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

William R Alex, MD

Individual provider Surgery Physician · NPI 1558300681

William R Alex, MD is a Surgery Physician in Riverside, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
4
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

4000 14th St Ste 306
Riverside, CA 92501-4083
Phone: (951) 682-2036
Fax: (951) 682-2942
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Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence G86010 (CA)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence G86010 (CA)
Trauma Surgery Physician Taxonomy 2086S0127X · Licence G86010 (CA)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence G86010 (CA)

Record details

NPI number1558300681
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2006
Last updated in NPPESMarch 19, 2010
Mailing address4000 14th St, Ste 306, Riverside, CA 92501-4083

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