NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Jeffrey D Postlewaite,Dosc

Obstetrics & Gynecology Physician in St Charles, IL · enumerated 2006 · authorized official Jeffrey Postlewaite, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1194743807

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Jeffrey D Postlewaite,Dosc
Other name <Unavail>
Practice address 2900 Foxfield Rd, Suite 306, St Charles, IL, 60174
Fax (630) 845-9928
Enumeration date Jul 18, 2006
Last updated in NPPES Jun 30, 2008

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 042616938 (IL) Primary

Authorized official

Name Jeffrey Postlewaite
Title President

Other identifiers

Identifier Type State Issuer
04522934 Other IL BLUE CROSS BLUE SHIELD PROVIDER NUMBER

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 → Validate an NPI →

Frequently asked questions

Who is the authorized official for Jeffrey D Postlewaite,Dosc?
NPPES lists Jeffrey Postlewaite (President) as the authorized official for this organization.
What is the NPI number for Jeffrey D Postlewaite,Dosc?
The NPI for Jeffrey D Postlewaite,Dosc is 1194743807, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-30.