Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hannah De Los Santos

Pediatrics Physician in Walnut Creek, CA · enumerated 2006 · practices at John Muir Physician Network.

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

National Provider Identifier

1750477162

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Registry record

Entity type Individual (Type 1)

Name Dr. Hannah De Los Santos

Sex Female

Practice address 1450 Treat Blvd, Suite 160, Walnut Creek, CA, 94597

Phone (925) 296-9788

Fax (925) 296-9092

Enumeration date Oct 4, 2006

Last updated in NPPES Oct 9, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A065270 (CA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A65270 (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

What is the NPI number for Hannah De Los Santos?

The National Provider Identifier (NPI) for Hannah De Los Santos is 1750477162, a Type 1 (individual) record in the CMS NPPES registry.

Where does Hannah De Los Santos practice?

The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-09.