John Jansen, RRT-ACCS
NPI 1255805487 · Registered Respiratory Therapist · Walnut Creek, CA
John Jansen, RRT-ACCS is a Registered Respiratory Therapist provider in Walnut Creek, CA (NPI 1255805487).
Provider details
- NPI number
- 1255805487
- Entity type
- Individual
- Primary specialty
- Registered Respiratory TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- RRT-ACCS
- Sex
- Male
- Sole proprietor
- No
- License
- 31068 (CA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
Registry dates
- Enumerated
- 2019-01-22
- Last updated
- 2019-01-22
Frequently asked questions
- What is John Jansen's NPI number?
- John Jansen's National Provider Identifier (NPI) is 1255805487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Jansen's specialty?
- John Jansen is listed in the NPPES registry with a primary specialty of Registered Respiratory Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Jansen located?
- John Jansen's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is John Jansen's phone number?
- The practice phone number listed in the NPPES registry for John Jansen is (925) 984-8495.
- Is John Jansen's NPI active?
- Yes — John Jansen's NPI (1255805487) is active in the NPPES registry as of the last update on 2019-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.