Catherine Santizo, PA
NPI 1437882875 · Physician Assistant · Santa Clarita, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Santizo, PA is a Physician Assistant provider in Santa Clarita, CA (NPI 1437882875).
Provider details
- NPI number
- 1437882875
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA63001 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 44 | 20 |
| Atorvastatin Calcium | 41 | 20 |
| Lisinopril | 33 | 14 |
| Metformin Hcl | 26 | 15 |
| Losartan Potassium | 20 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,014 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-07-04
- Last updated
- 2025-10-18
- Certified
- 2025-10-18
Frequently asked questions
- What is Catherine Santizo's NPI number?
- Catherine Santizo's National Provider Identifier (NPI) is 1437882875, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Santizo's specialty?
- Catherine Santizo is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Santizo located?
- Catherine Santizo's practice location on file with NPPES is 18533 Soledad Canyon Rd, Santa Clarita, CA 91351-3722.
- What is Catherine Santizo's phone number?
- The practice phone number listed in the NPPES registry for Catherine Santizo is (661) 673-8800.
- Does Catherine Santizo accept Medicare?
- Catherine Santizo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Santizo's NPI active?
- Yes — Catherine Santizo's NPI (1437882875) is active in the NPPES registry as of the last update on 2025-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.