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

Mrs. Treesa Williamson, CRNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1598159824

Mrs. Treesa Williamson, CRNP is a Nurse Practitioner in Philadelphia, Pennsylvania. Qualified in 2014, 12 years ago. Practices with Brightside Medical PC, a 62-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Connecticut, Florida and Pennsylvania.

Years since qualifying
12
Licensed in
CT, FL, PA
In the registry since
2015
Specialties on file
4
What do these letters mean?
CRNP — Certified Registered Nurse Practitioner
The title Pennsylvania and some other states use for a nurse practitioner.

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Practice location Address checks out

161 Cecil B Moore Ave Apt 204
Philadelphia, PA 19122-3243
Phone: (215) 585-2144
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2307 N Broad St Apt 1, Philadelphia, PA 19132-4570 — (800) 805-6989
  • Advance Behavioral Health Treatment Center, Royersford, PA 19468 — (610) 948-2200

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence SP026787 (PA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 12.013004 (CT)
Nurse Practitioner Taxonomy 363L00000X · Licence SP014874 (PA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence TPAN633 (FL)

Record details

NPI number1598159824
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedMarch 25, 2015
Last updated in NPPESDecember 9, 2025
Certification dateDecember 9, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Brightside Medical Pc — 62 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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