Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Rosemary Delgado MD., Inc

Specialist in Walnut Creek, CA · enumerated 2007 · authorized official Laura Maes, Office Manager.

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

National Provider Identifier

1720275878

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Registry record

Entity type Organization (Type 2)

Legal business name Rosemary Delgado MD., Inc

Practice address 1776 Ygnacio Valley Rd, Ste 208, Walnut Creek, CA, 94598

Phone (925) 937-9345

Fax (925) 937-1768

Enumeration date Oct 2, 2007

Last updated in NPPES Jun 8, 2021

Taxonomy & classification

174400000X Specialist Other Service Providers · License A455170 (CA) Primary

Authorized official

Name Laura Maes

Title Office Manager

Phone (925) 937-1915

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

Where is Rosemary Delgado MD., Inc located?

The practice location on file with NPPES is in Walnut Creek, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2021-06-08. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-08.