Mark Willson, OT
NPI 1790825537 · Occupational Therapist · Chambersburg, PA
Mark Willson, OT is a Occupational Therapist provider in Chambersburg, PA (NPI 1790825537).
Provider details
- NPI number
- 1790825537
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- OT
- Sex
- Male
- Sole proprietor
- No
- License
- OC008781 (PA)
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
- 2007-02-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Willson's NPI number?
- Mark Willson's National Provider Identifier (NPI) is 1790825537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Willson's specialty?
- Mark Willson is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mark Willson located?
- Mark Willson's practice location on file with NPPES is 112 N 7th St, Chambersburg, PA 17201-1720.
- What is Mark Willson's phone number?
- The practice phone number listed in the NPPES registry for Mark Willson is (717) 267-7715.
- Is Mark Willson's NPI active?
- Yes — Mark Willson's NPI (1790825537) 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.