Concentra Urgent Care

Provider type

Occupational Health Clinics

Address

1101 S Milliken Ave Ste. C, Ontario, CA 91761

Phone

(909) 390-2799

Website

concentra.com/urgent-care-centers/california/los-a

Brand

Concentra

Official record

Occupational medicine clinic (taxonomy 261QX0100X), active (NPI 1245374693), CMS National Provider Identifier registry, record updated June 19, 2025.

Self-reported or agency data, not an endorsement. Check the record before you rely on it.

Data downloaded

November 6, 2026 (Overture Maps, CMS NPI registry)

Location

Map © OpenStreetMap contributors. Confirm the address before you drive over.

Before You Commit

Typical timing is walk-in at many clinics; book ahead for group testing. Ask:

• Do you treat work injuries, and do you bill workers’ compensation directly?
• Is a certified medical examiner on staff for DOT physicals?
• Do you offer respirator medical evaluations and fit tests?
• Do you offer audiograms and lung function tests?
• How fast do employers get results?

All 6 questions to ask →

Tips

• Set up the employer account before you have an injury, so workers know where to go.
• DOT physicals must be done by an examiner on the FMCSA National Registry.
• Workers’ compensation rules on choosing a doctor vary by state, so check yours.

Getting several quotes? Line them up in the quote comparison tool and read who pays for PPE.