Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marlyn I. Ferrer
Pharmacist in Mayaguez, PR · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104119791
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Registry record
Entity type Individual (Type 1)
Name Marlyn I. Ferrer
Sex Female
Practice address 992 Ave Hostos, Mayaguez, PR, 00682
Phone (787) 831-9251
Enumeration date May 16, 2011
Last updated in NPPES May 16, 2011
Taxonomy & licenses
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 Marlyn Ferrer?
Marlyn Ferrer is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Mildred Garcia Pharmacist · Mayaguez, PR NPI 1063705655 Marilu Matias Pharmacist · Mayaguez, PR NPI 1730472317 Ileana Ortiz Pharmacist · Mayaguez, PR NPI 1831482751 Abdiel Rivera Pharmacist · Mayaguez, PR NPI 1932492709 Suheily Matos Pharmacist · Mayaguez, PR NPI 1184984981 Amy Polanco Pharmacist · Mayaguez, PR NPI 1619376050 Nohely Trabal Pharmacist · Mayaguez, PR NPI 1790317386 Veronica Mercado Pharmacist · Mayaguez, PR NPI 1649858788
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-16.