Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leslie Ann Oliver, CNM, APRN

Midwife in Sandwich, IL · enumerated 2019.

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

National Provider Identifier

1770045577

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Registry record

Entity type Individual (Type 1)

Name Leslie Ann Oliver

Credential CNM, APRN

Sex Female

Practice address 831 Sandhurst Dr, Sandwich, IL, 60548

Phone (815) 786-1088

Enumeration date Apr 2, 2019

Last updated in NPPES Apr 2, 2019

Taxonomy & licenses

176B00000X Midwife Other Service Providers · License 209018972 (IL) Primary

CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care. About the CNM credential

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.

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Frequently asked questions

Is NPI 1770045577 active?

Yes, as of the latest NPPES snapshot, NPI 1770045577 is active (record last updated 2019-04-02).

How do I verify Leslie Oliver's NPI record?

Cross-check NPI 1770045577 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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James Hawkins Obstetrics & Gynecology Physician · Sandwich, IL NPI 1558421875 Aishling Obstetrics and Gynecology, S.C. Obstetrics & Gynecology Physician · Sandwich, IL NPI 1548321326 Foxland Respiratory Consultants, S.C. Pulmonary Disease Physician · Sandwich, IL NPI 1912056284 Fox Valley Vein Centers, P.C. Clinic/Center · Sandwich, IL NPI 1114155983 Jill Palko Obstetrics & Gynecology Physician · Sandwich, IL NPI 1093033011 Stephanie Winn Women's Health Clinical Nurse Specialist · Sandwich, IL NPI 1194269910

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-02.