Maria Affleck Cassera, MD
Hospitalist Physician · Seattle, WA
Maria Affleck Cassera, MD is a hospitalist physician with a practice address in Seattle, Washington, and NPI 1124582291, issued on Jan 23, 2019. Check the license (Washington MD61318830, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Maria Affleck Cassera
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- MD61318830 WA
Self-reported in NPPES; status is on the state search - Practice location
- 325 9TH Ave, Seattle, WA 98104
- Phone
- (206) 520-5000
- Enumerated
- Jan 23, 2019
- Record last updated
- Sep 27, 2023
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 793 in Washington → Look up another NPI →
Also registered at 325 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria Affleck Cassera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61318830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hospitalist physician in 2024
15 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Maria Affleck Cassera among 793 hospitalist physician records in Washington
Maria Affleck Cassera, MD is one of 793 hospitalist physician records with a practice address in Washington. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 80% of them.
- NPI issued2019 · 80% of these records are older, 15% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 82% of these records are
- Record last updated2023 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Washington
There are 793 hospitalist physician records in Washington.
All 793 in Washington → Every provider in Seattle → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Bushra Abid, MDSeattle, WA 981041659534469
- Shiraz Ahmed, MDSeattle, WA 981041730177791
- Maralyssa Bann, M.D.Seattle, WA 981041922337021
- Jennifer BestSeattle, WA 981041518043314
- Elizabeth Dowling, MDSeattle, WA 981041740316603
- Arun Josyula, MDSeattle, WA 981041598968125
- Tyler Lee, MDSeattle, WA 981041346252889
- David Levitt, M.D.Seattle, WA 981041437458007
Common questions
What is Maria Affleck Cassera, MD's NPI number?
Maria Affleck Cassera, MD's National Provider Identifier (NPI) is 1124582291, issued on Jan 23, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Maria Affleck Cassera, MD located?
The NPPES record lists a practice address at 325 9TH Ave, Seattle, WA, 98104. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Maria Affleck Cassera, MD's license?
NPPES lists Washington license number MD61318830, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maria Affleck Cassera, MD prescribe under Medicare Part D?
In 2024, Maria Affleck Cassera, MD had 15 Medicare Part D claims; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Maria Affleck Cassera, MD's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.