Nelson O. Onyango, MD
Hospitalist Physician · Scottsdale, AZ
Nelson O. Onyango, MD is a hospitalist physician with a practice address in Scottsdale, Arizona, and NPI 1265896658, issued on Apr 12, 2016. Check the license (Arizona 77160, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nelson O. Onyango
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 77160 AZ
35139444 OH
Self-reported in NPPES; status is on the state search - Practice location
- 13400 E Shea Blvd, Scottsdale, AZ 85259
- Phone
- (480) 301-8000
- Enumerated
- Apr 12, 2016
- Record last updated
- Sep 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20250923002898); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 775 in Arizona → Look up another NPI →
Also registered at 13400 E Shea Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nelson O. Onyango in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 77160Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average hospitalist physician in 2024
21 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Mayo Clinic ArizonaScottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nelson O. Onyango among 775 hospitalist physician records in Arizona
Nelson O. Onyango, MD is one of 775 hospitalist physician records with a practice address in Arizona. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 65% of them.
- NPI issued2016 · 65% of these records are older, 30% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2016 · median 2011 among the 618 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Arizona
There are 775 hospitalist physician records in Arizona.
All 775 in Arizona → Every provider in Scottsdale → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Nicholas Boe, MDScottsdale, AZ 852591487705299
- Keith Cannon, M.D.Scottsdale, AZ 852591205813128
- Viet Do, DOScottsdale, AZ 852591922057520
- Laura Ferry, M.D.Scottsdale, AZ 852591750391363
- Holly Geyer, M.D.Scottsdale, AZ 852591659539609
- Michael Giunta, MDScottsdale, AZ 852591528051190
- Vanood Khalid, MDScottsdale, AZ 852591649211830
- Stephanie Kokseng, M.D.Scottsdale, AZ 852591194983437
Common questions
What is Nelson O. Onyango, MD's NPI number?
Nelson O. Onyango, MD's National Provider Identifier (NPI) is 1265896658, issued on Apr 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nelson O. Onyango, MD located?
The NPPES record lists a practice address at 13400 E Shea Blvd, Scottsdale, AZ, 85259. Phone: (480) 301-8000. Providers update this record themselves, so call before visiting.
How can I verify Nelson O. Onyango, MD's license?
NPPES lists Arizona license number 77160, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nelson O. Onyango, MD prescribe under Medicare Part D?
In 2024, Nelson O. Onyango, MD had 21 Medicare Part D claims; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Nelson O. Onyango, MD's MIPS final score?
The 2023 MIPS final score is 85.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.