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Dr. Ruth S Horowitz, MD

Endocrinology, Diabetes & Metabolism Physician in Timonium, MD · enumerated 2005.

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

National Provider Identifier

1003811423

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Registry record

Entity type Individual (Type 1)
Name Dr. Ruth S Horowitz
Credential MD
Sex Female
Practice address 1 Texas Station Ct, Timonium, MD, 21093
Phone (410) 828-7417
Fax (410) 828-4695
Enumeration date Jun 14, 2005
Last updated in NPPES May 9, 2025

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License D45811 (MD) 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
053771300 Medicaid MD -
127701400 Medicaid MD -

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

Where does Ruth Horowitz practice?
The practice location on file with NPPES is in Timonium, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ruth Horowitz?
The National Provider Identifier (NPI) for Ruth Horowitz is 1003811423, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-09.