Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Ruth L Williams, PA-C

Individual provider Medical Physician Assistant · NPI 1952745903

Ruth L Williams, PA-C is a Physician Assistant in Saint Louis, Missouri. Qualified in 2012, 14 years ago. Practices with Mercy Hospitals East Communities, a 91-clinician group and accepts Medicare assignment. Licensed in Illinois, Missouri and Nebraska.

Years since qualifying
14
Licensed in
IL, MO, NE
In the registry since
2013
Specialties on file
3
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

625 S New Ballas Rd
Saint Louis, MO 63141-8240
Phone: (314) 251-0175
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 2022013795 (MO)
Medical Physician Assistant Taxonomy 363AM0700X · Licence 1774 (NE)
Medical Physician Assistant Taxonomy 363AM0700X · Licence 085004642 (IL)

Record details

NPI number1952745903
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedApril 22, 2013
Last updated in NPPESMarch 22, 2024
Certification dateMarch 22, 2024

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Mercy Hospitals East Communities — 91 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients23
Services billed 29 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Mercy Hospitals East Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 91 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis