Mary Williams, OTR/L
NPI 1689888737 · Occupational Therapist · Marshall, AR
Enrolled with Medicare as Practitioner - Occupational Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Williams, OTR/L is a Occupational Therapist provider in Marshall, AR (NPI 1689888737).
Provider details
- NPI number
- 1689888737
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- OTR/L
- Sex
- Female
- Sole proprietor
- Yes
- License
- OT0000003695 (TN)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Other 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
3 documented practice locations
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
Additional practice locations (2)
- 2278 Highway 65 NMarshall, AR 72650-7660Phone: (870) 448-3894Fax: (479) 967-2876
- 295 Industrial DrMountain View, AR 72560-7941Phone: (870) 269-5566Fax: (870) 269-9535
Registry dates
- Enumerated
- 2007-05-09
- Last updated
- 2023-02-21
- Certified
- 2023-02-21
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1689888737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williams's specialty?
- Mary Williams is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 502 S Highway 27, Marshall, AR 72650-7638.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (870) 448-5976.
- Does Mary Williams accept Medicare?
- Mary Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1689888737) is active in the NPPES registry as of the last update on 2023-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.