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Mary Kay Ewing, MD

Anesthesiology Physician in Baltimore, MD · enumerated 2005.

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

National Provider Identifier

1609873348

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Registry record

Entity type Individual (Type 1)
Name Mary Kay Ewing
Credential MD
Sex Female
Practice address 900 Canton Ave, Anesthesia Department, Baltimore, MD, 21229
Phone (410) 368-3045
Enumeration date Jul 7, 2005
Last updated in NPPES Jul 3, 2019

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License D0041059 (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
765011600 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Kay Ewing?
The National Provider Identifier (NPI) for Mary Kay Ewing is 1609873348, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Kay Ewing practice?
The practice location on file with NPPES is in Baltimore, MD. 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 2019-07-03.