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

Dr. William D. Cox Jr., MD

Individual provider Orthopaedic Surgery Physician · NPI 1407928062

Dr. William D. Cox Jr., MD is an Orthopaedic Surgery Physician in Crystal Lake, Illinois. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

420 N Il Route 31
Crystal Lake, IL 60012
Phone: (815) 356-5200
Fax: (815) 356-5262
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 10370 Haligus Rd Ste 201, Huntley, IL 60142-9582 — (815) 356-5200

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence 036080933 (IL)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 036080933 (IL)

Record details

NPI number1407928062
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESOctober 19, 2018

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