John Derenzy, RRT
NPI 1861068801 · Registered Respiratory Therapist · Santa Rosa, CA
John Derenzy, RRT is a Registered Respiratory Therapist provider in Santa Rosa, CA (NPI 1861068801).
Provider details
- NPI number
- 1861068801
- Entity type
- Individual
- Primary specialty
- Registered Respiratory TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- RRT
- Sex
- Male
- Sole proprietor
- No
- License
- 41108 (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
5 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
- 2021-06-01
- Last updated
- 2021-06-01
- Certified
- 2021-06-01
Frequently asked questions
- What is John Derenzy's NPI number?
- John Derenzy's National Provider Identifier (NPI) is 1861068801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Derenzy's specialty?
- John Derenzy is listed in the NPPES registry with a primary specialty of Registered Respiratory Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Derenzy located?
- John Derenzy's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is John Derenzy's phone number?
- The practice phone number listed in the NPPES registry for John Derenzy is (707) 393-4000.
- Is John Derenzy's NPI active?
- Yes — John Derenzy's NPI (1861068801) is active in the NPPES registry as of the last update on 2021-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.