Jeff Grenzke, RRT
NPI 1326124298 · Registered Respiratory Therapist · Palo Alto, CA
Jeff Grenzke, RRT is a Registered Respiratory Therapist provider in Palo Alto, CA (NPI 1326124298).
Provider details
- NPI number
- 1326124298
- Entity type
- Individual
- Primary specialty
- Registered Respiratory TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- RRT
- Sex
- Male
- Sole proprietor
- Yes
- License
- RCP 8178 (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
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
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jeff Grenzke's NPI number?
- Jeff Grenzke's National Provider Identifier (NPI) is 1326124298, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeff Grenzke's specialty?
- Jeff Grenzke is listed in the NPPES registry with a primary specialty of Registered Respiratory Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Jeff Grenzke located?
- Jeff Grenzke's practice location on file with NPPES is 3801 Miranda Ave, Palo Alto, CA 94304.
- What is Jeff Grenzke's phone number?
- The practice phone number listed in the NPPES registry for Jeff Grenzke is (650) 493-5000.
- Is Jeff Grenzke's NPI active?
- Yes — Jeff Grenzke's NPI (1326124298) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.