MS. MELISSA ANN WALKER (PA) – Physician Assistant, NPI 1053800268
Physician Assistant
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
1,797 PHYSICIAN ASSISTANT in OK
Provider Addresses for MS. MELISSA ANN WALKER (PA)
535 NW 9TH ST STE 305
OKLAHOMA CITY, OK 731021073
Phone: (405) 231-2900
Type: Location
North 9th Street, McAlester, Pittsburg County, Oklahoma, 74501, United States
OKLAHOMA CITY, OK 731021018
Phone: (405) 772-4533
Fax: (405) 772-4539
Type: Mailing
PO BOX 108809
OKLAHOMA CITY, OK 731018809
Phone: (405) 622-3699
Type: Mailing
5472 MAIN ST STE 101
DEL CITY, OK 731155524
Phone: (405) 622-3699
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 15 Open Payments records for all available years, with a total value of $278.
Total Amount is formed as General ($278) + Research ($0) + Ownership ($0) = $278.
Last reported payment date: 2024-10-24 • Largest payer in this snapshot: ABBVIE INC. ($168).
Total Amount
$278
General + Research + Ownership
Payments
15
Total payment records
General Amount
$278
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $168 |
| Exact Sciences Corporation | $32 |
| Grifols USA, LLC | $24 |
| ACADIA Pharmaceuticals Inc | $23 |
| Halozyme Inc | $17 |
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: 2018-08-28
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 |
|---|---|---|---|---|
| I20180828003004 | I | Physician Assistant | OK | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 118 | 70 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 39 | 33 | $0 |
Insurance plans in this area (ZIP 73102)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OK | |
| Physician Assistant | OK | |
| Physician Assistant | OK | |
| Nurse Practitioner | OK | |
| Nurse Practitioner | TX | |
| Nurse Practitioner | OK | |
| Nurse Practitioner | OK | |
| Nurse Practitioner | OK | |
| Nurse Practitioner | OK | |
| Nurse Practitioner | OK |
Reviews
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