Santosh Raja, DO
Santosh Raja is a General Practice Physician provider (General Practice) practicing in O Fallon, IL, registered in the NPPES registry with NPI 1881191187 since 2018. The credential DO stands for Doctor of Osteopathic Medicine. Practices at Southern Illinois Healthcare Foundation Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1881191187 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Santosh Raja |
| Credential | DO |
| Sex | Male |
| Practice address | 3 SAINT ELIZABETH BLVD STE 4000, O Fallon, IL, 62269 |
| Phone | 6182337880 |
| Fax | 6182566558 |
| Enumeration date | 2018-04-12 |
| Last updated in NPPES | 2025-08-10 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | 2179 | NE |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Copy-ready billing details
Provider: Santosh Raja, DO NPI: 1881191187 Taxonomy: 208D00000X (General Practice Physician) Address: 3 SAINT ELIZABETH BLVD STE 4000, O Fallon, IL, 62269
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1366490146 | Marjorie Guthrie | Individual | Family Medicine Physician | O Fallon, IL |
| 1295781607 | Kenneth Reinert | Individual | Family Medicine Physician | O Fallon, IL |
| 1679672273 | Aristides Garces | Individual | Family Medicine Physician | O Fallon, IL |
| 1558440776 | Anne Nash | Individual | Family Medicine Physician | O Fallon, IL |
| 1437386083 | Christina Bereda | Individual | Family Medicine Physician | O Fallon, IL |
| 1417185984 | Mechelle Elosiebo | Individual | Family Medicine Physician | O Fallon, IL |
| 1730317702 | Vinay Bhooma | Individual | Family Medicine Physician | O Fallon, IL |
| 1366702870 | Crystal Manse | Individual | Internal Medicine Physician | O Fallon, IL |
Verify this record
Cross-check NPI 1881191187 against the authoritative CMS record: view Santosh Raja on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-08-10.