Joseph Castro
NPI 1609446236 · Physician Assistant · Bellevue, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Castro is a Physician Assistant provider in Bellevue, WA (NPI 1609446236).
Provider details
- NPI number
- 1609446236
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 61226668 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- 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 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 1,234 | 223 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 319 | 71 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 231 | 44 |
| Tizanidine Hcl | 195 | 53 |
| Methadone Hcl | 185 | 33 |
| Gabapentin | 184 | 48 |
| Hydromorphone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$727 across 31 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
Additional practice locations (2)
- 1135 116th Ave Ne Ste 500Bellevue, WA 98004-4627Phone: (425) 635-6560
- 12039 Ne 128th St Ste 500Kirkland, WA 98034-3029Phone: (425) 899-4892
Registry dates
- Enumerated
- 2021-06-27
- Last updated
- 2025-01-14
- Certified
- 2025-01-14
Frequently asked questions
- What is Joseph Castro's NPI number?
- Joseph Castro's National Provider Identifier (NPI) is 1609446236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Castro's specialty?
- Joseph Castro is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joseph Castro located?
- Joseph Castro's practice location on file with NPPES is 14450 Ne 29th Pl Ste 230, Bellevue, WA 98007-3697.
- What is Joseph Castro's phone number?
- The practice phone number listed in the NPPES registry for Joseph Castro is (425) 998-7884.
- Does Joseph Castro accept Medicare?
- Joseph Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Castro's NPI active?
- Yes — Joseph Castro's NPI (1609446236) is active in the NPPES registry as of the last update on 2025-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.