Quick answers
- Does Javonna O Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Javonna O Brien accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Javonna O Brien see?
- In 2024, CMS data shows 68 Original Medicare patients and 150 services for Javonna O Brien. This counts Original Medicare only and measures volume, not quality.
- What is Javonna O Brien's NPI number?
- 1417479395. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Javonna O Brien, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 68 |
|---|---|
| Services billed to Medicare | 150 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)34 services
- Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus (87637)17 services
- X-ray of chest, 2 views (71046)15 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Diabetes40%
- Chronic kidney disease29%
- Ischemic heart disease25%
Practice locations
Addresses where Javonna O Brien is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1805 Columbia Rd NWWashington, DC 20009 (202) 797‑4960
- 3064 Waldorf Market PlWaldorf, MD 20603 (301) 932‑5960
- 3350 Crain HwyWaldorf, MD 20603 (443) 584‑5787
- 37767 Market DrCharlotte Hall, MD 20622 (301) 290‑1499
- 45870 E Run DrLexington Park, MD 20653 (240) 895‑8630
Group practices
Medicare enrollment lists Javonna O Brien as a member of this group (CMS data updated October 2, 2026).
- MedStar Urgent Care LLC300 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.
Other clinicians in MedStar Urgent Care LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417479395 |
| 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 October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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