Jill K. Costley, NP
Nurse Practitioner · Baldwin Park, CA
Jill K. Costley, NP is a nurse practitioner with a practice address in Baldwin Park, California, and NPI 1548318462, issued on Jan 8, 2007. Check the license (California NP7735, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jill K. Costley
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- NP7735 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1011 Baldwin Park Blvd, Baldwin Park, CA 91706
- Phone
- (626) 851-1011
- Enumerated
- Jan 8, 2007
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20091026000503); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 1011 Baldwin Park Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Soma Agarwal, MDOphthalmology Physician1437220316
Verify Jill K. Costley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP7735Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average nurse practitioner in 2024
527 Medicare Part D claims for 163 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Memantine Hcl134 claims
- Donepezil Hcl98 claims
- Sertraline Hcl76 claims
- Trazodone Hcl61 claims
- Mirtazapine35 claims
- Quetiapine Fumarate31 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Dimas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jill K. Costley among 8,223 nurse practitioner records in California
Jill K. Costley, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 18% of them.
- NPI issued2007 · 18% of these records are older, 73% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1995 · median 2017 among the 3,425 with a school on file
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 nurse practitioner records list a practice address in Baldwin Park
They are 26 of the 1,055 NPPES records with a practice address in Baldwin Park, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Baldwin Park → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Julia Aburto-Erazo, NPBaldwin Park, CA 917061922175777
- Roberto Alonso, NPBaldwin Park, CA 917061174690911
- Kim Auduong, NPBaldwin Park, CA 917061972670701
- Nancy Bridgwater, NPBaldwin Park, CA 917061346309077
- Sylvia Dominguez, NPBaldwin Park, CA 917061710046446
- Charlie Evanilla, NPBaldwin Park, CA 917061033286893
- Lorena Guitron-Zaby, NPBaldwin Park, CA 917061548337389
- Alicia Lum, NPBaldwin Park, CA 917061356418107
Common questions
What is Jill K. Costley, NP's NPI number?
Jill K. Costley, NP's National Provider Identifier (NPI) is 1548318462, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jill K. Costley, NP located?
The NPPES record lists a practice address at 1011 Baldwin Park Blvd, Baldwin Park, CA, 91706. Phone: (626) 851-1011. Providers update this record themselves, so call before visiting.
How can I verify Jill K. Costley, NP's license?
NPPES lists California license number NP7735, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Jill K. Costley, NP prescribe under Medicare Part D?
In 2024, Jill K. Costley, NP had 527 Medicare Part D claims for 163 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.