Cassy Jean Williams, APRN

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

3013217 Issued in KY

Practice address

68 Harrison Ave Ste 600
Boston, MA 02111-1995

Phone

(657) 500-0634

Fax

(844) 705-0129

NPI assigned

Mar 29, 2012

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in KY

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, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Stepworks Recovery Centers LLCGroup PAC ID 1456611599, 9 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 and National Provider Directory roles.

• Stepworks Recovery Centers LLC

  • Substance Use Disorder Rehabilitation Clinic/Center
  • Elizabethtown, KY
  • NPI 1922497130
  Medicare reassignment Care Compare group NPD
• Brightview, LLC

  • Addiction Medicine (Internal Medicine) Physician
  • Cincinnati, OH
  • NPI 1659769446

  KY

  Medicare reassignment NPD
• University of Louisville Physicians, Inc.

  • Internal Medicine Physician
  • Louisville, KY
  • NPI 1366722316

  Nurse Practitioner

  Medicare reassignment NPD
• Brightview LLC

  • Addiction Medicine (Internal Medicine) Physician
  • Asheboro, NC
  • NPI 1962163782
  NPD
• Stepworks Recovery Centers LLC

  • Rural Health Clinic/Center
  • Elizabethtown, KY
  • NPI 1932744745
  NPD
• University of Louisville Physicians, Inc.

  dba ULP Radiological Associates

  • Diagnostic Radiology Physician
  • Louisville, KY
  • NPI 1316294127
  NPD
• University of Louisville Physicians, Inc.

  dba ULP ACB Neurosurgery

  • Neurological Surgery Physician
  • Louisville, KY
  • NPI 1477898823

  Nurse Practitioner

  NPD
• Bicycle Health Medical Group PA

  • Addiction Medicine (Family Medicine) Physician
  • Seattle, WA
  • NPI 1194342162
  NPD (past)

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

{
    "created_epoch": "1332979200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786492800000",
    "number": "1356617815",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13885 SAINT JOHN RD",
            "city": "RINEYVILLE",
            "state": "KY",
            "postal_code": "401629719",
            "telephone_number": "270-312-8189"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "68 HARRISON AVE STE 600",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021111995",
            "telephone_number": "657-500-0634",
            "fax_number": "844-705-0129"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2415 E Camelback Rd Ste 700",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850164245",
            "country_code": "US",
            "telephone_number": "480-690-9522",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "506 2nd Ave Ste 1400",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981042329",
            "country_code": "US",
            "telephone_number": "857-289-9374",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1580 N Logan St Fl 6",
            "address_purpose": "LOCATION",
            "city": "Denver",
            "state": "CO",
            "postal_code": "802031939",
            "country_code": "US",
            "telephone_number": "720-807-0053",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2021 Guadalupe St Ste 260",
            "address_purpose": "LOCATION",
            "city": "Austin",
            "state": "TX",
            "postal_code": "787055654",
            "country_code": "US",
            "telephone_number": "346-214-1790",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2033 Gateway Pl Fl 5",
            "address_purpose": "LOCATION",
            "city": "San Jose",
            "state": "CA",
            "postal_code": "951103709",
            "country_code": "US",
            "telephone_number": "857-289-9374",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4145 SW Watson Ave Ste 350",
            "address_purpose": "LOCATION",
            "city": "Beaverton",
            "state": "OR",
            "postal_code": "970052191",
            "country_code": "US",
            "telephone_number": "857-289-9374",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "CASSY",
        "middle_name": "JEAN",
        "credential": "APRN",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2012-03-29",
        "last_updated": "2026-08-12",
        "certification_date": "2026-08-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "KY",
            "license": "3013217",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "KY",
            "license": "3013217",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Brennan D Williams
• Brett Brunner Williams, MD
• Brianna Williams, LCSW
• Brianna E Williams, SLP
• Carol I Williams, M.D.
• Cheryl Williams, NP
• Chloe Williams
• Christopher A Williams, PA-C
• Coleen R Williams, PSY.D.
• David A Williams, MD

• Nurse Practitioner in Boston, MA
• Providers in Boston, MA by specialty
• Nurse Practitioner in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 12, 2026; 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.