Mary Wallace, OTR
NPI 1689398141 · Occupational Therapist · Saint Charles, MO
Enrolled with Medicare as Practitioner - Occupational Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Wallace, OTR is a Occupational Therapist provider in Saint Charles, MO (NPI 1689398141).
Provider details
- NPI number
- 1689398141
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- OTR
- Sex
- Female
- Sole proprietor
- No
- License
- 2022037104 (MO)
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 tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,927 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Therapy Procedure Using Functional Activities97530 | 925 | $27 |
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 418 | $20 |
| Training for Self-Care Or Home Management, Each 15 Minutes97535 | 396 | $23 |
| Therapy Procedure to Re-Educate Brain-To-Nerve-To-Muscle Function, Each 15 Minutes97112 | 157 | $22 |
| Evaluation for Occupational Therapy, Typically 45 Minutes97166 | 31 | $97 |
Typical Medicare-allowed amounts for these services range $20–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-09-28
- Last updated
- 2023-04-14
- Certified
- 2023-04-14
Frequently asked questions
- What is Mary Wallace's NPI number?
- Mary Wallace's National Provider Identifier (NPI) is 1689398141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Wallace's specialty?
- Mary Wallace is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mary Wallace located?
- Mary Wallace's practice location on file with NPPES is 2150 W Randolph St, Saint Charles, MO 63301-0844.
- What is Mary Wallace's phone number?
- The practice phone number listed in the NPPES registry for Mary Wallace is (636) 946-4966.
- Does Mary Wallace accept Medicare?
- Mary Wallace is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Wallace's NPI active?
- Yes — Mary Wallace's NPI (1689398141) is active in the NPPES registry as of the last update on 2023-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.