Derek Pechacek, FNP-C
Derek Pechacek is a Family Nurse Practitioner provider (Nurse Practitioner) practicing in O Fallon, IL, registered in the NPPES registry with NPI 1114356607 since 2013.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1114356607 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Derek Pechacek |
| Credential | FNP-C |
| Sex | Male |
| Practice address | O Fallon, IL, 62269 |
| Phone | 6186243368 |
| Fax | 6186243387 |
| Enumeration date | 2013-11-05 |
| Last updated in NPPES | 2026-05-29 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363LF0000X | Family Nurse Practitioner | Primary | 209-010889 | IL |
Copy-ready billing details
Provider: Derek Pechacek, FNP-C NPI: 1114356607 Taxonomy: 363LF0000X (Family Nurse Practitioner) Address: O Fallon, IL, 62269
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1245287085 | James Lundy | Individual | Family Medicine Physician | O Fallon, IL |
| 1992959282 | Richard Knight | Individual | Family Nurse Practitioner | O Fallon, IL |
| 1285945436 | Candace Nall | Individual | Emergency Medicine Physician | O Fallon, IL |
| 1326345141 | Susan Drabing | Individual | Family Nurse Practitioner | O Fallon, IL |
| 1962700757 | Stephanie Armstrong | Individual | Physician Assistant | O Fallon, IL |
| 1700177763 | Dawn Drewes | Individual | Family Nurse Practitioner | O Fallon, IL |
| 1427324656 | Miranda Pogue | Individual | Family Nurse Practitioner | O Fallon, IL |
| 1518356088 | Bena Weeks | Individual | Family Nurse Practitioner | O Fallon, IL |
Verify this record
Cross-check NPI 1114356607 against the authoritative CMS record: view Derek Pechacek 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
Is NPI 1114356607 active?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-05-29.