Ashton R Grosso, DO
Hospitalist · Palo Alto
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Offices
- 3
Offices
3 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Looking this up.
Hospitals listed: Dominican Hospital. That is not proof they admit you there this week.
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Grosso’s office to ask if they take your plan before you enroll.
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.
- Dominican HospitalSanta Cruz, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of CommonSpirit Health, which runs 145 hospitals in 19 statesPatients rate it 4 of 5 · 68% would definitely recommend itOverall rating: 4 of 5 starsWorse than the national rate — Postoperative sepsis rate: 11.66 (8.02 to 15.3) · 412 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.168, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.169, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.489, Oct 2024 – Sep 2025
See every measure and the patient survey for Dominican Hospital
Behind the star rating — Deaths: 1 better, 7 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 1 better, 8 the same, 2 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Postoperative sepsis rateComplications and deaths | 11.66 (8.02 to 15.3) · 412 cases | Worse | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.168 | Better | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.169 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.489 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.01 (0.06 to 1.95) · 1,248 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.14 (0.85 to 1.43) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 134.37 (94.33 to 174.41) · 132 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.4 · 54 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.2 · 137 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 12 · 228 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 10.5 · 534 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 12.8 · 491 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 8.7 · 278 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.4 · 2,973 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.14 (0 to 0.34) · 7,510 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.21 (0.02 to 0.4) · 7,695 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.42 (1.44 to 5.4) · 1,594 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.26 (0 to 2.76) · 436 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 1.85 (0.4 to 3.29) · 1,474 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 8.73 (3 to 14.46) · 437 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.58 (0.13 to 3.03) · 343 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.57 (0 to 1.17) · 6,336 cases | No different | Jul 2022 – Jun 2024 |
| MRSA BacteremiaInfections | 0.615 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.937 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 16 · 212 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22 · 505 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 45 · 237 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -13.5 · 594 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 1.9 · 510 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.9 · 473 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.2 (3.4 to 7.8) · 126 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 13 (9.4 to 17.7) · 126 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission for CABGUnplanned return visits | 12.7 · 43 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.7 · 143 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.1 (9.4 to 15.4) · 1,585 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1 (0.7 to 1.3) · 390 cases | No different | Jan 2024 – Dec 2024 |
What patients said (774 patients answered, 23% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 3 |
| Quietness | 1 |
| Recommend hospital | 4 |
| Room was "always" clean | 73% |
| Nurses "always" communicated well | 79% |
| Doctors "always" communicated well | 81% |
| Staff "always" explained | 61% |
| Yes, staff "did" give patients this information | 87% |
| Yes, staff "did" give patients information about help after discharge | 86% |
| Doctors "always" explained things so they could understand | 77% |
| Doctors "always" listened carefully | 79% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 67% |
| Staff "always" explained new medications | 75% |
| Nurses "always" explained things so they could understand | 76% |
| Nurses "always" listened carefully | 76% |
| Nurses "always" treated them with courtesy and respect | 85% |
| "Always" quiet at night | 32% |
| "YES", patients would definitely recommend the hospital | 68% |
| Staff "always" explained possible side effects | 48% |
| Yes, staff "did" give patients information about possible symptoms | 88% |
Original Medicare doctor bills
$58,766
Medicare paid this office $58,766 for 210 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 159 | $39,628 | $95 |
| Hospital discharge day management, more than 30 minutes | 118 | $11,308 | $93 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 35 | $4,643 | $125 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 19 | $1,976 | $64 |
Who their Medicare patients are
210 Original Medicare patients in 2024. Average age 76 · Under 65 9% · 85 and older 21% · Women 47% · Also on Medicaid 45% · Health risk score 2.56. Above the middle of the specialty; the typical hospitalist clinician is at 2.49.
Conditions among them: High blood pressure 75% · Chronic kidney disease 47% · Heart failure 45% · Coronary heart disease 41% · Diabetes 40% · Atrial fibrillation 35% · Depression 34% · COPD 30% · Stroke 20% · Dementia 19% · Cancer 18%.
The office billed $234,867, Medicare allowed $74,909 and paid $58,766; for 629 services of 8 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 | 210 | 629 | 76 | 2.56 | $234,867 | $58,766 |
| 2023 | 311 | 940 | 77 | 2.15 | $352,335 | $92,446 |
| 2022 | 288 | 849 | 76 | 2.08 | $314,874 | $75,063 |
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
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 232 | $62,939 | $99 |
| Hospital discharge day management, more than 30 minutes | 163 | $16,769 | $96 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 51 | $7,314 | $143 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 11 | $1,378 | $66 |
| Hospital discharge day management, 30 minutes or less | 17 | $1,153 | $68 |
2022: 9 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 163 | $43,450 | $86 |
| Hospital discharge day management, more than 30 minutes | 96 | $9,073 | $90 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 44 | $7,088 | $161 |
| Initial hospital observation care per day, typically 70 minutes | 25 | $3,617 | $145 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 20 | $3,379 | $60 |
| Follow-up observation care per day, typically 35 minutes | 13 | $1,799 | $86 |
| Initial hospital observation care per day, typically 50 minutes | 12 | $1,330 | $111 |
| Hospital discharge day management, 30 minutes or less | 16 | $984 | $62 |
| Hospital observation care on day of discharge | 12 | $729 | $61 |
Medicaid work
$11,234 in 2024
Medicaid paid $11,234 for 219 billed services this clinician did in 2024, up to 28 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES | 193 | $9,594 |
| Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter | 26 | $1,640 |
| 2024 | 219 | 2 | 28 | $11,234 |
| 2023 | 521 | 2 | 30 | $30,309 |
| 2022 | 262 | 2 | 19 | $15,363 |
See the largest Medicaid services in earlier years
2023
| SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES | 449 | $26,493 |
| Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter | 72 | $3,817 |
2022
| SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES | 250 | $13,882 |
| 1ST HOSP IP/OBS HIGH 75 | 12 | $1,480 |
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 96.5 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1992201859
- Licence
- CA 20A19255
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Hospitalist (208M00000X); Family medicine (207Q00000X); Internal medicine (207R00000X)
- Mailing address
- 3400 Data Dr, Rancho Cordova, CA, 95670
- NPI first listed
- 2018-03-31
- NPI last updated
- 2025-10-23
- NPI record certified
- 2025-10-23
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 1301 Mission St, Santa Cruz, CA, 95060