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

Mr. William N Barker Jr., ACNP

Individual provider Acute Care Nurse Practitioner · NPI 1457501025

Mr. William N Barker Jr., ACNP is a Nurse Practitioner in Longview, Texas. Qualified in 2008, 18 years ago. Practices with Christus Trinity Clinic, a 1,531-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
18
Licensed in
TX
In the registry since
2008
What do these letters mean?
ACNP — Acute Care Nurse Practitioner
A nurse practitioner who treats acutely ill patients, usually in hospital.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

703 E Marshall Ave Ste 5008
Longview, TX 75601-5500
Phone: (903) 315-4880
Fax: (903) 315-2833
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP117340 (TX)

Record details

NPI number1457501025
Entity typeIndividual (Type 1)
GenderMale
Credentials ACNP
Sole proprietorNo
NPI enumeratedSeptember 19, 2008
Last updated in NPPESOctober 23, 2015

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Christus Trinity Clinic — 1531 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

Other providers in Longview