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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. THOMAS ROY WESTERHOFF M. D.
NPI 1598706871
Internal Medicine in Quincy, IL

Active since June 09, 2006
1121 BROADWAY ST, QUINCY, IL 62301(217) 222-5055(217) 222-6536 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Thomas Roy Westerhoff M. D. NPPES

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

DR. THOMAS ROY WESTERHOFF M. D. (NPI 1598706871) is an individual internal medicine provider in Quincy, Illinois and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1598706871
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. THOMAS ROY WESTERHOFFCredential: M. D.
Location Address1121 BROADWAY STQuincy, IL 62301-2809
Mailing Address1121 Broadway StQuincy, IL 62301-2809 · (217) 222-5055 · Fax (217) 222-6536
Phone(217) 222-5055
Fax(217) 222-6536
Sole ProprietorNo
Enumeration DateJune 9, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1598706871 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1121 BROADWAY ST, Quincy, IL 62301
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Other Identifiers 3

Medicaid00410IL
Other37107361862301A001IL · Champus Id
Other0000100276IL · Blueshield Id

Other Providers at the Same Location NPPES

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

THOMAS R WESTERHOFF M.D P.C.
Internal Medicine
1121 BROADWAY ST
QUINCY, IL 62301
Adams County (217) 222-5055

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 Thomas Westerhoff's NPI number?

The NPI number for Thomas Westerhoff is 1598706871. It was assigned to this individual provider in the NPPES registry on June 9, 2006.

Where is Thomas Westerhoff located?

Thomas Westerhoff practices at 1121 Broadway St, Quincy, IL 62301. The listed phone number is (217) 222-5055.

What is Thomas Westerhoff's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Thomas Westerhoff was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.