Ricardo B Ronquillo, MD
Anesthesiology · San Francisco
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 7
- 3 carriers
- Office
- 1
- Since medical school
- 35 years
- Stanford University School of Medicine, 1991
Offices
1 location · G2 Anesthesia PC · 104 clinicians in this group
Looking this up.
Hospitals listed: Good Samaritan Hospital. That is not proof they admit you there this week.
Plans that list them
7 plans · 3 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Ronquillo’s office at (415) 379-7500 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
7 of 7 plans
| Astiva Health C-SNP WOW - NorCal (HMO C-SNP) | Astiva Health | Listed | Sep 27, 2026 |
| Astiva Health Premier Plan - NorCal (HMO) | Astiva Health | Listed | Sep 27, 2026 |
| Astiva Health Savings Plan - NorCal (HMO) | Astiva Health | Listed | Sep 27, 2026 |
| Blue Shield Inspire (HMO) | Blue Shield of California | Listed | Aug 26, 2026 |
| Imperial Courage Plan (HMO) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
| Imperial Dynamic Plan (HMO) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
| Imperial Senior Value (HMO C-SNP) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
California Medical Board record
Licence G76604 · Current
Licensed to practise in California · since 1993 · expires 2026-12-31 · Stanford University School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Anesthesiology - Anesthesiology
- American Board of Anesthesiology - Critical Care Medicine
Hospitals they work in
1 hospital
These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.
- Good Samaritan HospitalSan Jose, CAAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPart of HCA Healthcare, which runs 185 hospitals in 19 statesPatients rate it 2 of 5 · 67% would definitely recommend itOverall rating: 2 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.337, Oct 2024 – Sep 2025
See every measure and the patient survey for Good Samaritan Hospital
Behind the star rating — Deaths: 0 better, 8 the same, 0 worse of 8 measures. Safety: 1 better, 6 the same, 1 worse of 8 measures. Readmissions: 0 better, 5 the same, 4 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Clostridium Difficile (C.Diff)Infections | 0.337 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.75 (0 to 1.67) · 1,340 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.84 (0.54 to 1.14) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 143.59 (98.7 to 188.49) · 98 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.7 · 45 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.1 · 100 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 12.7 · 270 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 11.3 · 573 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 15.6 · 820 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 8.5 · 482 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.3 · 3,711 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.12 (0 to 0.3) · 8,866 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.2 (0.01 to 0.38) · 9,051 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 2.65 (0.74 to 4.56) · 1,929 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.8 (0.21 to 3.39) · 670 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.33 (0.88 to 3.78) · 1,836 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 6.73 (0 to 13.46) · 669 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 7.58 (3.96 to 11.19) · 654 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.59 (0.13 to 3.04) · 496 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.27 (0 to 0.87) · 7,373 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4.1 · 152 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 1.08 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.542 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.484 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.565 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 15.8 · 327 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 24.2 · 703 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 61.1 · 289 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 36.3 · 665 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 25.4 · 856 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 19 · 978 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6.3 · 144 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 12.3 · 46 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 21.2 · 135 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.8 (10.1 to 18.6) · 129 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1.2 (0.9 to 1.5) · 531 cases | No different | Jan 2024 – Dec 2024 |
What patients said (704 patients answered, 24% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 2 |
| Communication about medicines | 2 |
| Discharge information | 3 |
| Overall hospital rating | 2 |
| Quietness | 1 |
| Recommend hospital | 3 |
| Room was "always" clean | 66% |
| Nurses "always" communicated well | 75% |
| Doctors "always" communicated well | 71% |
| Staff "always" explained | 54% |
| Yes, staff "did" give patients this information | 83% |
| Yes, staff "did" give patients information about help after discharge | 81% |
| Doctors "always" explained things so they could understand | 66% |
| Doctors "always" listened carefully | 69% |
| Doctors "always" treated them with courtesy and respect | 78% |
| Patients who gave a rating of "9" or "10" (high) | 63% |
| Staff "always" explained new medications | 68% |
| Nurses "always" explained things so they could understand | 69% |
| Nurses "always" listened carefully | 73% |
| Nurses "always" treated them with courtesy and respect | 82% |
| "Always" quiet at night | 38% |
| "YES", patients would definitely recommend the hospital | 67% |
| Staff "always" explained possible side effects | 40% |
| Yes, staff "did" give patients information about possible symptoms | 86% |
Original Medicare doctor bills
$25,128
Medicare paid this office $25,128 for 160 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for lens surgery | 32 | $3,394 | $106 |
| Anesthesia for other procedure on large bowel using an endoscope | 27 | $3,039 | $113 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 17 | $1,879 | $111 |
| Anesthesia for exam of colon using an endoscope | 12 | $1,246 | $104 |
Procedures year by year
| Procedure | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|
| Insertion of artery tube for blood sampling or infusion through skin | 12 | – | – | – | – | – |
Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.
Who their Medicare patients are
160 Original Medicare patients in 2024. Average age 74 · Women 56% · Also on Medicaid 11% · Health risk score 0.97. At or below the middle of the specialty; the typical anesthesiology clinician is at 1.54.
Conditions among them: High blood pressure 71% · Diabetes 31% · Atrial fibrillation 21% · Cancer 19% · Coronary heart disease 18% · Chronic kidney disease 18% · Depression 12% · Heart failure 11% · Stroke 7%.
The office billed $379,250, Medicare allowed $31,314 and paid $25,128; for 173 services of 34 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 160 | 173 | 74 | 0.97 | $379,250 | $25,128 |
| 2023 | 172 | 185 | 75 | 1.08 | $347,614 | $29,804 |
| 2022 | 190 | 221 | 75 | 0.97 | $383,614 | $33,632 |
| 2021 | 216 | 230 | 75 | 1.08 | $409,400 | $36,719 |
| 2020 | 195 | 242 | 75 | 1.31 | $436,592 | $38,407 |
| 2019 | 258 | 366 | 75 | 1.45 | $564,619 | $59,172 |
| 2018 | 233 | 273 | 74 | 1.23 | $342,545 | $43,752 |
| 2017 | 172 | 211 | 74 | 1.38 | $266,162 | $38,837 |
| 2016 | 172 | 221 | 74 | 1.44 | $263,076 | $39,519 |
| 2015 | 171 | 231 | 72 | 1.32 | $229,790 | $37,024 |
| 2014 | 153 | 229 | 74 | 1.26 | $245,388 | $40,887 |
| 2013 | 162 | 270 | 74 | 1.49 | $260,733 | $39,644 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 5 services
| Anesthesia for other procedure on large bowel using an endoscope | 42 | $4,679 | $111 |
| Anesthesia for lens surgery | 27 | $3,100 | $115 |
| Anesthesia for retinal surgery | 12 | $2,609 | $217 |
| Anesthesia for procedure on small and large bowel using an endoscope | 11 | $1,354 | $123 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 11 | $1,240 | $113 |
2022: 4 services
| Anesthesia for other procedure on large bowel using an endoscope | 43 | $5,691 | $132 |
| Anesthesia for lens surgery | 40 | $4,528 | $113 |
| Anesthesia for procedure on small and large bowel using an endoscope | 19 | $2,542 | $134 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 15 | $1,751 | $117 |
2021: 4 services
| Anesthesia for lens surgery | 59 | $7,541 | $120 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 26 | $3,394 | $126 |
| Anesthesia for other procedure on large bowel using an endoscope | 23 | $3,058 | $133 |
| Anesthesia for procedure on small and large bowel using an endoscope | 16 | $2,334 | $146 |
2020: 5 services
| Anesthesia for lens surgery | 51 | $6,544 | $126 |
| Anesthesia for other procedure on large bowel using an endoscope | 23 | $3,180 | $138 |
| Anesthesia for procedure on small and large bowel using an endoscope | 12 | $1,875 | $156 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 13 | $1,675 | $129 |
| Ultrasonic guidance for needle placement | 13 | $381 | $29 |
2019: 8 services
| Anesthesia for lens surgery | 57 | $7,163 | $126 |
| Anesthesia for procedure for total knee joint replacement | 17 | $5,800 | $341 |
| Anesthesia for other procedure on lower abdomen | 12 | $3,285 | $274 |
| Anesthesia for other procedure on upper abdomen | 12 | $3,260 | $272 |
| Anesthesia for retinal surgery | 17 | $3,044 | $179 |
| Anesthesia for other procedure on large bowel using an endoscope | 14 | $1,864 | $133 |
| Ultrasonic guidance for needle placement | 28 | $839 | $29 |
| Insertion of artery tube for blood sampling or infusion through skin | 12 | $471 | $39 |
2018: 4 services
| Anesthesia for lens surgery | 56 | $6,890 | $123 |
| Anesthesia for other procedure on large bowel using an endoscope | 26 | $3,499 | $135 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 15 | $1,795 | $120 |
| Anesthesia for exam of colon using an endoscope | 14 | $1,578 | $113 |
2017: 3 services
| Anesthesia for procedure on lower intestine using an endoscope | 27 | $3,791 | $140 |
| Anesthesia for lens surgery | 29 | $3,610 | $124 |
| Anesthesia for retinal surgery | 14 | $2,968 | $212 |
2016: 4 services
| Anesthesia for other procedure on upper abdomen | 12 | $3,679 | $307 |
| Anesthesia for lens surgery | 25 | $3,053 | $122 |
| Anesthesia for procedure on lower intestine using an endoscope | 14 | $2,069 | $148 |
| Ultrasonic guidance for blood vessel access | 11 | $141 | $13 |
2015: 5 services
| Anesthesia for procedure on lower intestine using an endoscope | 21 | $2,989 | $142 |
| Anesthesia for lens surgery | 16 | $2,005 | $125 |
| Anesthesia for other procedure on lower leg, ankle, and foot bones | 11 | $1,638 | $149 |
| Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) | 11 | $622 | $57 |
| Ultrasonic guidance for needle placement | 20 | $593 | $30 |
2014: 4 services
| Anesthesia for lens surgery | 19 | $2,455 | $129 |
| Anesthesia for procedure on lower intestine using an endoscope | 13 | $1,708 | $131 |
| Insertion of artery tube for blood sampling or infusion through skin | 14 | $624 | $45 |
| Ultrasonic guidance for needle placement | 13 | $389 | $30 |
2013: 7 services
| Anesthesia for procedure on lower intestine using an endoscope | 25 | $3,164 | $127 |
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 13 | $1,763 | $136 |
| Anesthesia for other procedure on skin of arms, legs, and front body | 11 | $1,394 | $127 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 12 | $888 | $33 |
| Continuous infusion of anesthetic agent and/or steroid into thigh nerve (femoral nerve) through catheter | 11 | $649 | $59 |
| Ultrasonic guidance for needle placement | 21 | $583 | $28 |
| Insertion of artery tube for blood sampling or infusion through skin | 12 | $517 | $43 |
Money from drug and device companies
$245 in 2025
| 2025 | 2 | 2 | None | $245 |
| 2024 | 1 | 2 | None | $155 |
| 2023 | 3 | 3 | None | $251 |
| 2019 | 1 | 1 | None | $133 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Pacira Pharmaceuticals | Exparel | $124 | 1 payment
|
| Vertex Pharmaceuticals | Journavx | $122 | 1 payment
|
See all 2 published payments
| Pacira Pharmaceuticals | Meals · 2025-10-21 | Exparel | $124 |
| Vertex Pharmaceuticals | Meals · 2025-07-10 | Journavx | $122 |
See earlier years (2024, 2023, 2019)
2024: $155
| Abiomed | Impella | $155 | 2 payments
|
2023: $251
| Fisher & Paykel Healthcare | Fisher & Paykel Healthcare | $130 | 1 payment
|
| Trevena | Olinvyk | $100 | 1 payment
|
| Merck Sharp & Dohme | Bridion | $20 | 1 payment
|
2019: $133
| Merck Sharp & Dohme | Bridion | $133 | 1 payment
|
Professional record
- NPI
- 1932132974
- Licence
- CA G76604California G76604: Current · expires 2026-12-31
- Trained
- Stanford University School of Medicine, 1991 · 35 years ago
- Group
- G2 Anesthesia PC
- Gender
- Male
More record details
- Sole proprietor
- No
- Medicaid ID
- CA 00G766404
- Taxonomy
- Federal specialty code 207L00000X (207L00000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2006-07-09
- NPI last updated
- 2020-01-30
- NPI record certified
- 2020-01-30
This is when the NPI record was last certified, not a medical board exam.