Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN MUIR HEALTH
NPI 1740215219
General Acute Care Hospital in Walnut Creek, CA

Q: What is John Muir Health's NPI number?

The NPI number for John Muir Health is 1740215219. It was assigned to this organization in the NPPES registry on July 12, 2006. The provider is doing business as John Muir Health, Walnut Creek Medical Center.

Q: What is John Muir Health's specialty?

The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.

Q: When was this NPI record last updated?

The NPPES record for John Muir Health was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 12, 2006

1601 YGNACIO VALLEY RD, WALNUT CREEK, CA 94598(925) 939-3000(925) 947-3265 Get Directions Write a Review

NPPES record last updated: August 28, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Aug 28, 2026, Aug 16, 2019 (2 updates tracked since 2019).

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About John Muir Health NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MUIR HEALTH (NPI 1740215219), doing business as John Muir Health, Walnut Creek Medical Center, is a healthcare organization registered as a general acute care hospital in Walnut Creek, California and active in the NPI registry since July 2006. The organization lists Mike Thomas, President And Ceo, as its authorized official.

NPPES Registry Identity

NPI1740215219

Entity TypeOrganization

Primary Taxonomy282N00000X

Legal Business NameJOHN MUIR HEALTH

Location Address1601 YGNACIO VALLEY RDWalnut Creek, CA 94598-3122

Mailing Address1400 Treat BlvdWalnut Creek, CA 94597-2142 · (925) 939-3000 · Fax (925) 308-8944

Phone(925) 939-3000

Fax(925) 947-3265

Organization SubpartNo

Authorized OfficialMike ThomasPresident And Ceo · (925) 941-2100

Enumeration DateJuly 12, 2006

Last NPPES UpdateAugust 28, 20262 updates tracked since enumeration

NPPES CertifiedAugust 28, 2026

✔ NPI 1740215219 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral Acute Care HospitalHospitals

Taxonomy Code282N00000X

License✔ Licensed in CA · 140000265

Definition

An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.

1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598

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Other Names 1

Doing Business AsJohn Muir Health, Walnut Creek Medical Center

Other Identifiers 4

Other050180ACA · Bx Of California

OtherZZZA0703ZCA · Blue Shield Of California

MedicaidHSP40180FCA

MedicaidZZR00180FCA

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MALCOLM C JOHNSON MD

Emergency Medicine