Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gemma Melanie Armstrong, D.O.

Family Medicine Physician in Havre De Grace, MD · enumerated 2008.

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

National Provider Identifier

1306003652

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Registry record

Entity type Individual (Type 1)

Name Gemma Melanie Armstrong

Credential D.O.

Sex Female

Practice address 253 Lewis Ln, Suite 202, Havre De Grace, MD, 21078

Phone (443) 502-7060

Fax (410) 378-9922

Enumeration date May 22, 2008

Last updated in NPPES Dec 15, 2015

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License H77365 (MD) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
102577005	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

How do I verify Gemma Armstrong's NPI record?

Cross-check NPI 1306003652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1306003652 active?

Yes, as of the latest NPPES snapshot, NPI 1306003652 is active (record last updated 2015-12-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-15.