Katherine De Castro, PA-C
NPI 1598501991 · Medical Physician Assistant · Antioch, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine De Castro, PA-C is a Medical Physician Assistant provider in Antioch, CA (NPI 1598501991).
Provider details
- NPI number
- 1598501991
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-07-04
- Last updated
- 2025-10-29
- Certified
- 2025-10-29
Frequently asked questions
- What is Katherine De Castro's NPI number?
- Katherine De Castro's National Provider Identifier (NPI) is 1598501991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine De Castro's specialty?
- Katherine De Castro is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine De Castro located?
- Katherine De Castro's practice location on file with NPPES is 3903 Lone Tree Way Ste 104, Antioch, CA 94509-6251.
- What is Katherine De Castro's phone number?
- The practice phone number listed in the NPPES registry for Katherine De Castro is (925) 755-1255.
- Does Katherine De Castro accept Medicare?
- Katherine De Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine De Castro's NPI active?
- Yes — Katherine De Castro's NPI (1598501991) is active in the NPPES registry as of the last update on 2025-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.