Joy Santillana Diores, NP
Psychiatric/Mental Health Nurse Practitioner · West Covina, CA
Joy Santillana Diores, NP is a psychiatric/mental health nurse practitioner with a practice address in West Covina, California, and NPI 1689337776, issued on Oct 16, 2021. Check the license (California 95019494, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joy Santillana Diores
- Credential
- NP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- 95019494 CA
95073474 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 N Barranca St Ste 900, West Covina, CA 91791
- Phone
- (626) 206-0523
- Enumerated
- Oct 16, 2021
- Record last updated
- Mar 20, 2026
- Fax
- (626) 206-0553
- Medicare enrollment
- Enrolled (PECOS I20230530002165); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,226 in California → Look up another NPI →
Also registered at 100 N Barranca St Ste 900
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael John Bunag, NPNurse Practitioner1104414101
- Evangeline Pelaez, ANP-BCAdult Health Nurse Practitioner1063684546
Verify Joy Santillana Diores in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95019494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
988 Medicare Part D claims for 114 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 1% of claims.
Most prescribed
- Mirtazapine154 claims
- Quetiapine Fumarate127 claims
- Trazodone Hcl106 claims
- Sertraline Hcl72 claims
- Escitalopram Oxalate62 claims
- Buspirone Hcl48 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: $121.63
1 payment: 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
- Home Care MD Medical GroupWest Covina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joy Santillana Diores among 4,226 psychiatric/mental health nurse practitioner records in California
Joy Santillana Diores, NP is one of 4,226 psychiatric/mental health nurse practitioner records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 46% of them.
- NPI issued2021 · 46% of these records are older, 46% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated2021 · median 2021 among the 1,965 with a school on file
- Record last updated2026 · 16% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in California
There are 4,226 psychiatric/mental health nurse practitioner records in California.
All 4,226 in California → Every provider in West Covina → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- John Choe, PMNHPWest Covina, CA 917911215686167
- Kimberley Durr, PMHNP-BC, RNWest Covina, CA 917901093114290
- Moses EwoWest Covina, CA 917901033827456
- Margaret Macdonald, MSN, NP-CWest Covina, CA 917901255850640
- Livia Perry, N.P.West Covina, CA 917901215352620
- Blue Velasco-Pascua, PMHNP-BCWest Covina, CA 917901477420115
- Alice Wambui, NPWest Covina, CA 917901790269025
- Steven Yang, FNPWest Covina, CA 917901487204921
Common questions
What is Joy Santillana Diores, NP's NPI number?
Joy Santillana Diores, NP's National Provider Identifier (NPI) is 1689337776, issued on Oct 16, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Joy Santillana Diores, NP located?
The NPPES record lists a practice address at 100 N Barranca St Ste 900, West Covina, CA, 91791. Phone: (626) 206-0523. Providers update this record themselves, so call before visiting.
How can I verify Joy Santillana Diores, NP's license?
NPPES lists California license number 95019494, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joy Santillana Diores, NP prescribe under Medicare Part D?
In 2024, Joy Santillana Diores, NP had 988 Medicare Part D claims for 114 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.