ALAN R LEFF (MD) – Pulmonary Disease Physician, NPI 1023170578

ALAN R LEFF (MD) is a healthcare provider. based in Chicago, Illinois. specializing in Pulmonary Disease Physician. They hold the professional credentials MD. The NPI Number for ALAN R LEFF (MD) is 1023170578

Main info

Male
Name
ALAN R LEFF (MD)
NPI
1023170578
Phone
Not provided
Address
5841 S MARYLAND AVE # MC1099
Enumeration Date
14 December 2006
Last Update Date
8 July 2007
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience43
Completeness75
Years active:19State licenses:0Digital endpointsOther names

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Provider Addresses for ALAN R LEFF (MD)

  • 5841 S MARYLAND AVE # MC1099

    CHICAGO, IL 606371447

    Phone:

    Type: Mailing

  • Harvester Drive, Burr Ridge, DuPage County, Illinois, 65027, United States

    BURR RIDGE, IL 605276686

    Phone: (773) 834-4064

    Type: Location

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 60637)

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Reviews

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Frequently asked questions

What is the standard ID for ALAN R LEFF (MD) in the U.S.?
In the U.S., ALAN R LEFF (MD) is identified by NPI 1023170578.
Does the public listing show ALAN R LEFF (MD) as active?
ALAN R LEFF (MD)'s NPI record reflects an active status in NPPES.
What services align with ALAN R LEFF (MD)'s listing?
ALAN R LEFF (MD)'s public classification highlights Pulmonary Disease Physician. Clinical services aligned with this taxonomy classification.
Which community is linked to ALAN R LEFF (MD)?
ALAN R LEFF (MD) shows a connection to Chicago, Illinois in registry-derived data.
Why is information missing for ALAN R LEFF (MD)?
Providers choose how much contact data to publish. Missing fields do not mean the profile is fake.

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