There are 22 Certified Registered Nurse Anesthetist (CRNA) clinicians in Fontana, CA in Medicare’s data, ranked by the number of Medicare services they provide.
Certified Registered Nurse Anesthetist (CRNA) clinicians in Fontana
| Clinician | Experience | Telehealth | Medicare patients | Assignment |
|---|---|---|---|---|
| Nancy Lucas, CRNA | 25 yrs | — | 591 | Accepts |
| Amy Marks, CRNA | 23 yrs | — | 345 | Accepts |
| Miguel Lopez, C.R.N.A. | 13 yrs | — | 136 | Accepts |
| Keke Zheng | 7 yrs | — | 178 | Accepts |
| Loretta Gibson, CRNA | 23 yrs | — | 163 | Accepts |
| Kenneth Lake, CRNA | 21 yrs | — | 147 | Accepts |
| Alyssa Miller | 3 yrs | — | 142 | Accepts |
| Daniel Ogaz, CRNA | 21 yrs | — | 142 | Accepts |
| Thien Tran, CRNA | 21 yrs | — | 66 | Accepts |
| Camile Warashina-Messina, CRNA | 7 yrs | — | 111 | Accepts |
| Mark Giese, CRNA | — | — | 50 | Accepts |
| Justin Martinez, CRNA | — | — | 35 | Accepts |
| Matthew Meeker, CRNA | 7 yrs | — | 36 | Accepts |
| Azucena Becerra | 3 yrs | — | 31 | Accepts |
| Jeremy Heiner, CRNA | — | — | 22 | Accepts |
| Jill Hernandez | — | — | 29 | Accepts |
| Brendan Williams, DNP, CRNA | 2 yrs | — | 22 | Accepts |
| Leezett Lopez, RN, BSN, PHN, CCRN | 5 yrs | — | 20 | Accepts |
| Johana Perez, CRNA | 11 yrs | — | 17 | Accepts |
| Jasmin Soto, GRNA | 8 yrs | — | 14 | Accepts |
| Constance Koenig, CRNA | 32 yrs | — | 12 | Accepts |
| Willy Calingasan, CRNA | 20 yrs | — | 11 | Accepts |
What the columns mean
- Experience — years since the clinician’s medical-school graduation (when known).
- Telehealth — the clinician reported providing telehealth (video/phone) visits.
- Medicare patients — distinct Original-Medicare beneficiaries in the latest year; a volume signal, not a quality rating.
- Assignment — “Accepts” means they accept the Medicare-approved amount as full payment (lower out-of-pocket for Medicare patients).
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Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.