Quick answers
- Does Kathleen Y. Yang accept Medicare assignment?
- Yes. Medicare's clinician data says Kathleen Y. Yang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Kathleen Y. Yang see?
- In 2024, CMS data shows 242 Original Medicare patients and 34,271 services for Kathleen Y. Yang. This counts Original Medicare only and measures volume, not quality.
- What is Kathleen Y. Yang's NPI number?
- 1902931587. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Kathleen Y. Yang, 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.
| Original Medicare patients | 242 |
|---|---|
| Services billed to Medicare | 34,271 |
| Different services or procedures | 151 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, paclitaxel, 1 mg (J9267)6,704 services
- Injection, aprepitant, 1 mg (J0185)5,070 services
- Injection, bevacizumab-bvzr, biosimilar, (zirabev), 10 mg (Q5118)2,640 services
- Injection, palonosetron hcl, 25 mcg (J2469)460 services
- Injection, carboplatin, 50 mg (J9045)339 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 pressure55%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)55%
- High cholesterol50%
- Arthritis30%
- Diabetes22%
- Depression22%
Hospitals where Kathleen Y. Yang works
Medicare's Facility Affiliation Data lists Kathleen Y. Yang 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.
- Bay Area HospitalCoos Bay, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380090
- Good Samaritan Regional Medical CenterCorvallis, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380014
- Mercy Medical CenterRoseburg, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380027
- Peace Harbor Medical CenterFlorence, OR · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 381316
- Sacred Heart Medical Center - RiverbendSpringfield, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380102
Practice locations
Addresses where Kathleen Y. Yang is enrolled with Medicare (CMS data updated October 2, 2026).
- 444 NW Elks DrCorvallis, OR 97330 (541) 754‑1256
- 520 Country Club PkwyEugene, OR 97401 (541) 683‑5001
Group practices
Medicare enrollment lists Kathleen Y. Yang as a member of this group (CMS data updated October 2, 2026).
- Oncology Associates of Oregon P C48 clinicians in the group
Specialties
- Gynecological Oncologyprimary
- Obstetrics/Gynecologyalso
Other gynecologic oncologists in Oregon
Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.
Other clinicians in Oncology Associates of Oregon P C
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1902931587 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians