NPPES file of Aug 9, 2026

Robert Howard Geller, M.D.

Specialist · Elmhurst, IL

Robert Howard Geller, M.D. is a specialist with a practice address in Elmhurst, Illinois, and NPI 1326068677, issued on Jul 20, 2006. Check the license (Illinois 036055119, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326068677
Name
Robert Howard Geller
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
036055119 IL
Self-reported in NPPES; status is on the state search
Practice location
1200 S York St Ste 4240, Elmhurst, IL 60126
Phone
(708) 450-0462
Enumerated
Jul 20, 2006
Record last updated
Jun 27, 2023
Fax
(708) 450-1591
Medicaid ID
036055119 IL
Medicare enrollment
Enrolled (PECOS I20060921000051); accepts Medicare assignment
Medical or professional school
Chicago College Of Medicine And Surgery, 1976
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest specialist records → All 1,154 in Illinois → Look up another NPI →

Verify Robert Howard Geller in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 036055119    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
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98% fewer Medicare Part D claims than the average specialist in 2024

28 Medicare Part D claims for 21 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 18 claims were for opioids.

  1. Robert Geller28
  2. Specialty average1,380

Most prescribed

  1. Hydrocodone-Acetaminophen16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Robert Howard Geller among 1,154 specialist records in Illinois

Robert Howard Geller, M.D. is one of 1,154 specialist records with a practice address in Illinois. 19% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 58% newer
  • In a Medicare fileYes · 19% of these records are
  • In the CMS Doctors and Clinicians fileYes · 11% of these records are
  • Graduated1976 · median 1988 among the 127 with a school on file
  • Record last updated2023 · 84% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Illinois

There are 1,154 specialist records in Illinois.

All 1,154 in Illinois → Every provider in Elmhurst → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Michelle Knizner, ATCElmhurst, IL 601261386613255
  2. Terri Sendelbach, CALTElmhurst, IL 601261801402938
  3. Estella SpainElmhurst, IL 601261053712521
  4. Gerard Sublette, M.D.Elmhurst, IL 601261326030735
  5. Ellen DialElgin, IL 601231851845499
  6. Sarah Domin, P.T.Elgin, IL 601231790061893
  7. Daniel Hardy, M.D.Elgin, IL 601231659496198
  8. Deepak Khurana, M.D.Elgin, IL 601231427050327

Common questions

What is Robert Howard Geller, M.D.'s NPI number?

Robert Howard Geller, M.D.'s National Provider Identifier (NPI) is 1326068677, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Howard Geller, M.D. located?

The NPPES record lists a practice address at 1200 S York St Ste 4240, Elmhurst, IL, 60126. Phone: (708) 450-0462. Providers update this record themselves, so call before visiting.

How can I verify Robert Howard Geller, M.D.'s license?

NPPES lists Illinois license number 036055119, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Robert Howard Geller, M.D. prescribe under Medicare Part D?

In 2024, Robert Howard Geller, M.D. had 28 Medicare Part D claims for 21 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.