Mark Derr
NPI 1437296696 · Rehabilitation Practitioner · Fresno, CA
Mark Derr is a Rehabilitation Practitioner provider in Fresno, CA (NPI 1437296696).
Provider details
- NPI number
- 1437296696
- Entity type
- Individual
- Primary specialty
- Rehabilitation PractitionerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- VN 164062 (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
- 2007-01-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Derr's NPI number?
- Mark Derr's National Provider Identifier (NPI) is 1437296696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Derr's specialty?
- Mark Derr is listed in the NPPES registry with a primary specialty of Rehabilitation Practitioner (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mark Derr located?
- Mark Derr's practice location on file with NPPES is 4411 E Kings Canyon Rd, Fresno, CA 93702-3604.
- What is Mark Derr's phone number?
- The practice phone number listed in the NPPES registry for Mark Derr is (559) 453-6304.
- Is Mark Derr's NPI active?
- Yes — Mark Derr's NPI (1437296696) 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.