MURRAY I LARSEN (MD) – Specialist, NPI 1568451102
Specialist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
475 GASTROENTEROLOGY in WA
Provider Addresses for MURRAY I LARSEN (MD)
302 5TH STR.
3
CLARKSTON, WA 99403
Phone: (347) 882-3083
Type: Location
302, 5th Street, Clarkston, Asotin County, Washington, 99403, United States
SUITE 3
CLARKSTON, WA 99403
Phone: (509) 758-2200
Fax: (509) 758-6511
Type: Mailing
625 6TH ST
CLARKSTON, WA 994032010
Phone: (509) 758-2200
Fax: (509) 758-6511
Type: Mailing
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.
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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: 2004-10-13
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 |
|---|---|---|---|---|
| I20041013000416 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 639 | 509 | $0 |
| 43248 | Insertion of guide wire with dilation of esophagus using a flexible endoscope | 255 | 195 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 143 | 139 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 128 | 128 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 111 | 111 | $0 |
Insurance plans in this area (ZIP 99403)
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