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

William S Walker, NP

Individual provider Sports Medicine (Orthopaedic Surgery) Physician · NPI 1487640033

William S Walker, NP is a Nurse Practitioner in Washington, Indiana. Qualified in 2004, 22 years ago. Practices with St Marys Medical Group LLC, a 228-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
22
Licensed in
IN
In the registry since
2005
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

1314 E Walnut St
Washington, IN 47501-2860
Phone: (812) 473-2642
Show map & directions

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

Additional practice locations (3)

  • 901 Saint Marys Dr Ste 300, Evansville, IN 47714-0521 — (812) 473-2642
  • 1900 Saint Charles St, Jasper, IN 47546-9145 — (812) 634-1211
  • 421 E Van Trees St, Washington, IN 47501-2948 — (812) 254-2663

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 71001830A (IN)
Sports Medicine (Orthopaedic Surgery) Physician Taxonomy 207XX0005X · Licence 71001830A (IN)

Record details

NPI number1487640033
Entity typeIndividual (Type 1)
GenderMale
Credentials NP
Sole proprietorNo
NPI enumeratedSeptember 20, 2005
Last updated in NPPESJune 27, 2024
Certification dateJune 27, 2024
Mailing address1314 E Walnut St, Washington, IN 47501-2860

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice St Marys Medical Group Llc — 228 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare