Igor Naryzhny, D.O.
Gastroenterology · Internal Medicine (CMS) · Libertyville, IL
At a glance
825 S Milwaukee Ave, Libertyville, IL 60048-3218
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Nov 21, 2024. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
825 S Milwaukee AveLibertyville, IL 60048-3218
Additional reported practice locations
1775 Dempster StPark Ridge, IL 600681143
Phone: 1234567890
Education & affiliations
- Medical / professional school
- Midwestern University, Chicago College Of Osteopathic Med
- Graduation year
- 2009
- CMS specialties
- Gastroenterology · Internal Medicine
Practice groups
Reported hospital affiliations
- Advocate Condell Medical Center Libertyville, IL
- Advocate Good Shepherd Hospital Barrington, IL
- Advocate Illinois Masonic Medical Center Chicago, IL
- Advocate Lutheran General Hospital Park Ridge, IL
- Northshore University Healthsystem - Evanston Hospital Evanston, IL
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 108 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 134 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $231.52 |
Reporting companies
| Company | Amount |
|---|---|
| TAKEDA PHARMACEUTICALS U.S.A., INC. | $135.18 |
| ABBVIE INC. | $54.67 |
| JANSSEN BIOTECH, INC. | $41.67 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Gastroenterology · Internal Medicine (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Jun 22, 2009
- Record updated
- Nov 21, 2024
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- D.O.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: 036-128612 IL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
825 S Milwaukee AveLibertyville, IL 60048-3218
- Phone
- (847) 634-1766
Mailing address
29373 NETWORK PLCHICAGO, IL 606731293
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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