ASHLEY TASHELLE CRISOSTOMO FNP
NPI 1356862791
Nurse Practitioner - Family in Oxnard, CA

Q: What is Ashley Crisostomo's NPI number?

The NPI number for Ashley Crisostomo is 1356862791. It was assigned to this individual provider in the NPPES registry on July 6, 2017. The provider is also known as Ashley Casillas.

Q: What is Ashley Crisostomo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Q: When was this NPI record last updated?

The NPPES record for Ashley Crisostomo was last updated on February 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 06, 2017PECOS Enrolled

631 COOPER RD, OXNARD, CA 93030(805) 487-9150(805) 487-9152 Get Directions Write a Review

NPPES record last updated: February 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 27, 2023, Jul 6, 2017 (2 updates tracked since 2017).

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About Ashley Tashelle Crisostomo Fnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ASHLEY TASHELLE CRISOSTOMO FNP (NPI 1356862791) is an individual family provider in Oxnard, California, licensed in California (752488) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356862791

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameASHLEY TASHELLE CRISOSTOMOCredential: FNP

Location Address631 COOPER RDOxnard, CA 93030

Mailing Address631 Cooper RdOxnard, CA 93030 · (805) 487-9150 · Fax (805) 487-9152

Phone(805) 487-9150

Fax(805) 487-9152

Sole ProprietorNo

Enumeration DateJuly 6, 2017

Last NPPES UpdateFebruary 27, 20232 updates tracked since enumeration

NPPES CertifiedFebruary 27, 2023

✔ NPI 1356862791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in CA · 752488

631 COOPER RD, Oxnard, CA 93030

Open in Google Maps ↗

Other Names 1

Former Name (1)Ashley Casillas

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ashley Tashelle Crisostomo Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Ashley Crisostomo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Simi Medical Group, Inc

25 mi

Family Medicine

2755 ALAMO ST STE 101
Simi Valley, CA 93065

Reassigned Medicare billing, California enrollment
5 clinicians in this Medicare group

NPI 1346768025 (805) 210-7280

Family Healthcare Network

108 mi

Federally Qualified Health Center (FQHC)

1230 JEFFERSON ST
Delano, CA 93215

Reassigned Medicare billing, California enrollment
276 clinicians in this Medicare group

NPI 1063283158 (559) 737-4700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$95.28 typical visit price

range $62.32 – $185.36

Typical copayment $23.82 (range $15.58 – $46.34)

Most-billed visit code 99203

Established Patient

$108.74 typical visit price

range $20.68 – $151.85

Typical copayment $27.18 (range $5.17 – $37.96)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

5 suppliers11 claims21 services$2.80 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

3 suppliers14 claims3,348 services$0.03 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

3 suppliers14 claims14 services$24.19 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MINH Q BUI M.D

Family Medicine

631 COOPER RD
OXNARD, CA 93030

Ventura County (805) 452-9150

MINH QUANG BUI MD PROF CORP

Family Medicine

631 COOPER RD
OXNARD, CA 93030

Ventura County (805) 487-9150

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ashley Crisostomo's NPI number?

The NPI number for Ashley Crisostomo is 1356862791. It was assigned to this individual provider in the NPPES registry on July 6, 2017. The provider is also known as Ashley Casillas.

Where is Ashley Crisostomo located?

Ashley Crisostomo practices at 631 Cooper Rd, Oxnard, CA 93030. The listed phone number is (805) 487-9150.

What is Ashley Crisostomo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Ashley Crisostomo enrolled in Medicare?

Yes. Ashley Crisostomo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ashley Crisostomo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ashley Crisostomo reassigns Medicare benefits to 2 organizations: Simi Medical Group, Inc (Simi Valley, CA) and Family Healthcare Network (Delano, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ashley Crisostomo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ashley Crisostomo was last updated on February 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.