Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Casey Seton Sullivan, RN

Individual provider Critical Care Medicine Registered Nurse · NPI 1457015372

Casey Seton Sullivan, RN is a Nurse Practitioner in Hagerstown, Maryland. Qualified in 2021, 5 years ago. Practices with Medical Practices of Antietam, LLC, a 231-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
5
Licensed in
MD
In the registry since
2021
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

12821 Oak Hill Ave
Hagerstown, MD 21742-2940
Phone: (301) 733-0300
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 11116 Medical Campus Rd, Hagerstown, MD 21742-6710 — (301) 790-8623

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence R191013 (MD)
Critical Care Medicine Registered Nurse Taxonomy 163WC0200X · Licence R191013 (MD)

Record details

NPI number1457015372
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorNo
NPI enumeratedOctober 27, 2021
Last updated in NPPESFebruary 9, 2022
Certification dateFebruary 9, 2022
Mailing address11116 Medical Campus Rd, Hagerstown, MD 21742-6710

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Medical Practices Of Antietam, Llc — 231 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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