Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ralph Michael Amedeo, MD

Internal Medicine Physician in Arlington, VA · enumerated 2005.

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

National Provider Identifier

1558369991

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Registry record

Entity type Individual (Type 1)

Name Dr. Ralph Michael Amedeo

Credential MD

Sex Male

Practice address 1715 N George Mason Dr, Suite 306, Arlington, VA, 22205

Phone (703) 276-0630

Fax (703) 527-5241

Enumeration date Jul 11, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians 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
5846358	Medicaid	VA	-

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

Is NPI 1558369991 active?

Yes, as of the latest NPPES snapshot, NPI 1558369991 is active (record last updated 2007-07-08).

How do I verify Ralph Amedeo's NPI record?

Cross-check NPI 1558369991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.