Unknown Individual – Internal Medicine Physician, NPI 1891798476

Unknown Individual is a healthcare provider. based in Chicago, Illinois. specializing in Internal Medicine Physician. The NPI Number for Unknown Individual is 1891798476

Main info

Organization
Inactive
Name
Unknown Individual
NPI
1891798476
Phone
(773) 736-4553
Address
5600 W ADDISON ST
Deactivation Date
17 January 2024
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience5
Completeness75
Years active:0State licenses:0Digital endpointsOther names

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Provider Addresses for Unknown Individual

  • 5600, West Addison Street, Martin Luther, Portage Park, Chicago, Jefferson Township, Cook County, Illinois, 60634, United States

    STE 301

    CHICAGO, IL 606344468

    Phone: (773) 736-4553

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60634)

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Reviews

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Frequently asked questions

Can I use this page to confirm Unknown Individual's NPI?
Yes. Unknown Individual is listed with NPI 1891798476 in the public NPI dataset.
Is Unknown Individual excluded from programs when inactive?
The public NPI listing for Unknown Individual is not currently active; confirm directly with the practice or licensing boards.
What is Unknown Individual's specialty?
The listing groups Unknown Individual with Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Does Unknown Individual list a practice location?
Patients near Chicago, Illinois may find Unknown Individual in results; validate coverage separately.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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