Gerald Cahill, M.D.
Gerald Cahill is a Surgery Physician provider (Surgery) practicing in Olympia Fields, IL, registered in the NPPES registry with NPI 1346357795 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1346357795 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Gerald Cahill |
| Credential | M.D. |
| Sex | Male |
| Practice address | 3700 W 203RD ST STE 302, Olympia Fields, IL, 60461 |
| Phone | 7086792120 |
| Fax | 7085033230 |
| Enumeration date | 2006-08-23 |
| Last updated in NPPES | 2023-04-14 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Secondary | 01058798A | IN |
| 208C00000X | Colon & Rectal Surgery Physician | Secondary | 036068765 | IL |
| 208C00000X | Colon & Rectal Surgery Physician | Secondary | 01058798A | IN |
| 208600000X | Surgery Physician | Primary | 036068765 | IL |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036068765 | Medicaid | IL | — |
| 200511540 | Medicaid | IN | — |
| F400340959 | Other | IL | INDIVIDUAL MEDICARE PTAN SPECIALTY PHYSICIANS OF ILLINOIS |
Copy-ready billing details
Provider: Gerald Cahill, M.D. NPI: 1346357795 Taxonomy: 208600000X (Surgery Physician) Address: 3700 W 203RD ST STE 302, Olympia Fields, IL, 60461
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1487701728 | John Karl | Individual | Nurse Practitioner | Olympia Fields, IL |
| 1144992264 | Megan Gac | Individual | Family Nurse Practitioner | Olympia Fields, IL |
Verify this record
Cross-check NPI 1346357795 against the authoritative CMS record: view Gerald Cahill 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 2023-04-14.