NPPES file of Aug 9, 2026

Isabelle Hsi-Lin Oka

Nurse Practitioner · Los Angeles, CA

Isabelle Hsi-Lin Oka is a nurse practitioner with a practice address in Los Angeles, California, and NPI 1245181718, issued on Feb 9, 2026. Check the license (California 95031007, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1245181718
Name
Isabelle Hsi-Lin Oka
Primary taxonomy
Nurse Practitioner 363L00000X
License number
95031007 CA
Self-reported in NPPES; status is on the state search
Practice location
757 Westwood Plz, Los Angeles, CA 90095
Phone
(310) 825-9111
Enumerated
Feb 9, 2026
Record last updated
Jun 1, 2026
Medicare enrollment
Enrolled (PECOS I20260416001838); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →

Also registered at 757 Westwood Plz

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

  1. Gihad AbdelhadyStudent in an Organized Health Care Education/Training Program1528760956
  2. Mohamed Abdelrahim, MDStudent in an Organized Health Care Education/Training Program1699577684
  3. Ridwa AbdiStudent in an Organized Health Care Education/Training Program1093195208
  4. Fatemeh Abdollahi Mofakham, MDDiagnostic Radiology Physician1659652915
  5. Sebiha AbdullahiStudent in an Organized Health Care Education/Training Program1457938235
  6. Tatiana AbdulnourStudent in an Organized Health Care Education/Training Program1700724648

Verify Isabelle Hsi-Lin Oka in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95031007    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 California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Isabelle Hsi-Lin Oka among 8,223 nurse practitioner records in California

Isabelle Hsi-Lin Oka 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 not. Its NPI, issued in 2026, is newer than 97% of them.

  • NPI issued2026 · 97% of these records are older, 0% newer
  • In a Medicare fileNo · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2024 · median 2017 among the 3,425 with a school on file
  • Record last updated2026 · 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).

Nurse Practitioner providers in California

There are 8,223 nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 8,223 in California → Every provider in Los Angeles → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Brian Barnes, NPLos Angeles, CA 900951689782831
  2. Cynthia Cabatan-Awang, NPLos Angeles, CA 900951588689616
  3. Suzette Chafey, NPLos Angeles, CA 900951619901998
  4. Nanette Fong, NPLos Angeles, CA 900951154355758
  5. Giovanni Frias, NPLos Angeles, CA 900951699709972
  6. Liana Garrett, RNPLos Angeles, CA 900951801984679
  7. Stacey Green, NPLos Angeles, CA 900951053374397
  8. Vilayphone Hwang, PNPLos Angeles, CA 900951629060157

Common questions

What is Isabelle Hsi-Lin Oka's NPI number?

Isabelle Hsi-Lin Oka's National Provider Identifier (NPI) is 1245181718, issued on Feb 9, 2026. An NPI identifies a provider in billing; it is not a license.

Where is Isabelle Hsi-Lin Oka located?

The NPPES record lists a practice address at 757 Westwood Plz, Los Angeles, CA, 90095. Phone: (310) 825-9111. Providers update this record themselves, so call before visiting.

How can I verify Isabelle Hsi-Lin Oka's license?

NPPES lists California license number 95031007, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.