1. Home
  2. Directory
  3. Illinois
  4. Naperville
  5. Obstetrics Gynecology
  6. NPI Profile

DR. KAREN L. DRUZAK MD
NPI 1861591612
Obstetrics & Gynecology in Naperville, IL

Active since September 21, 2006PECOS EnrolledAccepts Medicare Assignment
91.35/100
CMS Quality Rating
10 W MARTIN AVE # 100, NAPERVILLE, IL 60540(630) 369-7700(630) 369-7705 Get Directions Write a Review

NPPES record last updated: February 17, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Karen L. Druzak Md NPPES

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

DR. KAREN L. DRUZAK MD (NPI 1861591612) is an individual obstetrics & gynecology provider in Naperville, Illinois, licensed in Illinois (036076851) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with Copley Memorial Hospital, and is a graduate of University Of Louisville School Of Medicine (1985).

NPPES Registry Identity

NPI1861591612
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. KAREN L. DRUZAKCredential: MD
Location Address10 W MARTIN AVE # 100Naperville, IL 60540-6535
Mailing Address10 W Martin Ave # 100Naperville, IL 60540-6535 · (630) 369-7700 · Fax (630) 369-7705
Phone(630) 369-7700
Fax(630) 369-7705
Sole ProprietorNo
Medical School CMSUniversity Of Louisville School Of MedicineGraduated 1985
Enumeration DateSeptember 21, 2006
Last NPPES UpdateFebruary 17, 2021
NPPES CertifiedFebruary 17, 2021
✔ NPI 1861591612 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 · 036076851
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.
10 W MARTIN AVE # 100, Naperville, IL 60540
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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. Karen L. Druzak Md 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 ID8325062532
PECOS Enrollment IDI20100809001095
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 Reassignments

2

Medicare enrollment records show Karen Druzak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Edward Health Ventures
Same address
Surgery
10 MARTIN AVE, STE 225
Naperville, IL 60540
  • Reassigned Medicare billing, Illinois enrollment
  • 561 clinicians in this Medicare group
NPI 1215367099 (630) 355-5633
Endeavor Health Medical Group
32 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235

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 2

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.

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.
52 services52 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Copley Memorial Hospital

Acute Care Hospitals · Aurora, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140029
Location2000 Ogden AvenueAurora, IL 60504 · Kane County
Emergency services Birthing friendly

Edward Hospital

Acute Care Hospitals · Naperville, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140231
Location801 South WashingtonNaperville, IL 60540 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.35/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.71
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 4

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

DR. ELENA PIROZHNIK D.O.
Obstetrics & Gynecology
10 W MARTIN AVE # 100
NAPERVILLE, IL 60540
Dupage County (630) 369-7700
DR. ANDREW K. BADOWSKI MD
Obstetrics & Gynecology
10 W MARTIN AVE # 100
NAPERVILLE, IL 60540
Dupage County (630) 369-7700
DR. JULIE R. JENSEN MD
Obstetrics & Gynecology
10 W MARTIN AVE # 100
NAPERVILLE, IL 60540
Dupage County (630) 369-7700
BADOWSKI, DRUZAK & JENSEN, MD'S S.C.
Obstetrics & Gynecology
10 W MARTIN AVE # 100
NAPERVILLE, IL 60540
Dupage County (630) 369-7700

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 Karen Druzak's NPI number?

The NPI number for Karen Druzak is 1861591612. It was assigned to this individual provider in the NPPES registry on September 21, 2006.

Where is Karen Druzak located?

Karen Druzak practices at 10 W Martin Ave # 100, Naperville, IL 60540. The listed phone number is (630) 369-7700.

What is Karen Druzak's specialty?

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

Is Karen Druzak enrolled in Medicare?

Yes. Karen Druzak 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 organizations bill Medicare for Karen Druzak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Druzak reassigns Medicare benefits to 2 organizations: Edward Health Ventures (Naperville, IL) and Endeavor Health Medical Group (Evanston, IL). Each 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 Karen Druzak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Druzak accept?

Health plans from Oscar Health list Karen Druzak 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 Karen Druzak affiliated with any hospitals?

According to CMS data, Karen Druzak is affiliated with Copley Memorial Hospital and Edward Hospital.

When was this NPI record last updated?

The NPPES record for Karen Druzak was last updated on February 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.