David Cassius, MD Ps
NPI 1255520102 · Pain Medicine (Physical Medicine & Rehabilitation) Physician · Seattle, WA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Cassius, MD Ps is a Pain Medicine (Physical Medicine & Rehabilitation) Physician organization in Seattle, WA (NPI 1255520102).
Provider details
- NPI number
- 1255520102
- Entity type
- Organization
- Primary specialty
- Pain Medicine (Physical Medicine & Rehabilitation) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Cassius, President(206) 255-8393
- License
- 37363 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-10-17
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is David Cassius, MD Ps's NPI number?
- David Cassius, MD Ps's National Provider Identifier (NPI) is 1255520102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is David Cassius, MD Ps?
- David Cassius, MD Ps is classified in the NPPES registry as Pain Medicine (Physical Medicine & Rehabilitation) Physician (Allopathic & Osteopathic Physicians).
- Where is David Cassius, MD Ps located?
- David Cassius, MD Ps's practice location on file with NPPES is 901 Boren Ave Ste 712, Seattle, WA 98104-3301.
- What is David Cassius, MD Ps's phone number?
- The practice phone number listed in the NPPES registry for David Cassius, MD Ps is (206) 624-9876.
- Does David Cassius, MD Ps accept Medicare?
- David Cassius, MD Ps is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for David Cassius, MD Ps?
- The authorized official listed on David Cassius, MD Ps's NPPES record is David Cassius, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is David Cassius, MD Ps's NPI active?
- Yes — David Cassius, MD Ps's NPI (1255520102) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.