Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Marcella Isabel Muysson, MD

Individual provider Internal Medicine Physician · NPI 1538797998

Marcella Isabel Muysson, MD is a Hospitalist in Portland, Oregon. Qualified in 2020, 6 years ago. Practices with Portland Adventist Medical Center, a 272-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
6
Licensed in
OR
In the registry since
2020
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

10123 SE Market St
Portland, OR 97216-2532
Phone: (503) 261-6985
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD215309 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD215309 (OR)

Record details

NPI number1538797998
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2020
Last updated in NPPESNovember 6, 2024
Certification dateNovember 6, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Portland Adventist Medical Center — 272 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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