MARIKA WALKER (PA-C) – Physician Assistant, NPI 1437469970
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
9,231 PHYSICIAN ASSISTANT in FL
Provider Addresses for MARIKA WALKER (PA-C)
4513 EXECUTIVE DR.
NAPLES, FL 34119
Phone:
Type: Mailing
4800 BELFORT RD
JACKSONVILLE, FL 322566004
Phone:
Type: Mailing
3635 CLYDE MORRIS BLVD STE 100
PORT ORANGE, FL 321292349
Phone: (904) 398-7205
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 65 Open Payments records for all available years, with a total value of $1,507.
Total Amount is formed as General ($1,507) + Research ($0) + Ownership ($0) = $1,507.
Last reported payment date: 2024-12-14 • Largest payer in this snapshot: Janssen Biotech, Inc. ($307).
Total Amount
$1,507
General + Research + Ownership
Payments
65
Total payment records
General Amount
$1,507
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-14
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $307 |
| ABBVIE INC. | $219 |
| QOL Medical, LLC | $165 |
| Gilead Sciences, Inc. | $112 |
| Phathom Pharmaceuticals, Inc. | $79 |
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: 2013-11-22
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 |
|---|---|---|---|---|
| I20131122001077 | I | Physician Assistant | FL | 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 | 32 | 30 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 15 | 15 | $0 |
Insurance plans in this area (ZIP 34119)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| P A T H O L O G Y | FL | |
| Gastroenterology, Internal Medicine | FL | |
| Gastroenterology, Internal Medicine | FL | |
| G A S T R O E N T E R O L O G Y | FL | |
| Internal Medicine, Gastroenterology | FL | |
| Internal Medicine, Gastroenterology | FL | |
| Nurse Practitioner | FL | |
| - | FL | |
| - | FL |
Reviews
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