DR. GEORGE R HVOSTIK MD
NPI 1023015021
Internal Medicine - Nephrology in Libertyville, IL
About Dr. George R Hvostik Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GEORGE R HVOSTIK MD (NPI 1023015021) is an individual nephrology provider in Libertyville, Illinois, licensed in Illinois (036071912) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through May 31, 2028, and is affiliated with Northshore University Healthsystem - Evanston Hospital.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. George R Hvostik 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.
Medicare Billing Reassignment
Medicare enrollment records show George Hvostik reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Libertyville, IL 60048
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: George Hvostik MD Sc
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 14D2113850
Dr George Hvostik · Libertyville, ILAreas of Expertise CMS Part B claims 12
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northshore University Healthsystem - Evanston Hospital
Acute Care Hospitals · Evanston, ILNorthwestern Lake Forest Hospital
Acute Care Hospitals · Lake Forest, ILAdvocate Condell Medical Center
Acute Care Hospitals · Libertyville, ILNorthwest Community Hospital 1
Acute Care Hospitals · Arlington Heights, ILNorthwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician 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.
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.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LIBERTYVILLE, IL 60048
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 George Hvostik's NPI number?
The NPI number for George Hvostik is 1023015021. It was assigned to this individual provider in the NPPES registry on July 5, 2005.
Where is George Hvostik located?
George Hvostik practices at 1860 W Winchester Rd Ste 107B, Libertyville, IL 60048. The listed phone number is (847) 996-0836.
What is George Hvostik's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is George Hvostik enrolled in Medicare?
Yes. George Hvostik 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 George Hvostik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), George Hvostik reassigns Medicare benefits to George Hvostik, MD, S.C. (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 George Hvostik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Does George Hvostik hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2113850) is associated with this NPI, valid through May 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
Is George Hvostik affiliated with any hospitals?
According to CMS data, George Hvostik is affiliated with Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital, Advocate Condell Medical Center, Northwest Community Hospital 1 and Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for George Hvostik was last updated on January 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. George R Hvostik, MD · NPI 1023015021
Nephrology physician in Libertyville, Illinois. Individual provider, active in the CMS NPPES registry since July 5, 2005.
## Identity
- **NPI:** 1023015021 (Entity type: Individual)
- **Enumerated:** July 5, 2005
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 036071912 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1860 W WINCHESTER RD STE 107B, Libertyville, IL 60048-5312
- **Phone:** (847) 996-0836 · **Fax:** (847) 996-6278
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** George Hvostik, MD, S.C. (NPI 1255664066, Libertyville, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 1984
## Record status
- **NPPES last updated:** January 21, 2022
- **Other identifiers:** Other 110059869 (IL); Other C30486 (IL); Other 1616108 (IL)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1023015021) · Data from the CMS NPPES public registry.