DR. JENNIFER LOUISE SCHAEFER M.D.
NPI 1669468484
Obstetrics & Gynecology in Libertyville, IL

Q: What is Jennifer Schaefer's NPI number?

The NPI number for Jennifer Schaefer is 1669468484. It was assigned to this individual provider in the NPPES registry on September 27, 2005. The provider is also known as Jennifer Fronczak.

Q: What is Jennifer Schaefer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Jennifer Schaefer was last updated on December 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.

Active since September 27, 2005PECOS EnrolledAccepts Medicare Assignment

801 S MILWAUKEE AVE, SUITE 100, LIBERTYVILLE, IL 60048(847) 680-3400(847) 680-3486 Get Directions Write a Review

NPPES record last updated: December 28, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 28, 2022, Dec 9, 2021 (2 updates tracked since 2021).

On this page

About Dr. Jennifer Louise Schaefer M.d. NPPES

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

DR. JENNIFER LOUISE SCHAEFER M.D. (NPI 1669468484) is an individual obstetrics & gynecology provider in Libertyville, Illinois, licensed in Illinois (036095549) and active in the NPI registry since September 2005. She is enrolled in Medicare PECOS, is affiliated with Northwestern Lake Forest Hospital, and is a graduate of Rush Medical College Of Rush University (1994).

NPPES Registry Identity

NPI1669468484

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. JENNIFER LOUISE SCHAEFERCredential: M.D.

Location Address801 S MILWAUKEE AVE, SUITE 100Libertyville, IL 60048-3204

Mailing Address801 S Milwaukee Ave, Suite 100Libertyville, IL 60048-3204 · (847) 680-3400 · Fax (847) 680-3486

Phone(847) 680-3400

Fax(847) 680-3486

Sole ProprietorNo

Medical School CMSRush Medical College Of Rush UniversityGraduated 1994

Enumeration DateSeptember 27, 2005

Last NPPES UpdateDecember 28, 20222 updates tracked since enumeration

NPPES CertifiedDecember 28, 2022

✔ NPI 1669468484 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in IL · 036095549

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 AVE, Libertyville, IL 60048

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Other Names 1

Former Name (1)Jennifer Fronczak

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Jennifer Louise Schaefer M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062594229

PECOS Enrollment IDI20100422000990

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Jennifer Schaefer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ob-Gyne Associates Of Libertyville, Sc

Same address

Obstetrics & Gynecology

801 S MILWAUKEE AVENUE, STE 100
Libertyville, IL 60048

Reassigned Medicare billing, Illinois enrollment
7 clinicians in this Medicare group

NPI 1457563272 (847) 680-3400

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

84 services78 patients

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101

This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.

28 services28 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

14 services12 patients

Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091

A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.

13 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140130

Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County

Emergency services Birthing friendly

Advocate Condell Medical Center

Acute Care Hospitals · Libertyville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140202

Location801 S Milwaukee AveLibertyville, IL 60048 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60048 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$137.43 typical visit price

range $59.81 – $181.38

Typical copayment $34.35 (range $14.95 – $45.34)

Most-billed visit code 99204

Established Patient

$74.38 typical visit price

range $19.15 – $147.12

Typical copayment $18.59 (range $4.78 – $36.78)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ANNA MAE STEGEMANN D.O.

Anesthesiology

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 990-2135

MAUREEN FRITZ DPT

Physical Therapist

801 S MILWAUKEE AVE, REHAB DEPARTMENT
LIBERTYVILLE, IL 60048

Lake County (847) 990-5350

DR. DEAN JOSEPH CONTERATO MD

Radiology (Radiation Oncology)

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 990-5910

GLORIA BOLAND BSN, RN, CDCES

Registered Nurse (Diabetes Educator)

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 990-5579

CONDELL MEDICAL CENTER

General Acute Care Hospital

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 362-2900

MARINA LYUBKIN

Nurse Practitioner

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 362-2900

IHC-LIBERTYVILLE EMERGENCY PHYSICIANS, LLC

Emergency Medicine

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (414) 290-6718

DR. DIMITRIOS T. MOUGOLIAS M.D.

Emergency Medicine

801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048

Lake County (847) 990-2075

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 Jennifer Schaefer's NPI number?

The NPI number for Jennifer Schaefer is 1669468484. It was assigned to this individual provider in the NPPES registry on September 27, 2005. The provider is also known as Jennifer Fronczak.

Where is Jennifer Schaefer located?

Jennifer Schaefer practices at 801 S Milwaukee Ave Suite 100, Libertyville, IL 60048. The listed phone number is (847) 680-3400.

What is Jennifer Schaefer's specialty?

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

Is Jennifer Schaefer enrolled in Medicare?

Yes. Jennifer Schaefer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Jennifer Schaefer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Schaefer reassigns Medicare benefits to Ob-Gyne Associates Of Libertyville, Sc (Libertyville, IL). The 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 Jennifer Schaefer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jennifer Schaefer accept?

Health plans from UnitedHealthcare list Jennifer Schaefer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Jennifer Schaefer affiliated with any hospitals?

According to CMS data, Jennifer Schaefer is affiliated with Northwestern Lake Forest Hospital and Advocate Condell Medical Center.

When was this NPI record last updated?

The NPPES record for Jennifer Schaefer was last updated on December 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.