Cassandra L O'Brien, APRN

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

APRN9363285 Issued in FL

Practice address

1605 W Fairbanks Ave
Winter Park, FL 32789-4603

Phone

(407) 845-8356

NPI assigned

Feb 6, 2018

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in FL

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, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Florida Hospital Medical Group IncGroup PAC ID 0749186153, 1,735 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventhealth Orlando Hospital, Orlando, FL, CCN 100007

Merit-based Incentive Payment System (MIPS)

Final score

97.17 of 100Reported as group

Quality

98.08

Promoting interoperability

100

Improvement activities

40

Cost

75.84

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: cobrien129008@adventhealth.direct-ci.com
• FHIR API: https://fhir4.healow.com/fhir/r4/JEEADA

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.

• Florida Hospital Medical Group Inc

  • Family Medicine Physician
  • Orlando, FL
  • NPI 1225034234

  Nurse Practitioner

  Medicare reassignment Care Compare group NPD
• Central Florida Inpatient Medicine LLC

  • Internal Medicine Physician
  • Lake Mary, FL
  • NPI 1649228859
  Medicare reassignment NPD
• Orlando Cardiac and Vascular Specialists LLC

  • Interventional Cardiology Physician
  • Altamonte Springs, FL
  • NPI 1194116848
  Medicare reassignment NPD
• Florida Hospital Medical Group Inc

  • Prosthetic/Orthotic Supplier
  • Minneola, FL
  • NPI 1285591545
  NPD
• Adventhealth Orlando Cardiac & Vascular Specialists LLC

  • Interventional Cardiology Physician
  • Altamonte Springs, FL
  • NPI 1578448031
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Adventist Health System-Sunbelt, Inc

  • General Acute Care Hospital
  • Orlando, FL
  • NPI 1306938071
  Care Compare affiliation
• Adventist Health System-Sunbelt, Inc

  • Clinical Medical Laboratory
  • Orlando, FL
  • NPI 1801569728

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1517875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767657600000",
    "number": "1821597717",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1605 W FAIRBANKS AVE",
            "city": "WINTER PARK",
            "state": "FL",
            "postal_code": "327894603",
            "telephone_number": "407-845-8356"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1605 W FAIRBANKS AVE",
            "city": "WINTER PARK",
            "state": "FL",
            "postal_code": "327894603",
            "telephone_number": "407-845-8356"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "CASSANDRA",
        "middle_name": "L",
        "credential": "APRN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-02-06",
        "last_updated": "2026-01-06",
        "certification_date": "2026-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "FL",
            "license": "APRN9363285",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "FL",
            "license": "APRN9363285",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENSE",
            "identifier": "ARNP9363285",
            "state": "FL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Nutritional Guidance, Inc
• Nuvida Holistic Medicine LLC
• Rita Nwakaego Nwanyanwu, M.D
• Felicia Amechi Nweze
• Casey Diane O'Brian, OTR/L
• Chante O'Connor
• Maureen O'Connor
• Michelle O'Keefe, MS, RMHCI
• Susan L O'Neal, LMT
• Megan O'Toole

• Nurse Practitioner in Winter Park, FL
• Providers in Winter Park, FL by specialty
• Nurse Practitioner in Florida

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 6, 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.