Stephen Casowitz, PA-C
NPI 1013245851 · Physician Assistant · Seattle, WA
Stephen Casowitz, PA-C is a Physician Assistant provider in Seattle, WA (NPI 1013245851).
Provider details
- NPI number
- 1013245851
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- 60123694 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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 tenure38% of score
16 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-12-04
- Last updated
- 2009-12-04
Frequently asked questions
- What is Stephen Casowitz's NPI number?
- Stephen Casowitz's National Provider Identifier (NPI) is 1013245851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Casowitz's specialty?
- Stephen Casowitz is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Casowitz located?
- Stephen Casowitz's practice location on file with NPPES is 1660 S Columbian Way, Seattle, WA 98108-1532.
- What is Stephen Casowitz's phone number?
- The practice phone number listed in the NPPES registry for Stephen Casowitz is (206) 764-2215.
- Is Stephen Casowitz's NPI active?
- Yes — Stephen Casowitz's NPI (1013245851) is active in the NPPES registry as of the last update on 2009-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.