IndividualActive
Carl Isherwood
NPI 1134390024 · Registered Nurse · Colton, CA
Carl Isherwood is a Registered Nurse provider in Colton, CA (NPI 1134390024).
Provider details
- NPI number
- 1134390024
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 647959 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
400 N Pepper Ave
Colton, CA 92324-1801
Phone: (909) 580-1800
Street-level locationGet directions
Mailing address
400 N Pepper Ave
Colton, CA 92324-1801
Registry dates
- Enumerated
- 2008-03-18
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is Carl Isherwood's NPI number?
- Carl Isherwood's National Provider Identifier (NPI) is 1134390024, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Isherwood's specialty?
- Carl Isherwood is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Carl Isherwood located?
- Carl Isherwood's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is Carl Isherwood's phone number?
- The practice phone number listed in the NPPES registry for Carl Isherwood is (909) 580-1800.
- Is Carl Isherwood's NPI active?
- Yes — Carl Isherwood's NPI (1134390024) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.