ALLEN L. JOHNSON (MD) – Internal Medicine Physician, NPI 1528035565
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,056 INTERNAL MEDICINE in WA
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Provider Addresses for ALLEN L. JOHNSON (MD)
1400, East Kincaid Street, Mount Vernon, Skagit County, Washington, 98274, United States
ATTN: CREDENTIALING
MOUNT VERNON, WA 982744127
Phone: (360) 428-2500
Fax: (360) 428-6485
Type: Mailing
1990, Hospital Drive, Sedro-Woolley, Skagit County, Washington, 98284, United States
SUITE 200
SEDRO WOOLLEY, WA 982849315
Phone: (360) 856-4222
Fax: (360) 854-2792
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $231.
Total Amount is formed as General ($231) + Research ($0) + Ownership ($0) = $231.
Last reported payment date: 2024-10-17 • Largest payer in this snapshot: Inari Medical, Inc. ($135).
Total Amount
$231
General + Research + Ownership
Payments
3
Total payment records
General Amount
$231
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Inari Medical, Inc. | $135 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | $96 |
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: 2005-04-21
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 |
|---|---|---|---|---|
| I20050421000972 | I | Hospitalist | WA | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 410 | 137 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 317 | 158 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 130 | 120 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 47 | 47 | $0 |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 27 | 26 | $0 |
Insurance plans in this area (ZIP 98274)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice, Hospitalist | UT | |
| - | WA | |
| - | WA | |
| Family Practice | WA | |
| Internal Medicine | WA | |
| Family Practice | AK | |
| - | WA | |
| Internal Medicine, Hospitalist | OH | |
| Internal Medicine, Hospitalist, Internal Medicine | VA | |
| Physician Assistant | OR |
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