DR. LINDA DIANE GROSSHEIM (MD) – Radiation Oncology Physician, NPI 1548211360
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
184 RADIATION ONCOLOGY in WA
Provider Addresses for DR. LINDA DIANE GROSSHEIM (MD)
844 N 5th Ave
Sequim, WA 983823045
Phone: (360) 683-9895
Fax: (360) 582-5614
Type: Location
1100 N Kentucky Ave
West Plains, MO 657752029
Phone: (417) 256-9111
Type: Location
1641 E Polston Ave Ste 102
Post Falls, ID 838547852
Phone: (208) 755-2804
Fax: (208) 765-0277
Type: Location
1641 E POLSTON AVE STE 102
POST FALLS, ID 838547852
Phone: (208) 755-2804
Fax: (208) 765-0277
Type: Mailing
910 W 5TH AVE STE 102B
SPOKANE, WA 992042948
Phone: (509) 755-5783
Fax: (509) 459-1522
Type: Location
200, North Park Street, Kalamazoo, Kalamazoo County, Michigan, 49007, United States
KALAMAZOO, MI 490073731
Phone: (269) 373-7442
Fax: (269) 373-0123
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $107.
Total Amount is formed as General ($107) + Research ($0) + Ownership ($0) = $107.
Last reported payment date: 2024-06-14 • Largest payer in this snapshot: Daiichi Sankyo Inc. ($59).
Total Amount
$107
General + Research + Ownership
Payments
4
Total payment records
General Amount
$107
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-14
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Daiichi Sankyo Inc. | $59 |
| SERVIER PHARMACEUTICALS LLC | $25 |
| TOLMAR, INC. | $23 |
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: 2026-03-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 5 Medicare enrollment records; no due dates published yet.
Enrollment records
5
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 |
|---|---|---|---|---|
| I20071031000599 | I | Radiation Oncology | MI | TBD |
| I20180731002528 | I | Radiation Oncology | ID | TBD |
| I20180731002796 | I | Radiation Oncology | WA | TBD |
| I20230825000286 | I | Radiation Oncology | AZ | TBD |
| I20260305002778 | I | Radiation Oncology | MO | 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 | 16 | 16 | $0 |
Insurance plans in this area (ZIP 98382)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | WA | |
| Nurse Practitioner | WA | |
| - | IL | |
| O P H T H A L M O L O G Y | OR | |
| O P H T H A L M O L O G Y | WA | |
| Nurse Practitioner | WA | |
| Family Practice | WA | |
| Interventional Radiology, Diagnostic Radiology | OH | |
| Physician Assistant | ID | |
| Clinical Psychologist | WA |
Reviews
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