Maria Cassera, MD
NPI 1124582291 · Hospitalist Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Cassera, MD is a Hospitalist Physician provider in Seattle, WA (NPI 1124582291).
Provider details
- NPI number
- 1124582291
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD61318830 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1959 Ne Pacific StSeattle, WA 98195-3011Phone: (206) 543-3605
Registry dates
- Enumerated
- 2019-01-23
- Last updated
- 2023-09-27
- Certified
- 2023-09-27
Frequently asked questions
- What is Maria Cassera's NPI number?
- Maria Cassera's National Provider Identifier (NPI) is 1124582291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Cassera's specialty?
- Maria Cassera is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Cassera located?
- Maria Cassera's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Maria Cassera's phone number?
- The practice phone number listed in the NPPES registry for Maria Cassera is (206) 520-5000.
- Does Maria Cassera accept Medicare?
- Maria Cassera is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Cassera's NPI active?
- Yes — Maria Cassera's NPI (1124582291) is active in the NPPES registry as of the last update on 2023-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.