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Dr. Ann Katherine Williams MD, M.D.

Ophthalmology Physician in Hammond, IN · enumerated 2005.

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

National Provider Identifier

1043216732

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Registry record

Entity type Individual (Type 1)
Name Dr. Ann Katherine Williams MD
Credential M.D.
Sex Female
Practice address 6850 Hohman Ave, Hammond, IN, 46324
Phone (219) 931-7509
Enumeration date Jun 27, 2005
Last updated in NPPES Mar 6, 2025

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036068962 (IL) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 01039204A (IN) 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
100465760 Medicaid IN -

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 Ann Williams MD?
The National Provider Identifier (NPI) for Ann Williams MD is 1043216732, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ann Williams MD practice?
The practice location on file with NPPES is in Hammond, IN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-06.