Treesa Williamson, CRNP
NPI 1598159824 · Psychiatric/Mental Health Nurse Practitioner · Philadelphia, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Treesa Williamson, CRNP is a Psychiatric/Mental Health Nurse Practitioner provider in Philadelphia, PA (NPI 1598159824).
Provider details
- NPI number
- 1598159824
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- No
- License
- 12.013004 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 2307 N Broad St Apt 1Philadelphia, PA 19132-4570Phone: (800) 805-6989
- Advance Behavioral Health Treatment Center830 Chestnut St. Suite 1Royersford, PA 19468Phone: (610) 948-2200Fax: (610) 948-2300
Registry dates
- Enumerated
- 2015-03-25
- Last updated
- 2025-12-09
- Certified
- 2025-12-09
Frequently asked questions
- What is Treesa Williamson's NPI number?
- Treesa Williamson's National Provider Identifier (NPI) is 1598159824, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Treesa Williamson's specialty?
- Treesa Williamson is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Treesa Williamson located?
- Treesa Williamson's practice location on file with NPPES is 161 Cecil B Moore Ave Apt 204, Philadelphia, PA 19122-3243.
- What is Treesa Williamson's phone number?
- The practice phone number listed in the NPPES registry for Treesa Williamson is (215) 585-2144.
- Does Treesa Williamson accept Medicare?
- Treesa Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Treesa Williamson's NPI active?
- Yes — Treesa Williamson's NPI (1598159824) is active in the NPPES registry as of the last update on 2025-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.