Josiah Owinyo, PA-C
NPI 1114575966 · Surgical Physician Assistant · Issaquah, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Josiah Owinyo, PA-C is a Surgical Physician Assistant provider in Issaquah, WA (NPI 1114575966).
Provider details
- NPI number
- 1114575966
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA60995870 (WA)
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 tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 21 | 20 |
| Tramadol Hcl | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-08-26
- Last updated
- 2020-01-10
- Certified
- 2020-01-10
Frequently asked questions
- What is Josiah Owinyo's NPI number?
- Josiah Owinyo's National Provider Identifier (NPI) is 1114575966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Josiah Owinyo's specialty?
- Josiah Owinyo is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Josiah Owinyo located?
- Josiah Owinyo's practice location on file with NPPES is 751 Ne Blakely Dr Ste 4020, Issaquah, WA 98029-6201.
- What is Josiah Owinyo's phone number?
- The practice phone number listed in the NPPES registry for Josiah Owinyo is (425) 313-7124.
- Does Josiah Owinyo accept Medicare?
- Josiah Owinyo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Josiah Owinyo's NPI active?
- Yes — Josiah Owinyo's NPI (1114575966) is active in the NPPES registry as of the last update on 2020-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.