DR. HERSCHEL D WALLEN (M.D.) – Medical Oncology Physician, NPI 1710924451
Medical Oncology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
111 MEDICAL ONCOLOGY in OR
Provider Addresses for DR. HERSCHEL D WALLEN (M.D.)
441 NW ELKS DR STE 100
CORVALLIS, OR 973303744
Phone: (541) 768-4950
Type: Location
Corvallis Post Office, Southwest Jefferson Avenue, Corvallis, Benton County, Oregon, 97331, United States
CORVALLIS, OR 973391189
Phone:
Type: Mailing
Northwest Elks Drive, Corvallis, Benton County, Oregon, 97330, United States
CORVALLIS, OR 973303757
Phone: (541) 768-4950
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 127 Open Payments records for all available years, with a total value of $2,835.
Total Amount is formed as General ($2,835) + Research ($0) + Ownership ($0) = $2,835.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: PFIZER INC. ($261).
Total Amount
$2,835
General + Research + Ownership
Payments
127
Total payment records
General Amount
$2,835
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $261 |
| Novartis Pharmaceuticals Corporation | $189 |
| Blueprint Medicines Corporation | $162 |
| Janssen Biotech, Inc. | $152 |
| Astellas Pharma US Inc | $122 |
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: 2011-02-07
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 |
|---|---|---|---|---|
| I20110207000900 | I | Medical Oncology | OR | 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 | 275 | 162 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 125 | 50 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 35 | 35 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 23 | 13 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 16 | 16 | $0 |
Insurance plans in this area (ZIP 97330)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OR | |
| Physical Therapist In Private Practice | MT | |
| P S Y C H I A T R Y | OR | |
| Physician Assistant | OR | |
| - | OR | |
| - | OR | |
| Occupational Therapist In Private Practice | OR | |
| - | OR | |
| O B S T E T R I C S/ G Y N E C O L O G Y | PA | |
| - | OR |
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