John Nicholas Kasimos, DO
John Nicholas Kasimos is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Olympia Fields, IL, registered in the NPPES registry with NPI 1295728194 since 2005. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1295728194 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Nicholas Kasimos |
| Credential | DO |
| Sex | Male |
| Practice address | 20201 CRAWFORD AVE, ST JAMES HOSPITAL OLYMPIA FIELDS CAMPUS, Olympia Fields, IL, 60461 |
| Phone | 7087474000 |
| Fax | 7085033242 |
| Enumeration date | 2005-08-25 |
| Last updated in NPPES | 2008-04-15 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | — | IL |
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
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01630255 | Other | IL | BC/BS |
Copy-ready billing details
Provider: John Kasimos, DO NPI: 1295728194 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: 20201 CRAWFORD AVE, ST JAMES HOSPITAL OLYMPIA FIELDS CAMPUS, Olympia Fields, IL, 60461
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1124021266 | Alverno Lakeside Corporation | Organization | Ambulance | Olympia Fields, IL |
| 1851384754 | Kalisha Hill | Individual | Anatomic Pathology & Clinical Pathology Physician | Olympia Fields, IL |
| 1467445361 | Mark Fritsch | Individual | Anatomic Pathology & Clinical Pathology Physician | Olympia Fields, IL |
| 1053304956 | Mark Vangorder | Individual | Anatomic Pathology & Clinical Pathology Physician | Olympia Fields, IL |
| 1023001914 | Consultants in Pathology Sc | Organization | Anatomic Pathology & Clinical Pathology Physician | Olympia Fields, IL |
| 1720066244 | Jehanzeb Sheikh | Individual | Hospitalist Physician | Olympia Fields, IL |
| 1477524155 | Quinn Biggs | Individual | Health Service Psychologist | Olympia Fields, IL |
| 1588632913 | David Mehl | Individual | Orthopaedic Surgery Physician | Olympia Fields, IL |
Verify this record
Cross-check NPI 1295728194 against the authoritative CMS record: view John Nicholas Kasimos 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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Is this the official NPI registry?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-04-15.