Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Obioma Nnamdi Onuorah, MD

Individual provider Nephrology Physician · NPI 1982706818

Dr. Obioma Nnamdi Onuorah, MD is a Nephrology in Kennewick, Washington. Qualified in 1991, 35 years ago. Practices with Tri-State Memorial Hospital, a 34-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oregon and Washington.

Years since qualifying
35
Licensed in
OR, WA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

521 N Young St
Kennewick, WA 99336-7806
Phone: (509) 585-5222
Fax: (509) 585-5271
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3615 Nw Samaritan Dr Ste 203, Corvallis, OR 97330-3771 — (541) 768-6930

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence MD26705 (OR)
Nephrology Physician Taxonomy 207RN0300X · Licence MD00043844 (WA)
Specialist Taxonomy 174400000X · Licence MD00043844 (WA)

Record details

NPI number1982706818
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 1, 2006
Last updated in NPPESJune 20, 2022
Certification dateJune 20, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Tri-State Memorial Hospital — 34 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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