Individual provider

Hazel Hiroshima, NP

Nurse Practitioner Pediatric Nurse Practitioner

Hazel Hiroshima, NP is a Nurse Practitioner in Pleasant Hill, CA, registered under NPI 1598200503. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 400 TAYLOR BLVD STE 306, Pleasant Hill, CA 94523. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

400 TAYLOR BLVD STE 306, Pleasant Hill, CA 94523 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
95005417 CA Nurse Practitioner primary
95005417 CA Pediatric Nurse Practitioner

This provider holds licence 95005417 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)

This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.

What Nurse Practitioner covers

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners. NUCC Health Care Provider Taxonomy, code 363L00000X
Physician Assistants & Advanced Practice Nursing Providers Nurse Practitioner

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
363L00000X Nurse Practitioner 95005417 CA primary
363LP0200X Pediatric Nurse Practitioner Pediatrics 95005417 CA

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1598200503 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateDec 29, 2016
Last updatedAug 8, 2022
StatusActive
Sole proprietorNo
CredentialNP
Practice address 400 TAYLOR BLVD STE 306
Pleasant Hill, CA 94523
(925) 691-9688
Mailing address 400 TAYLOR BLVD
Pleasant Hill, CA 94523
The last update on file is Aug 8, 2022. Providers are only required to update NPPES when their information changes, so an older date does not necessarily mean the details are wrong — but it is worth a quick call before you travel.

Number check

1598200503 passes the NPI check digit test The final digit 3 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 5 9 8 2 0 0 5 0
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 5 9 8 4 0 0 5 0

Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1598200503?
NPI 1598200503 is the National Provider Identifier assigned to Hazel Hiroshima, NP in Pleasant Hill, CA. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Nurse Practitioner cover?
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional…
How do I contact Hazel Hiroshima, NP?
The phone number on file with NPPES is (925) 691-9688, last updated Aug 8, 2022. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Is NPI 1598200503 a valid number?
Yes. 1598200503 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.