Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joseph Maciag, HS3
Dental Assistant in San Juan, PR · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326337353
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Joseph Maciag
Credential HS3
Sex Male
Practice address 5 Calle La Puntilla, San Juan, PR, 00901
Phone (787) 729-4344
Enumeration date Mar 30, 2011
Last updated in NPPES Mar 30, 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 Joseph Maciag?
Joseph Maciag is registered in NPPES with the primary taxonomy of Dental Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Patrick Mackey Other Technician · San Juan, PR NPI 1366421992 Us Coast Guard Sector San Juan Clinic/Center · San Juan, PR NPI 1184603714 Abdiel Bermudez Other Technician · San Juan, PR NPI 1457493470 Gwendolyn Mann Other Technician · San Juan, PR NPI 1144457136 Nicole Napolitano Basic Emergency Medical Technician · San Juan, PR NPI 1154652675 Us Coast Guard Point of Service · San Juan, PR NPI 1245541812 Elizabeth Dempsey Other Technician · San Juan, PR NPI 1295033728 Reyna Sandoval Dental Hygienist · San Juan, PR NPI 1881987352
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-30.