HARRISON MICHAEL SAPPER – Internal Medicine Physician, NPI 1407350861
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,058 INTERNAL MEDICINE in WA
Provider Addresses for HARRISON MICHAEL SAPPER
PO BOX 4825
PORTLAND, OR 972084825
Phone: (360) 882-2778
Type: Mailing
700 NE 87TH AVE
VANCOUVER, WA 986644896
Phone: (360) 397-4437
Type: Location
50 UNION ST
ELLSWORTH, ME 046051534
Phone: (207) 664-5311
Type: Mailing
Southwest Sam Jackson Park Road, Marquam Hill, Homestead, Portland, Metro, Multnomah County, Oregon, 97201, United States
PORTLAND, OR 972393098
Phone: (503) 494-8211
Type: Mailing
Richard T. Jones Hall, 3181, Southwest Sam Jackson Park Road, Marquam Hill, Homestead, Portland, Metro, Multnomah County, Oregon, 97239, United States
PORTLAND, OR 972393098
Phone: (503) 494-8211
Type: Location
50 Union St
Ellsworth, ME 046051534
Phone: (207) 664-5311
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: 2023-10-10
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 |
|---|---|---|---|---|
| I20210723000290 | I | Internal Medicine | ME | TBD |
| I20231010002752 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 92 | 89 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 13 | $0 |
Insurance plans in this area (ZIP 97208)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | TN | |
| Internal Medicine, Infectious Disease | PA | |
| Internal Medicine | WA | |
| Diagnostic Radiology | OR | |
| Internal Medicine | OR | |
| O P H T H A L M O L O G Y | IA | |
| - | OR | |
| Nurse Practitioner | WA | |
| Nurse Practitioner | WA | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | CA |
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