, 96929
Phone (671) 632-3385
Enumeration date Mar 31, 2022
Last updated in NPPES Mar 31, 2022
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH 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 Geraldine Mariano practice?
The practice location on file with NPPES is in Dededo, GU. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Geraldine Mariano?
The National Provider Identifier (NPI) for Geraldine Mariano is 1235879909, 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 2022-03-31.