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

William B Downs, MD

Individual provider Occupational Medicine Physician · NPI 1851593636

William B Downs, MD is an Occupational Medicine Physician in Ontario, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

1101 S Milliken Ave Ste C
Ontario, CA 91761-8112
Phone: (615) 778-4066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence G39617 (CA)

Record details

NPI number1851593636
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2007
Last updated in NPPESOctober 7, 2009

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