Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Catherine Madsen, O.D.
Optometrist in Beltsville, MD · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780838433
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Registry record
Entity type Individual (Type 1)
Name Dr. Catherine Madsen
Credential O.D.
Sex Female
Practice address 10925 Baltimore Ave, Beltsville, MD, 20705
Phone (301) 595-5959
Enumeration date Nov 7, 2008
Last updated in NPPES Nov 7, 2008
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
Is NPI 1780838433 active?
Yes, as of the latest NPPES snapshot, NPI 1780838433 is active (record last updated 2008-11-07).
How do I verify Catherine Madsen's NPI record?
Cross-check NPI 1780838433 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-07.