Obioma Nnamdi Onuorah, M.D.
Nephrology Physician · Kennewick, WA
Obioma Nnamdi Onuorah, M.D. is a nephrology physician with a practice address in Kennewick, Washington, and NPI 1982706818, issued on Sep 1, 2006. Check the license (Washington MD00043844, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Obioma Nnamdi Onuorah
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- MD00043844 WA
MD26705 OR
Self-reported in NPPES; status is on the state search - Practice location
- 521 N Young St, Kennewick, WA 99336
- Phone
- (509) 585-5222
- Enumerated
- Sep 1, 2006
- Record last updated
- Jun 20, 2022
- Fax
- (509) 585-5271
- Medicaid ID
- 19827061818 WA
- Medicare enrollment
- Enrolled (PECOS I20041020000546); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 284 in Washington → Look up another NPI →
Also registered at 521 N Young St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellen Ang, M.D.Specialist1184620759
- Samyar Attarian, DOStudent in an Organized Health Care Education/Training Program1588424360
- Rosa Borders, MDGeneral Practice Physician1356394019
- Alexandria Capers, DOInternal Medicine Physician1275119976
- Cyril Christensen, PT, DPTPhysical Therapist1770151995
- Teresita Clar De Jesus, MDInternal Medicine Physician1457304347
Verify Obioma Nnamdi Onuorah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00043844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average nephrology physician in 2024
1,497 Medicare Part D claims for 213 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Calcitriol125 claims
- Allopurinol110 claims
- Losartan Potassium107 claims
- Prosol88 claims
- Kerendia73 claims
- Amlodipine Besylate55 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $383.91
20 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Tri-State Memorial HospitalClarkston, WA · Critical Access Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Obioma Nnamdi Onuorah among 284 nephrology physician records in Washington
Obioma Nnamdi Onuorah, M.D. is one of 284 nephrology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 56% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1991 · median 2003 among the 213 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Washington
There are 284 nephrology physician records in Washington.
All 284 in Washington → Every provider in Kennewick → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Fareed Arif, M.D.Kennewick, WA 993361073616611
- Wassim Khawandi, MDKennewick, WA 993361467420174
- Puneet Tandon, MDKennewick, WA 993361760443832
- Nalini Vassa, M.D.Kennewick, WA 993361386746220
- Elhami Hannan, MDRichland, WA 993521093803884
- Kelvin Hsu, MDRichland, WA 993521518162072
- Jennifer Tan, M.D.Richland, WA 993521912285172
- Jennifer Leach, M.D.Walla Walla, WA 993621417165382
Common questions
What is Obioma Nnamdi Onuorah, M.D.'s NPI number?
Obioma Nnamdi Onuorah, M.D.'s National Provider Identifier (NPI) is 1982706818, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Obioma Nnamdi Onuorah, M.D. located?
The NPPES record lists a practice address at 521 N Young St, Kennewick, WA, 99336. Phone: (509) 585-5222. Providers update this record themselves, so call before visiting.
How can I verify Obioma Nnamdi Onuorah, M.D.'s license?
NPPES lists Washington license number MD00043844, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Obioma Nnamdi Onuorah, M.D. prescribe under Medicare Part D?
In 2024, Obioma Nnamdi Onuorah, M.D. had 1,497 Medicare Part D claims for 213 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.