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

Mr. William James Byrne, ACNP

Individual provider Gerontology Nurse Practitioner · NPI 1558115592

Mr. William James Byrne, ACNP is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2023, 3 years ago. Practices with Washington University Community Specialists LLC, a 95-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
3
Licensed in
MO
In the registry since
2024
What do these letters mean?
ACNP — Acute Care Nurse Practitioner
A nurse practitioner who treats acutely ill patients, usually in hospital.

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Practice location Address checks out

1 Barnes Jewish Hospital Plz Dept Emergency Med
Saint Louis, MO 63110-1003
Phone: (314) 362-9123
Fax: (314) 362-0478
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence 2024005875 (MO)

Record details

NPI number1558115592
Entity typeIndividual (Type 1)
GenderFemale
Credentials ACNP
Sole proprietorNo
NPI enumeratedApril 16, 2024
Last updated in NPPESJuly 17, 2025
Certification dateApril 17, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Washington University Community Specialists Llc — 95 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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