Quick answers
- Where does Barbara E. Duffy see patients?
- Medicare's clinician data lists 5 practice locations, including Olney, MD, Winchester, VA and Falls Church, VA. Call before your visit to confirm the address.
- What is Barbara E. Duffy's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Barbara E. Duffy accept Medicare assignment?
- Yes. Medicare's clinician data says Barbara E. Duffy 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 Barbara E. Duffy offer telehealth?
- Medicare's clinician data says Barbara E. Duffy offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Barbara E. Duffy?
- (410) 929-7225, as listed in official Medicare / NPI Registry data.
- What is Barbara E. Duffy's NPI number?
- 1841460086. 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 Barbara E. Duffy is enrolled with Medicare (CMS data updated 2026-10-02).
- 16940 Georgia AveOlney, MD 20832 (410) 929‑7225
- 2270 Valor DrWinchester, VA 22601 (410) 929‑7225
- 700 W Broad StFalls Church, VA 22046 (410) 929‑7225
- 7067 Columbia Gateway Dr, Suite 180Columbia, MD 21046
- 9841 Broken Land Pkwy, Suite 314Columbia, MD 21046 (410) 929‑7225
Group practices
Medicare enrollment lists Barbara E. Duffy as a member of this group (CMS data updated 2026-10-02).
- Della Behavioral Health Services56 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Olney
Clinicians with the same Medicare primary specialty in Olney, MD — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1841460086 |
| 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