MARK T SHIELS (M.D.) – Gastroenterology Physician, NPI 1104812023

MARK T SHIELS (M.D.) is a healthcare provider. based in Rockford, Illinois. specializing in Gastroenterology Physician. They hold the professional credentials M.D.. They hold a License No. 36072619 (IL). The NPI Number for MARK T SHIELS (M.D.) is 1104812023

Main info

Male
Name
MARK T SHIELS (M.D.)
NPI
1104812023
Phone
(815) 397-7340
Address
401 ROXBURY RD
Enumeration Date
26 September 2005
Last Update Date
6 September 2007
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

Loading map...

Provider Addresses for MARK T SHIELS (M.D.)

  • 401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States

    ROCKFORD, IL 611075075

    Phone: (815) 397-7340

    Fax: (815) 397-2156

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 61107)

Loading plans...

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

How is MARK T SHIELS (M.D.) identified in CMS data?
CMS-hosted NPPES data lists MARK T SHIELS (M.D.) with NPI 1104812023.
Is MARK T SHIELS (M.D.) still practicing?
MARK T SHIELS (M.D.) is currently listed as active in the public NPI registry.
What is MARK T SHIELS (M.D.)'s specialty?
The listing groups MARK T SHIELS (M.D.) with Gastroenterology Physician. Clinical services aligned with this taxonomy classification.
Where is MARK T SHIELS (M.D.) based?
MARK T SHIELS (M.D.) is tied to Rockford, Illinois in the data we show; additional addresses may exist on the full record.
Why does MARK T SHIELS (M.D.) have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

Similar Providers

DR. BRAD ALAN BOWYER (MD)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1205821089

ROBERT L BARCLAY (M.D.)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1073509337

ROGER L GREENLAW (M.D.)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1699761890
Rockford Gastroenterology, 401, Roxbury Road, Rockford, Winnebago County, Illinois, 61107, United States
NPI: 1336135540

MICHAEL J MANLEY (M.D.)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1346236569
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1063408342

S CHRISTOPHER MOORE (M.D.)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1841286754

JOSEPH J VICARI (M.D.)

Gastroenterology Physician
401, Roxbury Road, Rockford, Rockford Township, Winnebago County, Illinois, 61107, United States
NPI: 1912993858