Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mario Santos, HIV COUNSELOR
Technician in Worcester, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952519936
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Registry record
Entity type Individual (Type 1)
Name Mario Santos
Credential HIV COUNSELOR
Sex Male
Practice address 19 Tacoma St, Worcester, MA, 01605
Phone (508) 852-1808
Fax (508) 853-8593
Enumeration date May 21, 2007
Last updated in NPPES Jul 9, 2007
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1301071 | Medicaid | MA | - |
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
What is the NPI number for Mario Santos?
The National Provider Identifier (NPI) for Mario Santos is 1952519936, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mario Santos practice?
The practice location on file with NPPES is in Worcester, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Gina D'Ottavio Family Medicine Physician · Worcester, MA NPI 1114902038 Ines Hertz Family Medicine Physician · Worcester, MA NPI 1932184850 Willa Kahn Family Medicine Physician · Worcester, MA NPI 1578548491 Michele Pici Family Medicine Physician · Worcester, MA NPI 1831174754 Elizabeth Mcgovern Family Medicine Physician · Worcester, MA NPI 1669457396 Edward M. Kennedy Community Health Center, Inc Federally Qualified Health Center (FQHC) · Worcester, MA NPI 1609842152 Brian Genna General Practice Dentistry · Worcester, MA NPI 1093776312 Donna Raymond Family Nurse Practitioner · Worcester, MA NPI 1407817687
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.