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OB-GYNE ASSOCIATES OF LIBERTYVILLE, SC
NPI 1457563272
Obstetrics & Gynecology in Libertyville, IL

Active since May 04, 2007CLIA 14D0890861 · Waiver
801 S MILWAUKEE AVENUE, STE 100, LIBERTYVILLE, IL 60048(847) 680-3400(847) 680-3486 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ob-gyne Associates Of Libertyville, Sc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OB-GYNE ASSOCIATES OF LIBERTYVILLE, SC (NPI 1457563272) is a healthcare organization registered as an obstetrics & gynecology in Libertyville, Illinois and active in the NPI registry since May 2007. The organization holds a CLIA Waiver certificate valid through August 25, 2028 and lists Rannveig Middleton, Md, as its authorized official.

NPPES Registry Identity

NPI1457563272
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameOB-GYNE ASSOCIATES OF LIBERTYVILLE, SC
Location Address801 S MILWAUKEE AVENUE, STE 100Libertyville, IL 60048
Mailing Address801 S Milwaukee Avenue, Ste 100Libertyville, IL 60048 · (847) 680-3400 · Fax (847) 680-3486
Phone(847) 680-3400
Fax(847) 680-3486
Organization SubpartNo
Authorized OfficialRannveig MiddletonMd · (847) 680-3400
Enumeration DateMay 4, 2007
Last NPPES UpdateApril 21, 2025
NPPES CertifiedApril 21, 2025
✔ NPI 1457563272 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
801 S MILWAUKEE AVENUE, STE 100, Libertyville, IL 60048
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Other Identifiers 1

Other04900943IL · Blue Cross Blue Sheild

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ob-gyne Associates Of Libertyville, Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Ob-Gyne Associates Of Libertyville, Sc, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 7 within 10 miles. They are listed nearest first.

Clinicians, nearest first (7)

Anastasia Brierton, DO
Obstetrics/Gynecology
NPI 1992385520
801 S MILWAUKEE AVE STE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Megan Davis, MD
Obstetrics/Gynecology
NPI 1790364412
801 S MILWAUKEE AVE STE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Rannveig Middleton, M.D.
Obstetrics/Gynecology
NPI 1912292822
801 S MILWAUKEE AVE STE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Akemi Nakanishi, M.D.
Obstetrics/Gynecology
NPI 1366436388
801 S MILWAUKEE AVE SUITE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Jennifer Schaefer, M.D.
Obstetrics/Gynecology
NPI 1669468484
801 S MILWAUKEE AVE SUITE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Adriana Spellman, M.D.
Obstetrics/Gynecology
NPI 1760474589
801 S MILWAUKEE AVE STE 100
Libertyville, IL 60048
(847) 680-3400
✔ PECOS✔ Accepts MedicareSame address
Robert Rosenberg, M.D.
Obstetrics/Gynecology
NPI 1477535151
1170 E BELVIDERE RD SUITE 102
Grayslake, IL 60030
(847) 548-9999
✔ PECOS✔ Accepts Medicare4.5 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D0890861

Ob-Gyne Associates Of Libertyville · Libertyville, IL
Active · expires Aug 25, 2028
CLIA Number14D0890861
Laboratory TypePhysician Office
Certificate Effective DateAugust 26, 2026
Certificate Expiration DateAugust 25, 2028
Laboratory DirectorAdriana Spellman MD
Laboratory Phone(847) 680-3400
Laboratory LocationOb-Gyne Associates Of Libertyville801 S Milwaukee-Suite 100, Libertyville, IL 60048
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ob-Gyne Associates Of Libertyville, Sc's NPI number?

The NPI number for Ob-Gyne Associates Of Libertyville, Sc is 1457563272. It was assigned to this organization in the NPPES registry on May 4, 2007.

Where is Ob-Gyne Associates Of Libertyville, Sc located?

Ob-Gyne Associates Of Libertyville, Sc is located at 801 S Milwaukee Avenue, Ste 100, Libertyville, IL 60048. The listed phone number is (847) 680-3400.

What is Ob-Gyne Associates Of Libertyville, Sc's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Ob-Gyne Associates Of Libertyville, Sc enrolled in Medicare?

Yes. Ob-Gyne Associates Of Libertyville, Sc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ob-Gyne Associates Of Libertyville, Sc?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians, all in Obstetrics/Gynecology, reassign their Medicare billing to Ob-Gyne Associates Of Libertyville, Sc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 6 practice at this address and 7 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Ob-Gyne Associates Of Libertyville, Sc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D0890861) is associated with this NPI, valid through August 25, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Ob-Gyne Associates Of Libertyville, Sc was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.