Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Aaron Gurfinchel, MD
Nephrology Physician in Joliet, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639392939
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Registry record
Entity type Individual (Type 1)
Name Dr. Aaron Gurfinchel
Credential MD
Sex Male
Practice address 3100 Theodore Street, Suite 201, Joliet, IL, 60435
Phone (815) 744-5550
Fax (815) 744-5428
Enumeration date Apr 11, 2007
Last updated in NPPES Apr 28, 2025
Taxonomy & licenses
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036-103677 (IL) Secondary
207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 036103677 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036103677 | Medicaid | IL | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Aaron Gurfinchel practice?
The practice location on file with NPPES is in Joliet, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Aaron Gurfinchel?
The National Provider Identifier (NPI) for Aaron Gurfinchel is 1639392939, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-28.