John Muir Health
NPI 1447269303 · Rehabilitation Hospital Unit · Walnut Creek, CA
Enrolled with Medicare as Part a Provider - Hospital · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Muir Health is a Rehabilitation Hospital Unit organization in Walnut Creek, CA (NPI 1447269303).
Provider details
- NPI number
- 1447269303
- Entity type
- Organization
- Primary specialty
- Rehabilitation Hospital UnitHospital Units
- Parent organization
- John Muir Health
- Organization subpart
- Yes
- Authorized official
- Jane Willemsen, President and Chief Administrative(925) 947-5348
- License
- 140000265 (CA)
Specialties & taxonomies
Hospital Units
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Other name
- John Muir Walnut Creek I/P Rehab Unit
Registry dates
- Enumerated
- 2006-08-07
- Last updated
- 2016-11-07
Frequently asked questions
- What is John Muir Health's NPI number?
- John Muir Health's National Provider Identifier (NPI) is 1447269303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Muir Health?
- John Muir Health is classified in the NPPES registry as Rehabilitation Hospital Unit (Hospital Units).
- Where is John Muir Health located?
- John Muir Health's practice location on file with NPPES is 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598-3122.
- What is John Muir Health's phone number?
- The practice phone number listed in the NPPES registry for John Muir Health is (925) 939-3000.
- Does John Muir Health accept Medicare?
- John Muir Health is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for John Muir Health?
- The authorized official listed on John Muir Health's NPPES record is Jane Willemsen, President and Chief Administrative. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Muir Health's NPI active?
- Yes — John Muir Health's NPI (1447269303) is active in the NPPES registry as of the last update on 2016-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.