1. Home
  2. Directory
  3. California
  4. Santa Clarita
  5. Physician Assistant
  6. NPI Profile

CATHERINE SANTIZO PA
NPI 1437882875
Physician Assistant in Santa Clarita, CA

Active since July 04, 2022PECOS Enrolled
18533 SOLEDAD CANYON RD, SANTA CLARITA, CA 91351(661) 673-8800 Get Directions Write a Review

NPPES record last updated: October 18, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 2, 2025, Apr 11, 2023, Jan 4, 2023 and 1 more (4 updates tracked since 2022).

About Catherine Santizo Pa NPPES

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

CATHERINE SANTIZO PA (NPI 1437882875) is an individual physician assistant in Santa Clarita, California, licensed in California (PA63001) and active in the NPI registry since July 2022. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2023).

NPPES Registry Identity

NPI1437882875
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameCATHERINE SANTIZOCredential: PA
Location Address18533 SOLEDAD CANYON RDSanta Clarita, CA 91351-3722
Mailing Address18533 Soledad Canyon RdSanta Clarita, CA 91351-3722 · (661) 673-8800
Phone(661) 673-8800
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2023
Enumeration DateJuly 4, 2022
Last NPPES UpdateOctober 18, 20254 updates tracked since enumeration
NPPES CertifiedOctober 18, 2025
✔ NPI 1437882875 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA63001
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
18533 SOLEDAD CANYON RD, Santa Clarita, CA 91351
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Catherine Santizo Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446770242
PECOS Enrollment IDI20250224003037
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91351 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

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

DELARAM DANAEI MD
Family Medicine
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (661) 673-8800
ELLENE SANDOVAL
Pediatrics
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (661) 673-8800
NORTHEAST VALLEY HEALTH CORPORATION
Clinic/Center (Federally Qualified Health Center (FQHC))
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (661) 287-1551
MR. ISMAEL JIMENEZ FNP
Nurse Practitioner (Family)
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (661) 673-8800
KEISHLA JANICE DEGRO VALLADARES MD, FAAP
Pediatrics
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (616) 738-8006
NATALIA HENRIQUEZ MD
Family Medicine
18533 SOLEDAD CANYON RD
SANTA CLARITA, CA 91351
Los Angeles County (661) 673-8800

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 Catherine Santizo's NPI number?

The NPI number for Catherine Santizo is 1437882875. It was assigned to this individual provider in the NPPES registry on July 4, 2022.

Where is Catherine Santizo located?

Catherine Santizo practices at 18533 Soledad Canyon Rd, Santa Clarita, CA 91351. The listed phone number is (661) 673-8800.

What is Catherine Santizo's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Catherine Santizo enrolled in Medicare?

Yes. Catherine Santizo is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Catherine Santizo was last updated on October 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.