CLIA lookup
CLIA Labs in Ontario, CA
Every lab with an active CLIA certificate at a city address, A to Z. Open a lab for its certificate dates.
81 labs in Ontario, CA hold an active CLIA certificate in the CMS file posted October 16, 2026.
73 hold a Certificate of Waiver.
Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page
License: a US government work, in the public domain (Public Domain Mark 1.0).
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CLIA Labs in Ontario, CA
| Lab ↑ | CLIA number | Certificate | Facility type |
|---|---|---|---|
| Ontario Healthcare Center | 05D0865535 | Waiver | Skilled nursing or nursing facility |
| Ontario Holt Dialysis Center, Inc | 05D2110056 | Waiver | End stage renal disease dialysis facility |
| Ontario Mills Dialysis | 05D2104042 | Waiver | End stage renal disease dialysis facility |
| Optima Care Home Health Services Inc | 05D1056609 | Waiver | Home health agency |
| Our Family Medical Group Inc | 05D2296740 | Waiver | Physician office |
| Pomona Community Health Center | 05D0997342 | Waiver | Federally qualified health center |
| Pomona Community Health Center | 05D2144093 | Waiver | Federally qualified health center |
| Proactive Work Health Services | 05D2196603 | Waiver | Physician office |
| Quality Home Health Agency | 05D0963467 | Waiver | Home health agency |
| Rancho Clinica Medica Familiar | 05D2135237 | Waiver | Physician office |
| Robertson Surgery Center-Ontario | 05D2309434 | Waiver | Ambulatory surgery center |
| Rosewood House | 05D1086271 | Waiver | Intermediate care facility for individuals with intellectual disabilities |
| Royal Medical Center | 05D1017422 | Waiver | Physician office |
| Ruben Ruiz, MD, A Medical Corporation | 05D0879364 | Waiver | Physician office |
| San Bernardino County Public Health Laboratory | 05D0665059 | Compliance | Public health laboratory |
| Scpmg Ontario Medical Offices BLD A & D | 05D1050221 | PPM | Health maintenance organization |
| Seasons Hospice & Palliative Care of Ca-San | 05D2049727 | Waiver | Hospice |
| Southern Ontario Medical Center Inc | 05D0856730 | Waiver | Physician office |
| Sushil Anand MD Faap | 05D2105113 | Waiver | Physician office |
| Thaker Urological Center, Inc. | 05D2126644 | Waiver | Physician office |
| Three Angels Medical Professional Corp # 3 | 05D2280434 | Waiver | Physician office |
| Trinity Medical Clinic | 05D2098791 | Waiver | Physician office |
| Unicare Community Health Center Inc | 05D2182166 | Waiver | Federally qualified health center |
| Unicare Community Health Center, Inc | 05D2089454 | Waiver | Community clinic |
| Unity Hospice Care, Inc | 05D2286286 | Waiver | Hospice |
| Upland Outpatient Surgical Center, LP | 05D0953985 | Waiver | Ambulatory surgery center |
| Upland-Ontario Medical Clinic | 05D2090167 | Waiver | Physician office |
| Vna Care | 05D0642862 | Waiver | Hospice |
| Walgreens 06147 | 05D2298434 | Waiver | Pharmacy |
| Walgreens 10202 | 05D2303498 | Waiver | Pharmacy |
| Walmart Pharmacy #10-3796 | 05D2339723 | Waiver | Pharmacy |
Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page
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Questions
How many CLIA labs are in Ontario, CA?
81 labs with a Ontario address hold an active CLIA certificate in the CMS file posted October 16, 2026.
What certificates do Ontario labs hold?
73 Certificate of Waiver, 3 Certificate of Accreditation, 2 Certificate of Compliance, 2 Certificate for Provider-Performed Microscopy Procedures, 1 Certificate of Registration.
What does a CLIA number look like?
Ten characters: two digits, the letter D, then seven digits (for example 45D2100035). CMS assigns one to each laboratory certificate under the Clinical Laboratory Improvement Amendments.