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

Marissa S Marchioni, OT

Individual provider Occupational Therapist · NPI 1538561451

Marissa S Marchioni, OT is an Occupational Therapist in Los Angeles, California. Licensed in California. Registered with an NPI since 2014.

Licensed in
CA
In the registry since
2014
What do these letters mean?
OT — Occupational Therapist
Helps people regain the skills needed for daily living and work.

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Practice location Address checks out

1640 Marengo St Ste 500
Los Angeles, CA 90033-1036
Phone: (323) 442-3340
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Occupational Therapist (primary) Taxonomy 225X00000X · Licence OT17149 (CA)

Record details

NPI number1538561451
Entity typeIndividual (Type 1)
GenderFemale
Credentials OT
Sole proprietorNo
NPI enumeratedSeptember 23, 2014
Last updated in NPPESNovember 27, 2023
Certification dateNovember 2, 2020

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients28
Services billed 663 a service is one billed item, such as a visit, a test or a procedure
Average patient age64

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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