Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marianne Gonzales De Castro

Occupational Therapist in Gaithersburg, MD · enumerated 2016.

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

National Provider Identifier

1649713736

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Marianne Gonzales De Castro

Sex Female

Practice address 301 Russell Ave, Gaithersburg, MD, 20877

Phone (301) 216-4247

Enumeration date Nov 22, 2016

Last updated in NPPES Mar 7, 2019

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 07548 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
1447657507	Other	MD	NPI TYPE 2 (ORGANIZATION NPI)
4374045-00	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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Marianne De Castro's NPI record?

Cross-check NPI 1649713736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649713736 active?

Yes, as of the latest NPPES snapshot, NPI 1649713736 is active (record last updated 2019-03-07).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-07.