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

William Royster, MD, PHD

Individual provider Surgical Oncology Physician · NPI 1093160855

William Royster, MD, PHD is a Surgical Oncology Physician in Park Ridge, Illinois. Licensed in Illinois. Registered with an NPI since 2016.

Licensed in
IL
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1875 Dempster St Ste 465
Park Ridge, IL 60068-1129
Phone: (847) 318-9071
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Oncology Physician (primary) Taxonomy 2086X0206X · Licence 036178261 (IL)

Record details

NPI number1093160855
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedApril 29, 2016
Last updated in NPPESJuly 31, 2026
Certification dateJuly 31, 2026
Mailing address1875 Dempster St Ste 465, Park Ridge, IL 60068-1129

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