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

William C Knowler, MD

Individual provider Public Health & General Preventive Medicine Physician · NPI 1023144615

William C Knowler, MD is a Public Health & General Preventive Medicine Physician in Phoenix, Arizona. Licensed in Massachusetts. Registered with an NPI since 2007.

Licensed in
MA
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

1550 E Indian School Rd
Phoenix, AZ 85014-4972
Phone: (602) 200-5206
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Public Health & General Preventive Medicine Physician (primary) Taxonomy 2083P0901X · Licence 36771 (MA)

Record details

NPI number1023144615
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 26, 2007
Last updated in NPPESJuly 26, 2026
Mailing address1550 E Indian School Rd, Phoenix, AZ 85014-4972

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