MR. WILLIAM MARK HAMILTON (OTR/L) – Occupational Therapist, NPI 1053334953
Occupational Therapist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
184 OCCUPATIONAL THERAPIST IN PRIVATE PRACTICE in AR
Provider Addresses for MR. WILLIAM MARK HAMILTON (OTR/L)
403, Southwest Dennis Avenue, Downtown Hillsboro, Hillsboro, Washington County, Oregon, 97123, United States
HILLSBORO, OR 971233928
Phone: (503) 640-3803
Fax: (503) 640-3805
Type: Mailing
6301 HIGHWAY 45 STE G
FORT SMITH, AR 729168857
Phone: (603) 605-6116
Fax: (603) 343-2130
Type: Mailing
3317 N WIMBERLY DR FL 2
FAYETTEVILLE, AR 727034056
Phone: (479) 587-3117
Fax: (479) 587-3185
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2022-02-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20220222002704 | I | Occupational Therapist In Private Practice | AR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 97110 | Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | 303 | 34 | $0 |
| 97168 | Re-evaluation for occupational therapy, typically 30 minutes | 28 | 15 | $0 |
| 97165 | Evaluation for occupational therapy, typically 30 minutes | 24 | 23 | $0 |
Insurance plans in this area (ZIP 97123)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hand Surgery, Orthopedic Surgery | AR | |
| Orthopedic Surgery | AR | |
| Orthopedic Surgery | AR | |
| Physical Therapist In Private Practice | AR | |
| Physician Assistant | AR | |
| Occupational Therapist In Private Practice | AR | |
| Physical Therapist In Private Practice | AR | |
| - | AR | |
| Physical Therapist In Private Practice | AR | |
| Physical Therapist In Private Practice | AR |
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