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Active NPI 1821597717 Individual Practitioner Female Practitioner

Cassandra L O'brien , APRN

Nurse Practitioner • Winter Park, FL

Professional Overview & Biography Verified Profile Summary

Cassandra O'Brien, APRN is a registered healthcare professional specializing in Nurse Practitioner in Winter Park, FL. Practice services are available at 1605 W FAIRBANKS AVE under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least, subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1605 W Fairbanks Ave

Winter Park, FL 327894603

Telephone 4078458356
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Winter Park, FL

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 12.1 Yrs
State Avg: 10.0 Yrs
Regional Practice Density
45 Specialists

Practicing in Winter Park, FL (8990 Statewide)

Telehealth Adoption Rate
15.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
57.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
19 19 $251.00 $106.12

Medical Specialties & State Licenses

CMS Verified: 2026-01-06
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License FL APRN9363285

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

State License FL APRN9363285

Definition to come...

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Medical License
ARNP9363285 (FL)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

31 Associated Practitioners
Shamim Hasan , PA-C

Physician Assistant

NPI 1003130287

Physician Assistant (Certified)

Dr. George Abreut , DO

Internal Medicine - Cardiovascular Disease

NPI 1013546407

Doctor of Osteopathic Medicine (D.O.)

Lucine Humes , PA-C

Physician Assistant

NPI 1043232176

Physician Assistant (Certified)

Lindon Gray , APRN

Nurse Practitioner - Gerontology

NPI 1093295099

Advanced Practice Registered Nurse

Sarah Stepleman , APRN

Nurse Practitioner - Gerontology

NPI 1235801119

Advanced Practice Registered Nurse

Dana Dos Santos , ARNP-C

Nurse Practitioner - Adult Health

NPI 1265987028

ARNPC

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

10 Historical Events
📍
Updated Practice Location January 06, 2026

Registered at 1605 W FAIRBANKS AVE, WINTER PARK, FL 327894603 (Tel: 4078458356)

📍
Updated Business Mailing Address January 06, 2026

Registered at 1605 W FAIRBANKS AVE, WINTER PARK, FL 327894603 (Tel: 4078458356)

👤
Provider Name / Credentials Updated January 06, 2026

Recorded as CASSANDRA O'BRIEN, APRN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 06, 2026

Nurse Practitioner (License #APRN9363285 in FL)

NPI Profile Active February 06, 2018

NPI status registered as active in NPPES database

📍
Updated Practice Location February 06, 2018

Registered at 525 TECHNOLOGY PARK STE 109, LAKE MARY, FL 327467107 (Tel: 4076472346)

📍
Updated Business Mailing Address February 06, 2018

Registered at 525 TECHNOLOGY PARK STE 109, LAKE MARY, FL 327467107 (Tel: 4076472346)

👤
Provider Name / Credentials Updated February 06, 2018

Recorded as CASSANDRA OBRIEN, ARNP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 06, 2018

Nurse Practitioner (License #ARNP9363285 in FL)

🟢
Initial NPI Registration & Enumeration February 06, 2018

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1821597717
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 06, 2018
Last Update: January 06, 2026
Sole Proprietor: No

Mailing Address

1605 W Fairbanks Ave

Winter Park, FL 327894603

Phone: 4078458356

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.