NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Beret Ann Casey, M.D.

Endocrinology, Diabetes & Metabolism Physician in Ashland, WI · enumerated 2008 · practices at The Duluth Clinic, Ltd.

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

National Provider Identifier

1124289483

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Beret Ann Casey
Credential M.D.
Sex Female
Practice address 1615 Maple Ln Ste 1, Ashland, WI, 54806
Enumeration date Jun 19, 2008
Last updated in NPPES May 3, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 58314 (MN) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 62746 (WI) Secondary
207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 62746 (WI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Beret Casey practice?
The practice location on file with NPPES is in Ashland, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Beret Casey?
The National Provider Identifier (NPI) for Beret Casey is 1124289483, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-03.