DR. OBIOMA NNAMDI ONUORAH (M.D.) – Nephrology Physician, NPI 1982706818
Nephrology Physician
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Profile Insights
NPPES metrics only — not quality of care.
141 NEPHROLOGY in OR
Provider Addresses for DR. OBIOMA NNAMDI ONUORAH (M.D.)
3615 NW Samaritan Dr Ste 203
Corvallis, OR 973303771
Phone: (541) 768-6930
Type: Location
Kennewick Post Office, South Auburn Street, Downtown, Kennewick, Benton County, Washington, 99336, United States
KENNEWICK, WA 993360128
Phone: (509) 737-1880
Fax: (509) 737-1879
Type: Mailing
North Young Street, Kennewick, Benton County, Washington, 99336-1117, United States
KENNEWICK, WA 993367806
Phone: (509) 585-5222
Fax: (509) 585-5271
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 38 Open Payments records for all available years, with a total value of $1,094.
Total Amount is formed as General ($1,094) + Research ($0) + Ownership ($0) = $1,094.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($292).
Total Amount
$1,094
General + Research + Ownership
Payments
38
Total payment records
General Amount
$1,094
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2022-05-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20041020000546 | I | Nephrology | WA | TBD |
| I20220524002962 | I | Nephrology | 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 | 712 | 280 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 251 | 34 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 172 | 30 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 163 | 129 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 56 | 19 | $0 |
Insurance plans in this area (ZIP 97330)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CO | |
| General Surgery | ID | |
| Physician Assistant | ID | |
| Certified Registered Nurse Anesthetist (Crna) | WA | |
| Orthopedic Surgery | ID | |
| A N E S T H E S I O L O G Y | OR | |
| - | ID | |
| - | WA | |
| Certified Registered Nurse Anesthetist (Crna) | OR | |
| Interventional Pain Management, Anesthesiology | ID |
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