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

MS. Casey L O'Bryan, NP-C

Individual provider Family Nurse Practitioner · NPI 1891066650

MS. Casey L O'Bryan, NP-C is a Nurse Practitioner in Washington, District of Columbia. Qualified in 2011, 15 years ago. Practices with One Medstar Primary Care LLC, a 140-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia.

Years since qualifying
15
Licensed in
DC
In the registry since
2012
What do these letters mean?
NP-C — Nurse Practitioner, Certified
A nurse practitioner certified by the AANP.

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Practice location Address checks out

1350 Connecticut Ave NW Ste 1250
Washington, DC 20036-1728
Phone: (888) 663-6331
Fax: (415) 252-7176
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4400 Massachusetts Ave Nw, Washington, DC 20016-8001 — (202) 885-3380

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence RN1025479 (DC)

Record details

NPI number1891066650
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP-C
Sole proprietorNo
NPI enumeratedJanuary 25, 2012
Last updated in NPPESMarch 19, 2025
Certification dateMarch 19, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice One Medstar Primary Care Llc — 140 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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