Quick answers
- Where does Allison B. O'Brien see patients?
- Medicare's clinician data lists 3 practice locations, including Washington, DC and Fairfax, VA. Call before your visit to confirm the address.
- What is Allison B. O'Brien's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Allison B. O'Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Allison B. O'Brien accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Allison B. O'Brien offer telehealth?
- Medicare's clinician data says Allison B. O'Brien offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Allison B. O'Brien?
- (202) 660-0005, as listed in official Medicare / NPI Registry data.
- What is Allison B. O'Brien's NPI number?
- 1760904775. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Allison B. O'Brien is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 G St NW, Suite 200eWashington, DC 20001 (202) 660‑0005
- 2987 District Ave, Suite 120Fairfax, VA 22031 (202) 627‑1904
- 601 New Jersey Ave NW, Suite 200Washington, DC 20001 (202) 660‑0005
Group practices
Medicare enrollment lists Allison B. O'Brien as a member of this group (CMS data updated 2026-10-02).
- One MedStar Primary Care LLC140 clinicians in the group
Specialties
- Nurse Practitionerprimary
Find other clinicians: Nurse Practitioner, District of Columbia →
Other nurse practitioners in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760904775 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians