Ilona Willyard, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Owasso, OK
Ilona Willyard, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Owasso, Oklahoma, and NPI 1154687697, issued on Apr 10, 2012. Check the license (Oklahoma 90504, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ilona Willyard
- Credential
- PMHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 90504 OK
Self-reported in NPPES; status is on the state search - Practice location
- 8418 N 123RD East Ave, Owasso, OK 74055
- Phone
- (918) 858-4353
- Enumerated
- Apr 10, 2012
- Record last updated
- Feb 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20231003000560); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 8418 N 123RD East Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelsey HaynesPhysician Assistant1619631801
- Wanjiru LandersPhysician Assistant1881160356
- Curtis Martinez, PAPhysician Assistant1073836235
Verify Ilona Willyard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 90504Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
252 Medicare Part D claims for 34 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Bupropion Xl24 claims
- Venlafaxine Hcl Er22 claims
- Buspirone Hcl19 claims
- Lamotrigine17 claims
- Duloxetine Hcl16 claims
- Aripiprazole13 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: $802.19
43 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 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.
Bills Medicare through one group practice
- Pine Ridge Mental Healthcare, LLCClaremore, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Oklahoma
There are 318 psychiatric/mental health nurse practitioner records in Oklahoma.
Other psychiatric/mental health nurse practitioner records in Oklahoma
- Meryl Aaron, APRNEdmond, OK1477117638
- Crystal Abbott, APRN, PMHNP-BCLawton, OK1922862135
- Melissa Abercrombie, DNP, APRN, PMHNP-BCNorman, OK1245111665
- Renita AbrahamOklahoma City, OK1245034453
- Ngwe Achidi, PMHNPYukon, OK1386517571
- Adejoke Adeoba, PMHNP-BCOklahoma City, OK1154283943
- Abiodun AdeyigaOklahoma City, OK1700641727
- Esinam AdoteyElk City, OK1407542251
- Chika Agina, PMHNPAntlers, OK1528331675
- Sepideh Ahmadpour, APNP-CNPNorman, OK1932452000
Common questions
What is Ilona Willyard, PMHNP-BC's NPI number?
Ilona Willyard, PMHNP-BC's National Provider Identifier (NPI) is 1154687697, issued on Apr 10, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ilona Willyard, PMHNP-BC located?
The NPPES record lists a practice address at 8418 N 123RD East Ave, Owasso, OK, 74055. Phone: (918) 858-4353. Providers update this record themselves, so call before visiting.
How can I verify Ilona Willyard, PMHNP-BC's license?
NPPES lists Oklahoma license number 90504, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
How much does Ilona Willyard, PMHNP-BC prescribe under Medicare Part D?
In 2024, Ilona Willyard, PMHNP-BC had 252 Medicare Part D claims for 34 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.