NPPES file of Aug 9, 2026

Robert L. Barclay, M.D.

Gastroenterology Physician · Rockford, IL

Robert L. Barclay, M.D. is a gastroenterology physician with a practice address in Rockford, Illinois, and NPI 1073509337, issued on Sep 22, 2005. Check the license (Illinois 36104379, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1073509337
Name
Robert L. Barclay
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
36104379 IL
C-205058 CA
Self-reported in NPPES; status is on the state search
Practice location
401 Roxbury RD, Rockford, IL 61107
Phone
(815) 397-7340
Enumerated
Sep 22, 2005
Record last updated
Oct 30, 2025
Fax
(815) 484-7864
Medicaid ID
036104379 IL
Medicare enrollment
Enrolled (PECOS I20260324001996); accepts Medicare assignment
Medical or professional school
University Of Toronto, Faculty Of Medicine, 1995
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 gastroenterology physician records → All 887 in Illinois → Look up another NPI →

Also registered at 401 Roxbury RD

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

  1. Nabil Baddour, D.O., MPHGastroenterology Physician1184018178
  2. Hasan Bader, M.D.Gastroenterology Physician1275989998
  3. William Baskin, M.D.Gastroenterology Physician1063408342
  4. Lindsay BennettNurse Practitioner1578439865
  5. Jessica Dean, APNFamily Nurse Practitioner1609622695
  6. Janelle Defilippis, APNFamily Nurse Practitioner1730426230

Verify Robert L. Barclay 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 36104379    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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Bills Medicare through one group practice

  1. Adventist Health Physicians NetworkArroyo Grande, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Robert L. Barclay among 887 gastroenterology physician records in Illinois

Robert L. Barclay, M.D. is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated1995 · median 2003 among the 643 with a school on file
  • Record last updated2025 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Illinois

There are 887 gastroenterology physician records in Illinois.

All 887 in Illinois → Every provider in Rockford → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. William Baskin, M.D.Rockford, IL 611071063408342
  2. John Deguide, M.D.Rockford, IL 611071538156948
  3. James Frakes, M.D., M.S.Rockford, IL 611071295722569
  4. Roger Greenlaw, M.D.Rockford, IL 611071699761890
  5. Steven Ikenberry, M.D.Rockford, IL 611071336135540
  6. Michael Manley, M.D.Rockford, IL 611071346236569
  7. S Moore, M.D.Rockford, IL 611071841286754
  8. Kevin Peifer, M.D.Rockford, IL 611071699751446

Common questions

What is Robert L. Barclay, M.D.'s NPI number?

Robert L. Barclay, M.D.'s National Provider Identifier (NPI) is 1073509337, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robert L. Barclay, M.D. located?

The NPPES record lists a practice address at 401 Roxbury RD, Rockford, IL, 61107. Phone: (815) 397-7340. Providers update this record themselves, so call before visiting.

How can I verify Robert L. Barclay, M.D.'s license?

NPPES lists Illinois license number 36104379, 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. 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.