Herschel D. Wallen, MD

Medicare activity in 2024

Official CMS public-use data for Herschel D. Wallen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)298 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)152 services
3. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)49 services
4. Blood test, comprehensive group of blood chemicals (80053)48 services
5. Insertion of needle into vein for collection of blood sample (36415)42 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure68%
• High cholesterol55%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)40%
• Arthritis35%
• Diabetes24%
• Depression20%

Hospitals where Herschel D. Wallen works

Medicare's Facility Affiliation Data lists Herschel D. Wallen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Good Samaritan Regional Medical CenterCorvallis, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380014
• Salem HospitalSalem, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380051
• Samaritan Albany General HospitalAlbany, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380022
• Samaritan Lebanon Community HospitalLebanon, OR · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 381323
• Samaritan Pacific Community HospitalNewport, OR · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 381314

Practice locations

Addresses where Herschel D. Wallen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

• 1086 7th Ave SWAlbany, OR 97321
• 3600 NW Samaritan DrCorvallis, OR 97330
• 3600 NW Samaritan Dr, Suite 227Corvallis, OR 97330 (541) 768‑1261
• 441 NW Elks DrCorvallis, OR 97330
• 500 Liberty St SE, Suite 400Salem, OR 97301 (503) 561‑6444

Group practices

Medicare enrollment lists Herschel D. Wallen as a member of these groups (CMS data updated October 2, 2026).

• Good Samaritan Hospital Corvallis380 clinicians in the group
• Albany General Hospital198 clinicians in the group
• Oregon Oncology Specialists LLP41 clinicians in the group

Specialties

• Medical Oncologyprimary

Find other Medical Oncology doctors in Oregon →

Other oncologists in Oregon

Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.

• Brandon M. Hayes Lattin, MD
• Julie N. Graff, MD
• Stacy K. Lewis, MD
• Naga Praneeth Raja, MD
• David Cosgrove, MD
• Hagen F. Kennecke, MD
• Adel Kardosh, MD
• Rajat Thawani, MD

All oncologists in Oregon →

Other clinicians in Good Samaritan Hospital Corvallis

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Richard C. Evans, MD
• Thomas Smith, DO
• Robert W. Davis, MD
• Jennifer A. Smits, MD
• John P. Ketcham, MD
• Adam C. Brady, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians