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

Individual provider Peer Specialist · NPI 1871200659

Gwendolyn Williams-Guess is a Peer Specialist in San Bernardino, California. Practices as a sole proprietor. Registered with an NPI since 2022.

In the registry since
2022
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Practice location Address checks out

255 N D St Ste 412
San Bernardino, CA 92401-1715
Phone: (951) 788-5902
Fax: (951) 788-5903
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Peer Specialist (primary) Taxonomy 175T00000X

Record details

NPI number1871200659
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedNovember 1, 2022
Last updated in NPPESMarch 9, 2023
Certification dateMarch 9, 2023

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