NPPES file of Aug 9, 2026

Osaginwen Kingsley Ayiyi, NP-C

Family Nurse Practitioner · Phoenix, AZ

Osaginwen Kingsley Ayiyi, NP-C is a family nurse practitioner with a practice address in Phoenix, Arizona, and NPI 1871959965, issued on Jan 6, 2016. Check the license (Arizona AP8375, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871959965
Name
Osaginwen Kingsley Ayiyi
Credential
NP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP8375 AZ
Self-reported in NPPES; status is on the state search
Practice location
3301 E Thomas RD, Phoenix, AZ 85018
Phone
(602) 899-7774
Enumerated
Jan 6, 2016
Record last updated
Jun 16, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(602) 899-7877
Medicaid ID
230287 AZ
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →

Also registered at 3301 E Thomas RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ruth Ayiyi, FNP-CFamily Nurse Practitioner1932605284

Verify Osaginwen Kingsley Ayiyi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license AP8375    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

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98% fewer Medicare Part D claims than the average family nurse practitioner in 2024

30 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Osaginwen Ayiyi30
  2. Specialty average1,305

Most prescribed

  1. Diclofenac Sodium14 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.

Osaginwen Kingsley Ayiyi among 5,933 family nurse practitioner records in Arizona

Osaginwen Kingsley Ayiyi, NP-C is one of 5,933 family nurse practitioner records with a practice address in Arizona. 77% 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 36% of them.

  • NPI issued2016 · 36% of these records are older, 59% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2018 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,242 family nurse practitioner records list a practice address in Phoenix

They are 1,242 of the 31,399 NPPES records with a practice address in Phoenix, and 5,933 family nurse practitioner records in Arizona.

All 5,933 in Arizona → Every provider in Phoenix → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Kelli Anderson, FNP-CPhoenix, AZ 850181740424647
  2. Carey Baugh, NPPhoenix, AZ 850181841253945
  3. Tina Busby, F.N.P.Phoenix, AZ 850181124279682
  4. Kristina Calligan, FNPPhoenix, AZ 850181730444373
  5. Betsy Desjarlais, FNPPhoenix, AZ 850181881807790
  6. Cathryn Echeverria, FNPPhoenix, AZ 850181386967453
  7. Kristen Fleury, FNPPhoenix, AZ 850181639310980
  8. Ruth Levine, FNPPhoenix, AZ 850181073743936

Common questions

What is Osaginwen Kingsley Ayiyi, NP-C's NPI number?

Osaginwen Kingsley Ayiyi, NP-C's National Provider Identifier (NPI) is 1871959965, issued on Jan 6, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Osaginwen Kingsley Ayiyi, NP-C located?

The NPPES record lists a practice address at 3301 E Thomas RD, Phoenix, AZ, 85018. Phone: (602) 899-7774. Providers update this record themselves, so call before visiting.

How can I verify Osaginwen Kingsley Ayiyi, NP-C's license?

NPPES lists Arizona license number AP8375, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Osaginwen Kingsley Ayiyi, NP-C prescribe under Medicare Part D?

In 2024, Osaginwen Kingsley Ayiyi, NP-C had 30 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.