Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Dasmarinas

Hospitalist Physician in Walnut Creek, CA · enumerated 2023.

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

National Provider Identifier

1124720388

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Cassandra Dasmarinas

Sex Female

Practice address 1601 Ygnacio Valley Rd, Walnut Creek, CA, 94598

Phone (925) 947-3393

Enumeration date Mar 21, 2023

Last updated in NPPES Aug 6, 2026

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 20A25401 (CA) Primary

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 Cassandra Dasmarinas's NPI record?

Cross-check NPI 1124720388 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124720388 active?

Yes, as of the latest NPPES snapshot, NPI 1124720388 is active (record last updated 2026-08-06).

Other providers at this practice address

Browse all →

Eric Buadu Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA NPI 1316932965 Sierra Surgicenter Ambulatory Surgical Clinic/Center · Walnut Creek, CA NPI 1053307454 Molly Honegger Diagnostic Radiology Physician · Walnut Creek, CA NPI 1780648766 Stacie Bennett Neonatal-Perinatal Medicine Physician · Walnut Creek, CA NPI 1982660080 Jennifer Levy Neonatal-Perinatal Medicine Physician · Walnut Creek, CA NPI 1619934692 Andreux Chernne Hospitalist Physician · Walnut Creek, CA NPI 1578520003 John Muir Magnetic Imaging Center Diagnostic Radiology Physician · Walnut Creek, CA NPI 1235184110 Kirkman Beckwith Anesthesiology Physician · Walnut Creek, CA NPI 1073551057

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