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Book urgent care & walk-in clinics near me in Ontario, CA

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20 instant-book locations

Urgent care

25482 Marguerite Pkwy, Mission Viejo, CA 9269225482 Marguerite Pkwy
Open until 2:00 pm
  • Mon 8:00 am - 2:00 pm
  • Tue 8:00 am - 2:00 pm
  • Wed 8:00 am - 2:00 pm
  • Thu 8:00 am - 2:00 pm
  • Fri 8:00 am - 2:00 pm
  • Sat 8:00 am - 2:00 pm
  • Sun 8:00 am - 2:00 pm
1.0(1 reviews)
This clinic has shorter than average waiting periods

Short Wait Time

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Urgent care

2075 San Joaquin Hills Rd, Newport Beach, CA 926602075 San Joaquin Hills Rd
Open until 8:00 pm
  • Mon 8:00 am - 8:00 pm
  • Tue 8:00 am - 8:00 pm
  • Wed 8:00 am - 8:00 pm
  • Thu 8:00 am - 8:00 pm
  • Fri 8:00 am - 8:00 pm
  • Sat 8:00 am - 5:00 pm
  • Sun 8:00 am - 5:00 pm
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Urgent care

1236 Brooks St, Ontario, CA 917621236 Brooks St
Open until 6:00 pm
  • Mon 7:30 am - 6:00 pm
  • Tue 7:30 am - 6:00 pm
  • Wed 7:30 am - 6:00 pm
  • Thu 7:30 am - 6:00 pm
  • Fri 7:30 am - 6:00 pm
  • SatClosed
  • SunClosed
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Urgent care

2171 S Grove Ave, Ontario, CA 917612171 S Grove Ave
Open until 6:00 pm
  • Mon 7:00 am - 6:00 pm
  • Tue 7:00 am - 6:00 pm
  • Wed 7:00 am - 6:00 pm
  • Thu 7:00 am - 6:00 pm
  • Fri 7:00 am - 6:00 pm
  • SatClosed
  • SunClosed
1.5(48 reviews)
Concentra Urgent Care, Ontario South (Grove) - 2171 S Grove Ave, Ontario
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Urgent care

5404 Moreno St, Montclair, CA 917635404 Moreno St
4.95(32 reviews)
This clinic is rated highly in patient reviews and ratings

Highly Rated

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Urgent care

9057 Central Ave, Montclair, CA 917639057 Central Ave
Open until 8:30 pm
  • Mon 9:00 am - 8:30 pm
  • Tue 9:00 am - 8:30 pm
  • Wed 9:00 am - 8:30 pm
  • Thu 9:00 am - 8:30 pm
  • Fri 9:00 am - 8:30 pm
  • Sat 9:00 am - 3:30 pm
  • Sun 9:00 am - 12:30 pm
3.17(6 reviews)
EXCELLENT STAFF. Gloria Sanchez NP is extremely knowledgeable. The director Noreen and manager are excellent Individuals.
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Urgent care

8283 Grove Ave, Rancho Cucamonga, CA 917308283 Grove Ave
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Urgent care

974 W Foothill Blvd, Upland, CA 91786974 W Foothill Blvd
Open until 8:00 pm
  • Mon 8:00 am - 8:00 pm
  • Tue 8:00 am - 8:00 pm
  • Wed 8:00 am - 8:00 pm
  • Thu 8:00 am - 8:00 pm
  • Fri 8:00 am - 8:00 pm
  • Sat 9:00 am - 5:00 pm
  • Sun 9:00 am - 5:00 pm
4.02(183 reviews)
This clinic has shorter than average waiting periods

Short Wait Time

I came in for a painful finger tip after going to planned parenthood within 24 hours, All the staff from check in to check out was awesome and my pain was literally a 10 for me pain level after the Dr checked me out the pain went from a 10 to a 4 idk how but it did. She also checked out this problem I had for six years and was too embarrassed to bring it to my primary and she prescribed me some ointments and my finger is like new and my other problem is gone, they are really awesome here.
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Urgent care

2295 S Vineyard Ave, Ontario, CA 917612295 S Vineyard Ave
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Urgent care

3200 Inland Empire Blvd, Ontario, CA 917643200 Inland Empire Blvd
Open until 5:00 pm
  • Mon 8:00 am - 5:00 pm
  • Tue 8:00 am - 5:00 pm
  • Wed 8:00 am - 5:00 pm
  • Thu 8:00 am - 5:00 pm
  • Fri 8:00 am - 5:00 pm
  • SatClosed
  • SunClosed
Concentra Urgent Care, Ontario Airport - 3200 Inland Empire Blvd
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Urgent care

8520 Archibald Ave, Rancho Cucamonga, CA 917308520 Archibald Ave
Open until 8:00 pm
  • Mon 8:00 am - 8:00 pm
  • Tue 8:00 am - 8:00 pm
  • Wed 8:00 am - 8:00 pm
  • Thu 8:00 am - 8:00 pm
  • Fri 8:00 am - 8:00 pm
  • Sat 9:00 am - 4:00 pm
  • Sun 9:00 am - 1:00 pm
3.0(43 reviews)
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Urgent care

1601 Monte Vista Ave, Claremont, CA 917111601 Monte Vista Ave
Open until 8:00 pm
  • Mon 8:00 am - 8:00 pm
  • Tue 8:00 am - 8:00 pm
  • Wed 8:00 am - 8:00 pm
  • Thu 8:00 am - 8:00 pm
  • Fri 8:00 am - 8:00 pm
  • Sat 9:00 am - 5:00 pm
  • Sun 9:00 am - 5:00 pm
2.5(60 reviews)
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Urgent care

3550 E Philadelphia St, Ontario, CA 917613550 E Philadelphia St
Open until 7:00 pm
  • Mon 8:00 am - 7:00 pm
  • Tue 8:00 am - 7:00 pm
  • Wed 8:00 am - 7:00 pm
  • Thu 8:00 am - 7:00 pm
  • Fri 8:00 am - 7:00 pm
  • SatClosed
  • SunClosed
2.0(16 reviews)
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Urgent care

9695 Base Line Rd, Rancho Cucamonga, CA 917309695 Base Line Rd
Open until 8:00 pm
  • Mon 8:00 am - 8:00 pm
  • Tue 8:00 am - 8:00 pm
  • Wed 8:00 am - 8:00 pm
  • Thu 8:00 am - 8:00 pm
  • Fri 8:00 am - 8:00 pm
  • Sat 8:00 am - 8:00 pm
  • Sun 8:00 am - 8:00 pm
3.8(5 reviews)
This clinic is rated highly in reviews for their friendly staff

Friendly Staff

In and out they accepted my insurance and I was in and out in about an hour wrote our prescription and done ✅
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Urgent care

1101 S Milliken Ave, Ontario, CA 917611101 S Milliken Ave
Open until 5:00 pm
  • Mon 8:00 am - 5:00 pm
  • Tue 8:00 am - 5:00 pm
  • Wed 8:00 am - 5:00 pm
  • Thu 8:00 am - 5:00 pm
  • Fri 8:00 am - 5:00 pm
  • SatClosed
  • SunClosed
2.0(20 reviews)
Concentra Urgent Care, Ontario - 1101 S Milliken Ave, Ontario
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Urgent care

9405 Fairway View Pl, Rancho Cucamonga, CA 917309405 Fairway View Pl
Open until11:59 pm
  • Mon12:00 am - 11:59 pm
  • Tue12:00 am - 11:59 pm
  • Wed12:00 am - 11:59 pm
  • Thu12:00 am - 11:59 pm
  • Fri12:00 am - 11:59 pm
  • Sat12:00 am - 11:59 pm
  • Sun12:00 am - 11:59 pm
1.99(149 reviews)
Concentra Urgent Care, Rancho Cucamonga - 9405 Fairway View Pl, Rancho Cucamonga
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Urgent care

9130 Anaheim Pl, Rancho Cucamonga, CA 917309130 Anaheim Pl
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Urgent care

10590 Town Center Dr, Rancho Cucamonga, CA 9173010590 Town Center Dr
Open until11:00 pm
  • Mon 4:30 pm - 11:00 pm
  • Tue 4:30 pm - 11:00 pm
  • Wed 4:30 pm - 11:00 pm
  • Thu 4:30 pm - 11:00 pm
  • Fri 4:30 pm - 11:00 pm
  • Sat11:00 am - 7:00 pm
  • Sun11:00 am - 7:00 pm
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Urgent care

10841 White Oak Ave, Rancho Cucamonga, CA 9173010841 White Oak Ave
Open until11:59 pm
  • Mon12:00 am - 11:59 pm
  • Tue12:00 am - 11:59 pm
  • Wed12:00 am - 11:59 pm
  • Thu12:00 am - 11:59 pm
  • Fri12:00 am - 11:59 pm
  • Sat12:00 am - 11:59 pm
  • Sun12:00 am - 11:59 pm
2.03(108 reviews)
Was in and out in about an hour and ten minutes!! That's a first for an urgent care facility on a Friday evening!! I was very surprised and the Doctor was great!! Thanks:)
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