MS. MELISSA HOLBROOK WALKER (PA-C) – Physician Assistant, NPI 1578920211
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for MS. MELISSA HOLBROOK WALKER (PA-C)
4108, Point Hollow Lane, Greenbriar, Chantilly, Fairfax County, Virginia, 22033, United States
FAIRFAX, VA 220333012
Phone: (703) 798-6618
Type: Mailing
Filigree Court, Ashburn, Loudoun County, Virginia, 20147, United States
RESTON RADIOLOGY CONSULTANTS
ASHBURN, VA 20147
Phone: (703) 726-1201
Fax: (703) 858-7150
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 29 Open Payments records for all available years, with a total value of $755.
Total Amount is formed as General ($755) + Research ($0) + Ownership ($0) = $755.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Optinose US, Inc. ($251).
Total Amount
$755
General + Research + Ownership
Payments
29
Total payment records
General Amount
$755
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Optinose US, Inc. | $251 |
| GlaxoSmithKline, LLC. | $230 |
| Regeneron Healthcare Solutions, Inc. | $132 |
| ALK-Abello, Inc | $59 |
| Merck Sharp & Dohme LLC | $23 |
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: 2016-03-24
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 |
|---|---|---|---|---|
| I20160316001781 | I | Physician Assistant | DC | TBD |
| I20160324000694 | I | Physician Assistant | VA | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 19 | 18 | $0 |
| 31231 | Diagnostic exam of nasal passages using an endoscope | 18 | 16 | $0 |
Insurance plans in this area (ZIP 22033)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O T O L A R Y N G O L O G Y | VA | |
| - | DC | |
| O T O L A R Y N G O L O G Y | VA |
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