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ROBERT L BARCLAY M.D.
NPI 1073509337
Internal Medicine - Gastroenterology in Rockford, IL

Active since September 22, 2005PECOS EnrolledAccepts Medicare Assignment
401 ROXBURY RD, ROCKFORD, IL 61107(815) 397-7340(815) 484-7864 Get Directions Write a Review

NPPES record last updated: October 30, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Robert L Barclay M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROBERT L BARCLAY M.D. (NPI 1073509337) is an individual gastroenterology provider in Rockford, Illinois, licensed in California (C-205058) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Toronto, Faculty Of Medicine (1995).

NPPES Registry Identity

NPI1073509337
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameROBERT L BARCLAYCredential: M.D.
Location Address401 ROXBURY RDRockford, IL 61107-5075
Mailing Address401 Roxbury RdRockford, IL 61107-5075 · (815) 397-7340 · Fax (815) 397-2156
Phone(815) 397-7340
Fax(815) 484-7864
Sole ProprietorNo
Medical School CMSUniversity Of Toronto, Faculty Of MedicineGraduated 1995
Enumeration DateSeptember 22, 2005
Last NPPES UpdateOctober 30, 2025
NPPES CertifiedOctober 30, 2025
✔ NPI 1073509337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in CA · C-205058✔ Licensed in IL · 36104379
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
401 ROXBURY RD, Rockford, IL 61107
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Other Identifiers 1

Medicaid036104379IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Robert L Barclay M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305821323
PECOS Enrollment IDI20260324001996
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Robert Barclay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Adventist Health Physicians Network
1,651 mi
Family Medicine
2559 W ROSAMOND BLVD STE D
Rosamond, CA 93560
  • Reassigned Medicare billing, California enrollment
  • 678 clinicians in this Medicare group
NPI 1609633973 (661) 241-6700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61107 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

WILLIAM N BASKIN M.D.
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
MARK T SHIELS M.D.
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
DR. SUMEET K. TEWANI MD
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
DR. NABIL DAVID BADDOUR D.O., MPH
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
AMANDA SHARRELL THOMAS-LEINDECKER APN-CRNA
Nurse Anesthetist, Certified Registered
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
HASAN BADER M.D.
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 381-7340
JAMES T FRAKES M.D., M.S.
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340
STEVEN O IKENBERRY M.D.
Internal Medicine (Gastroenterology)
401 ROXBURY RD
ROCKFORD, IL 61107
Winnebago County (815) 397-7340

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert Barclay's NPI number?

The NPI number for Robert Barclay is 1073509337. It was assigned to this individual provider in the NPPES registry on September 22, 2005.

Where is Robert Barclay located?

Robert Barclay practices at 401 Roxbury Rd, Rockford, IL 61107. The listed phone number is (815) 397-7340.

What is Robert Barclay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Robert Barclay enrolled in Medicare?

Yes. Robert Barclay is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Robert Barclay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Barclay reassigns Medicare benefits to Adventist Health Physicians Network (Rosamond, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert Barclay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Robert Barclay was last updated on October 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.