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Allen D Williams, MD

Internal Medicine Physician in Rockford, IL · enumerated 2006 · practices at Swedishamerican Hospital.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1073601324

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Registry record

Entity type Individual (Type 1)
Name Allen D Williams
Credential MD
Sex Male
Practice address 3505 N. Bell School Rd., Rockford, IL, 61114
Phone (779) 696-0300
Enumeration date Oct 11, 2006
Last updated in NPPES Feb 18, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036103011 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
036103011 Medicaid IL -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Allen Williams?
The National Provider Identifier (NPI) for Allen Williams is 1073601324, a Type 1 (individual) record in the CMS NPPES registry.
Where does Allen Williams practice?
The practice location on file with NPPES is in Rockford, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-18.