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

Marcelyn Opal Billy

Individual provider Social Worker · NPI 1538840939

Marcelyn Opal Billy is a Social Worker in Oceanside, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2023

Practice location Address checks out

1816 Portofino Dr
Oceanside, CA 92054-6130
Phone: (760) 433-6361
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence ASW110331 (CA)

Record details

NPI number1538840939
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJuly 27, 2023
Last updated in NPPESOctober 15, 2025
Certification dateOctober 15, 2025
Mailing address1519 Pepperwood Way, Oceanside, CA 92056-5495

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