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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mary Karvounis, D.D.S.

Dentist in Gambrills, MD · enumerated 2013.

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

National Provider Identifier

1922447192

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Registry record

Entity type Individual (Type 1)
Name Dr. Mary Karvounis
Credential D.D.S.
Sex Female
Practice address Gambrills, MD, 21054
Phone (410) 721-7020
Fax (410) 721-1970
Enumeration date Jun 20, 2013
Last updated in NPPES Oct 1, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License DEN1001302 (DC) Secondary
122300000X Dentist Dental Providers · License 15537 (MD) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

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Frequently asked questions

What is the NPI number for Mary Karvounis?
The National Provider Identifier (NPI) for Mary Karvounis is 1922447192, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Karvounis practice?
The practice location on file with NPPES is in Gambrills, 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 2020-10-01.