Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria C. Castillo-Catoni, MD

Internal Medicine Physician in Washington, DC · enumerated 2008.

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

National Provider Identifier

1386804136

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Registry record

Entity type Individual (Type 1)

Name Maria C. Castillo-Catoni

Credential MD

Sex Female

Practice address 2311 M St Nw Ste 301, Washington, DC, 20037

Phone (202) 861-0111

Fax (703) 379-3965

Enumeration date Jun 16, 2008

Last updated in NPPES Mar 7, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101249595 (VA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Maria Castillo-Catoni's NPI record?

Cross-check NPI 1386804136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1386804136 active?

Yes, as of the latest NPPES snapshot, NPI 1386804136 is active (record last updated 2025-03-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-07.