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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Frekko Kilavos, M.D.

Internal Medicine Physician in Gaithersburg, MD · enumerated 2006 · practices at Frekko Primary Care LLC.

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

National Provider Identifier

1609841188

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Registry record

Entity type Individual (Type 1)
Name Dr. Mary Frekko Kilavos
Credential M.D.
Sex Female
Practice address 818 West Diamond Avenue, Ste 130, Gaithersburg, MD, 20878
Phone (301) 948-8780
Fax (301) 519-9093
Enumeration date Feb 20, 2006
Last updated in NPPES Apr 21, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD046987 (DC) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0062800 (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
492066 Other MD MEDICARE

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 specialty is Mary Kilavos?
Mary Kilavos is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-21.