William Dierdorf
NPI 1265800460 · Physical Therapy Assistant · Winter Park, FL
William Dierdorf is a Physical Therapy Assistant provider in Winter Park, FL (NPI 1265800460).
Provider details
- NPI number
- 1265800460
- Entity type
- Individual
- Primary specialty
- Physical Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 19575 (FL)
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
10 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
- 2015-09-04
- Last updated
- 2015-09-04
Frequently asked questions
- What is William Dierdorf's NPI number?
- William Dierdorf's National Provider Identifier (NPI) is 1265800460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Dierdorf's specialty?
- William Dierdorf is listed in the NPPES registry with a primary specialty of Physical Therapy Assistant (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is William Dierdorf located?
- William Dierdorf's practice location on file with NPPES is 925 S. Seroran Blvd, Winter Park, FL 32792.
- What is William Dierdorf's phone number?
- The practice phone number listed in the NPPES registry for William Dierdorf is (321) 397-7970.
- Is William Dierdorf's NPI active?
- Yes — William Dierdorf's NPI (1265800460) is active in the NPPES registry as of the last update on 2015-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.