WALKER A WYNKOOP (M.D.) – Orthopaedic Surgery Physician, NPI 1760580427
Orthopaedic Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
287 ORTHOPEDIC SURGERY in IA
Loading map...
Provider Addresses for WALKER A WYNKOOP (M.D.)
Saint Luke's College, 2800, Pierce Street, Sioux City, Woodbury County, Iowa, 51104, United States
SUITE 101
SIOUX CITY, IA 511043755
Phone: (712) 224-8677
Fax: (712) 224-8677
Type: Mailing
807 ILLINOIS AVE
LOS BANOS, CA 936353512
Phone: (209) 710-8695
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $101.
Total Amount is formed as General ($101) + Research ($0) + Ownership ($0) = $101.
Last reported payment date: 2023-03-08 • Largest payer in this snapshot: ORTHALIGN INC ($101).
Total Amount
$101
General + Research + Ownership
Payments
1
Total payment records
General Amount
$101
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-03-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ORTHALIGN INC | $101 |
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: 2020-04-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20100610000524 | I | Orthopedic Surgery | WA | TBD |
| I20200413002871 | I | Orthopedic Surgery | CA | 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 | 219 | 26 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 65 | 44 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 63 | 46 | $0 |
| 20610 | Aspiration and/or injection of fluid from large joint | 37 | 20 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 26 | 26 | $0 |
Insurance plans in this area (ZIP 51104)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery | CA | |
| General Surgery | PA | |
| General Surgery | OK | |
| Vascular Surgery, Thoracic Surgery, General Surgery | MI | |
| General Surgery | MO | |
| Orthopedic Surgery | NY | |
| Physician Assistant | VA | |
| Nurse Practitioner | MI | |
| Orthopedic Surgery | CA | |
| - | CA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.