WILLIAM ROBERT WALKER (PA-C) – Physician Assistant, NPI 1013227321
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for WILLIAM ROBERT WALKER (PA-C)
10 WAYMAN LN
BAR HARBOR, ME 046091625
Phone: (207) 288-5081
Fax: (207) 288-8642
Type: Mailing
10110 SOUTH 7650 EAST ROAD
CROW AGENCY, MT 590220009
Phone: (406) 638-2626
Fax: (406) 638-3572
Type: Location
10 Wayman Ln
Bar Harbor, ME 046091625
Phone: (207) 288-5081
Fax: (207) 288-8642
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2017-05-11
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 |
|---|---|---|---|---|
| I20170511000271 | I | Physician Assistant | ME | 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 | 84 | 83 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 26 | 25 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 15 | 15 | $0 |
Insurance plans in this area (ZIP 04609)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | ME | |
| Cardiovascular Disease (Cardiology), Internal Medicine | ME | |
| Pain Management, Anesthesiology | ME | |
| Physician Assistant | ME | |
| Certified Registered Nurse Anesthetist (Crna) | OH | |
| Nurse Practitioner | ME | |
| General Surgery | FL | |
| O B S T E T R I C S/ G Y N E C O L O G Y | ME | |
| Internal Medicine | ME | |
| - | ME |
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