John Muir Health
NPI 1275753493 · Cardiovascular Disease Physician · Walnut Creek, CA
John Muir Health is a Cardiovascular Disease Physician organization in Walnut Creek, CA (NPI 1275753493).
Provider details
- NPI number
- 1275753493
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Joshua Welch, Executive Director(925) 941-2279
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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)
- Doing business as
- John Muir Medical Center Walnut Creek Non Invasi
Registry dates
- Enumerated
- 2007-04-30
- Last updated
- 2016-01-11
Frequently asked questions
- What is John Muir Health's NPI number?
- John Muir Health's National Provider Identifier (NPI) is 1275753493, 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 Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- 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.
- Who is the authorized official for John Muir Health?
- The authorized official listed on John Muir Health's NPPES record is Joshua Welch, Executive Director. 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 (1275753493) is active in the NPPES registry as of the last update on 2016-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.