Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Mary Elizabeth King Johnson, PA-C

Individual provider Physician Assistant · NPI 1992944904

Mary Elizabeth King Johnson, PA-C is a Physician Assistant in Saint Louis, Missouri. Qualified in 2009, 17 years ago. Practices with St Peters Bone and Joint Surgery Inc, a 25-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
17
Licensed in
IL, MO
In the registry since
2009
Specialties on file
2
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

1040 N Mason Rd Ste 103
Saint Louis, MO 63141-6399 Not confirmed with CMS for 16 years — call before visiting
Phone: (314) 469-7246
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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 085003419 (IL)
Physician Assistant Taxonomy 363A00000X · Licence 2009001275 (MO)

Record details

NPI number1992944904
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedFebruary 13, 2009
Last updated in NPPESJuly 21, 2010

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice St Peters Bone And Joint Surgery Inc — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients121
Services billed 621 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at St Peters Bone and Joint Surgery Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis