NPPES file of Aug 9, 2026

Fred Geisler, M.D.

Neurological Surgery Physician · Aurora, IL

Fred Geisler, M.D. is a neurological surgery physician with a practice address in Aurora, Illinois, and NPI 1912993403, issued on Sep 21, 2005. Check the license (Illinois 036-085216, 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
1912993403
Name
Fred Geisler
Credential
M.D.
Primary taxonomy
Neurological Surgery Physician 207T00000X
License number
036-085216 IL
Self-reported in NPPES; status is on the state search
Practice location
2020 Ogden Ave, Aurora, IL 60504
Phone
(630) 236-4303
Enumerated
Sep 21, 2005
Record last updated
Jun 26, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(630) 236-4317
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 neurological surgery physician records → All 375 in Illinois → Look up another NPI →

Also registered at 2020 Ogden Ave

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

  1. Gina Bakiares-Santori, DPMPodiatrist1700949856
  2. Karen Barr, APN, CNMAdvanced Practice Midwife1003902123
  3. Pradeep Bhatia, M.D.Neurology Physician1104834209
  4. Elizabeth Boyman, DOFamily Medicine Physician1912749821
  5. Gregorio Carpio, M.D.Obstetrics & Gynecology Physician1508850405
  6. Jennifer Cunningham, PAPhysician Assistant1275644817

Verify Fred Geisler 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 036-085216    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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Fred Geisler among 375 neurological surgery physician records in Illinois

Fred Geisler, M.D. is one of 375 neurological surgery physician records with a practice address in Illinois. 77% 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileNo · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 53% of these records are
  • Record last updated2014 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurological Surgery Physician providers in Illinois

There are 375 neurological surgery physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 375 in Illinois → Every provider in Aurora → Neurological Surgery Physician nationwide →

The 8 neurological surgery physician records with the nearest ZIP codes

  1. Kevin Kelly, MDAurora, IL 605041356305882
  2. Dmitry Ruban, MDAurora, IL 605041720279573
  3. Raed Abusuwwa, D.O.Downers Grove, IL 605151861701351
  4. Egon Doppenberg, MDDowners Grove, IL 605151083602551
  5. Krishna Joshi, MDDowners Grove, IL 605151376067272
  6. Stavros Maltezos, M.D.Downers Grove, IL 605151902987076
  7. Michael Wemhoff, MDDowners Grove, IL 605151083906838
  8. Abhiraj Bhimani, M.D.Hinsdale, IL 605211821559196

Common questions

What is Fred Geisler, M.D.'s NPI number?

Fred Geisler, M.D.'s National Provider Identifier (NPI) is 1912993403, issued on Sep 21, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Fred Geisler, M.D. located?

The NPPES record lists a practice address at 2020 Ogden Ave, Aurora, IL, 60504. Phone: (630) 236-4303. Providers update this record themselves, so call before visiting.

How can I verify Fred Geisler, M.D.'s license?

NPPES lists Illinois license number 036-085216, 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.