John Dietel
NPI 1104941640 · Occupational Therapist · Ontario, CA
John Dietel is a Occupational Therapist provider in Ontario, CA (NPI 1104941640).
Provider details
- NPI number
- 1104941640
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- OC007485L (PA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
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
- 2007-03-21
- Last updated
- 2023-01-27
- Certified
- 2023-01-27
Frequently asked questions
- What is John Dietel's NPI number?
- John Dietel's National Provider Identifier (NPI) is 1104941640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Dietel's specialty?
- John Dietel is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Dietel located?
- John Dietel's practice location on file with NPPES is 1661 S Euclid Ave, Ontario, CA 91762-5826.
- What is John Dietel's phone number?
- The practice phone number listed in the NPPES registry for John Dietel is (909) 984-6713.
- Is John Dietel's NPI active?
- Yes — John Dietel's NPI (1104941640) is active in the NPPES registry as of the last update on 2023-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.