NPPES file of Aug 9, 2026

Glenn Alden Harrison, M.D.

Geriatric Medicine (Internal Medicine) Physician · Chicago, IL

Glenn Alden Harrison, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1316076946, issued on Mar 2, 2007. Check the license (Illinois 036091413, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316076946
Name
Glenn Alden Harrison
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
036091413 IL
Self-reported in NPPES; status is on the state search
Practice location
3319 N Elston Ave, Chicago, IL 60618
Phone
(773) 751-7200
Enumerated
Mar 2, 2007
Record last updated
Feb 2, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(773) 583-4295
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 179 in Illinois → Look up another NPI →

Also registered at 3319 N Elston Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

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  4. Brian Bacardi, DPMPrimary Podiatric Medicine Podiatrist1073674081
  5. Madison Baginski, OTD, OTR/LOccupational Therapist1710810916
  6. Pamela Bejarano, MSWSocial Worker1588413843

Verify Glenn Alden Harrison in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036091413    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Glenn Alden Harrison among 179 geriatric medicine (internal medicine) physician records in Illinois

Glenn Alden Harrison, M.D. is one of 179 geriatric medicine (internal medicine) physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 60% of them.

  • NPI issued2007 · 60% of these records are older, 25% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 42% of these records are
  • Record last updated2017 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in Illinois

There are 179 geriatric medicine (internal medicine) physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 179 in Illinois → Every provider in Chicago → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Amelia Conte-Russian, M.D.Chicago, IL 606181851338792
  2. James Fenoglio, MDChicago, IL 606181063690469
  3. Nandana Jasti, M.D.Chicago, IL 606181770773871
  4. Banio Koroma, MDChicago, IL 606181962443739
  5. James Miller, M.DChicago, IL 606181861503468
  6. Ewa Nowak, M.D.Chicago, IL 606181114113271
  7. Geraldine LunaChicago, IL 606171275735706
  8. Robert Alter, M.D.Chicago, IL 606161821064585

Common questions

What is Glenn Alden Harrison, M.D.'s NPI number?

Glenn Alden Harrison, M.D.'s National Provider Identifier (NPI) is 1316076946, issued on Mar 2, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Glenn Alden Harrison, M.D. located?

The NPPES record lists a practice address at 3319 N Elston Ave, Chicago, IL, 60618. Phone: (773) 751-7200. Providers update this record themselves, so call before visiting.

How can I verify Glenn Alden Harrison, M.D.'s license?

NPPES lists Illinois license number 036091413, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.