Carrier profile · USDOT 3421018 · Updated Jun 13, 2026
SEMPER HEALTH SERVICES LLC
DBA DR SANDRA L O'BRIEN CRNP ROUNDABOUT MOBILE HEALTH
1 power unitBOWIE, MD50/100
AUTHORITY STATUS UNKNOWN
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 2805 ADVENT CT N, BOWIE, MD, 20716-1327
- Operation
- Interstate
Contact
- Phone
- (301) 523-8828
- Cell
- (301) 213-8896
- Fax
- (443) 292-5196
- Web domain
- semperservices.com
Registration
- Officer
- Richard O'Brien
- USDOT / docket
- 3421018
- First registered
- Apr 23, 2020
- Last MCS-150
- Jul 23, 2023 · 900 mi (2022)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.00
- D-U-N-S
- 80208514
Fleet (self-reported · MCS-150)
—CDL drivers
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.