ROBERT STEPHEN WALKER (MD) – Orthopaedic Hand Surgery Physician, NPI 1639531908
Orthopaedic Hand Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
662 ORTHOPEDIC SURGERY in AZ
Provider Addresses for ROBERT STEPHEN WALKER (MD)
7960 E THOMPSON PEAK PKWY
SCOTTSDALE, AZ 852557406
Phone: (877) 821-4657
Type: Location
690, Shinnecock Lane, Aurora, Portage County, Ohio, 44202, United States
AURORA, OH 442026209
Phone: (440) 552-7433
Type: Location
7960 E THOMPSON PEAK PKWY STE 104
SCOTTSDALE, AZ 852557406
Phone: (877) 821-4657
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 153 Open Payments records for all available years, with a total value of $13,676.
Total Amount is formed as General ($13,676) + Research ($0) + Ownership ($0) = $13,676.
Last reported payment date: 2024-12-21 • Largest payer in this snapshot: Stryker Corporation ($5,241).
Total Amount
$13,676
General + Research + Ownership
Payments
153
Total payment records
General Amount
$13,676
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Stryker Corporation | $5,241 |
| ImpactOrtho, Inc. | $1,723 |
| Sonex Health, Inc. | $1,665 |
| Arthrex, Inc. | $1,346 |
| TriMed, Inc. | $1,194 |
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: 2022-08-24
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 |
|---|---|---|---|---|
| I20220824003090 | I | Orthopedic Surgery | AZ | 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 |
|---|---|---|---|---|
| J3301 | Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 734 | 122 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 168 | 116 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 128 | 94 | $0 |
| 77002 | Fluoroscopic guidance for needle placement | 111 | 82 | $0 |
| 20610 | Aspiration and/or injection of fluid from large joint | 95 | 69 | $0 |
Insurance plans in this area (ZIP 85255)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Orthopedic Surgery | AZ | |
| Orthopedic Surgery | NV | |
| Orthopedic Surgery | AZ | |
| Physician Assistant | AZ | |
| P O D I A T R Y | AZ | |
| Physician Assistant | AZ | |
| Physician Assistant | AZ | |
| Orthopedic Surgery | AZ | |
| Physician Assistant | AZ |
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