Ann Williamson, PT
NPI 1245383199 · Physical Therapist · Washington, DC
Ann Williamson, PT is a Physical Therapist provider in Washington, DC (NPI 1245383199).
Provider details
- NPI number
- 1245383199
- Entity type
- Individual
- Primary specialty
- Physical TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- PT
- Sex
- Female
- Sole proprietor
- No
- License
- PT870744 (DC)
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
- 2007-01-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ann Williamson's NPI number?
- Ann Williamson's National Provider Identifier (NPI) is 1245383199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Williamson's specialty?
- Ann Williamson is listed in the NPPES registry with a primary specialty of Physical Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Ann Williamson located?
- Ann Williamson's practice location on file with NPPES is 102 Irving St Nw, Washington, DC 20010-2921.
- What is Ann Williamson's phone number?
- The practice phone number listed in the NPPES registry for Ann Williamson is (301) 581-8054.
- Is Ann Williamson's NPI active?
- Yes — Ann Williamson's NPI (1245383199) 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.