Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Jacobsen
Neurology Physician in Oak Park, IL · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477548477
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Registry record
Entity type Individual (Type 1)
Name John Jacobsen
Sex Male
Practice address 1 Erie Ct, Suite 7020, Oak Park, IL, 60302
Phone (630) 789-2550
Enumeration date Sep 15, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 John Jacobsen practice?
The practice location on file with NPPES is in Oak Park, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Jacobsen?
The National Provider Identifier (NPI) for John Jacobsen is 1477548477, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Nagulapalli Rao Specialist · Oak Park, IL NPI 1508861691 David Springer Ophthalmology Physician · Oak Park, IL NPI 1003811787 Kathleen Dorgan Nephrology Physician · Oak Park, IL NPI 1750383527 Malcolm Deam Infectious Disease Physician · Oak Park, IL NPI 1598750549 Vanessa Klugman Endocrinology, Diabetes & Metabolism Physician · Oak Park, IL NPI 1639169972 Jane Bahk Ophthalmology Physician · Oak Park, IL NPI 1639158314 Michael Barnish Athletic Trainer · Oak Park, IL NPI 1558335489 Kamran Heydarpour Gastroenterology Physician · Oak Park, IL NPI 1093764193
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.