CHRISTOPHER J WALKER (NPC) – Family Nurse Practitioner, NPI 1023217866
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,869 NURSE PRACTITIONER in ME
Provider Addresses for CHRISTOPHER J WALKER (NPC)
43 West Main Street
Liberty, ME 04949
Phone: (207) 589-4509
Fax: (207) 589-3104
Type: Location
28, Liberty Acres Drive, Kennebunkport, York County, Maine, 04046, United States
LIBERTY, ME 049490028
Phone: (207) 589-4509
Fax: (207) 589-3104
Type: Mailing
43, West Main Street, Liberty, Pickens County, South Carolina, 29657, United States
LIBERTY, ME 04949
Phone: (207) 589-4509
Fax: (207) 589-3104
Type: Location
12230 LIONESS WAY
PARKER, CO 801345603
Phone: (720) 644-9355
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 45 Open Payments records for all available years, with a total value of $761.
Total Amount is formed as General ($761) + Research ($0) + Ownership ($0) = $761.
Last reported payment date: 2024-11-22 • Largest payer in this snapshot: PFIZER INC. ($182).
Total Amount
$761
General + Research + Ownership
Payments
45
Total payment records
General Amount
$761
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $182 |
| Lilly USA, LLC | $155 |
| AstraZeneca Pharmaceuticals LP | $112 |
| Amgen Inc. | $78 |
| ABBVIE INC. | $57 |
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: 2014-04-07
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 |
|---|---|---|---|---|
| I20140407000521 | I | Nurse Practitioner | CO | 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 | 124 | 75 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 72 | 56 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 15 | 15 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 15 | 14 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 04949)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CO | |
| Nurse Practitioner | WY | |
| Nurse Practitioner | CO |
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