Treesa Williamson, CRNP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

SP026787 Issued in PA

Practice address

161 Cecil B Moore Ave Apt 204
Philadelphia, PA 19122-3243

Phone

(215) 585-2144

NPI assigned

Mar 25, 2015

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in PA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Brightside Medical PCGroup PAC ID 4082089461, 64 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Brightside Medical, P.C.

  • Psychiatry Physician
  • San Francisco, CA
  • NPI 1508325184

  PA

  Medicare reassignment Care Compare group NPD
• One Stop Wellness MD LLC

  • Psychiatric/Mental Health Nurse Practitioner
  • Philadelphia, PA
  • NPI 1467141622
  Medicare reassignment NPD
• Psychiatry Today Inc.

  dba Cognizant Behavioral Health Services

  • Psychiatry Physician
  • Chadds Ford, PA
  • NPI 1891042651
  Medicare reassignment NPD
• Prospect Health Access Network, Inc.

  • Gynecologic Oncology Physician
  • Chester, PA
  • NPI 1134574775
  NPD (past)
• Ophelia Medical Group Ny, P.C.

  • Addiction Medicine (Psychiatry & Neurology) Physician
  • New York, NY
  • NPI 1013528363
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1427241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765238400000",
    "number": "1598159824",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6 DICKINSON DR STE 107",
            "city": "CHADDS FORD",
            "state": "PA",
            "postal_code": "193179689",
            "telephone_number": "610-361-9500",
            "fax_number": "610-361-9501"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "161 CECIL B MOORE AVE APT 204",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191223243",
            "telephone_number": "215-585-2144"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "Advance Behavioral Health Treatment Center",
            "address_2": "830 Chestnut st. Suite 1",
            "address_purpose": "LOCATION",
            "city": "Royersford",
            "state": "PA",
            "postal_code": "19468",
            "country_code": "US",
            "telephone_number": "610-948-2200",
            "fax_number": "610-948-2300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2307 N Broad St Apt 1",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191324570",
            "country_code": "US",
            "telephone_number": "800-805-6989",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "TREESA",
        "name_prefix": "Mrs.",
        "credential": "CRNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-03-25",
        "last_updated": "2025-12-09",
        "certification_date": "2025-12-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CT",
            "license": "12.013004",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "PA",
            "license": "SP026787",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "PA",
            "license": "SP014874",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "FL",
            "license": "TPAN633",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1031853220001",
            "state": "PA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Owen Winston Williamson, M.D., P.C.
• Rebecca Williamson, MD
• Robbie Williamson, ATC
• Sabina Dominga Williamson, M.S., NCC, LPC
• Sonya Williamson, COTA/L
• Jose Antonio Williford
• Willis Care, LLC
• Alliric I. Willis, M.D.
• Alyssa Willis
• Jamal Omar Willis

• Psychiatric/Mental Health Nurse Practitioner in Philadelphia, PA
• Providers in Philadelphia, PA by specialty
• Psychiatric/Mental Health Nurse Practitioner in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.