Unknown Individual – Sleep Medicine (Internal Medicine) Physician, NPI 1265509400

Unknown Individual is a healthcare provider. based in Oak park, Illinois. specializing in Sleep Medicine (Internal Medicine) Physician. They hold a License No. 036-087956 (IL). The NPI Number for Unknown Individual is 1265509400

Main info

Organization
Inactive
Name
Unknown Individual
NPI
1265509400
Phone
(708) 613-4140
Address
850 MADISON ST STE A
Deactivation Date
26 June 2025
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience24
Completeness75
Years active:0State licenses:1Digital endpointsOther names

Provider Addresses for Unknown Individual

  • 850 MADISON ST STE A

    OAK PARK, IL 603024463

    Phone: (708) 613-4140

    Fax: (708) 434-5641

    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.

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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.

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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 60302)

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Reviews

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Frequently asked questions

What is the standard ID for Unknown Individual in the U.S.?
In the U.S., Unknown Individual is identified by NPI 1265509400.
Should I call the clinic if Unknown Individual is inactive here?
If Unknown Individual looks inactive here, cross-check state licensing and the clinic website.
What services align with Unknown Individual's listing?
Unknown Individual's public classification highlights Sleep Medicine (Internal Medicine) Physician. Clinical services aligned with this taxonomy classification.
What city is tied to Unknown Individual?
The directory associates Unknown Individual with Oak Park, Illinois. Check all listed addresses for suites or satellite offices.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.

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