NPPES file of Aug 9, 2026

Louisa Tostado, PA-C

Physician Assistant · Valencia, CA

Louisa Tostado, PA-C is a physician assistant with a practice address in Valencia, California, and NPI 1013730787, issued on Nov 1, 2024. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1013730787
Name
Louisa Tostado
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
Practice location
23803 Mcbean Pkwy, Valencia, CA 91355
Phone
(661) 481-2400
Enumerated
Nov 1, 2024
Record last updated
Nov 6, 2024
Medicare enrollment
Enrolled (PECOS I20241212002750); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 physician assistant records → All 14,451 in California → Look up another NPI →

Also registered at 23803 Mcbean Pkwy

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

  1. Patricia Cavender, MDDermatology Physician1487626867
  2. Tony Lo, DOPain Medicine Physician1053653881
  3. Jessica Murphy, M.D.Obstetrics & Gynecology Physician1801158282
  4. Jennifer Sung, M.D.Urology Physician1043411887
  5. Gene Tran, D.O.Neurology Physician1003094046
  6. Saif Usman, M.D.Sports Medicine (Family Medicine) Physician1558503177

Verify Louisa Tostado in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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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Bills Medicare through one group practice

  1. Providence Facey Medical FoundationMission Hills, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louisa Tostado among 14,451 physician assistant records in California

Louisa Tostado, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 87% of them.

  • NPI issued2024 · 87% of these records are older, 7% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2024 · median 2018 among the 7,214 with a school on file
  • Record last updated2024 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

23 physician assistant records list a practice address in Valencia

They are 23 of the 2,083 NPPES records with a practice address in Valencia, and 14,451 physician assistant records in California.

All 14,451 in California → Every provider in Valencia → Physician Assistant nationwide →

The 8 physician assistant records with the nearest ZIP codes

  1. Diana Cantero, PAValencia, CA 913551912325051
  2. Jesse De La O, PA-CSanta Clarita, CA 913551972720597
  3. Lorena Del Valle, P.A.Santa Clarita, CA 913551972840338
  4. Sara Golfeiz, PA-CValencia, CA 913551801161054
  5. Marie Hamilton, P.A.Valencia, CA 913551720394000
  6. Richard Handley, PA-C, MPASValencia, CA 913551588762777
  7. Eva Hernandez, PAValencia, CA 913551487833372
  8. Nidfel Herrera, NMD, PA-CValencia, CA 913551295993442

Common questions

What is Louisa Tostado, PA-C's NPI number?

Louisa Tostado, PA-C's National Provider Identifier (NPI) is 1013730787, issued on Nov 1, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Louisa Tostado, PA-C located?

The NPPES record lists a practice address at 23803 Mcbean Pkwy, Valencia, CA, 91355. Phone: (661) 481-2400. Providers update this record themselves, so call before visiting.

How can I verify Louisa Tostado, PA-C's license?

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. Medicare files from data.cms.gov. 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.