Lindsay A Marsh, CNA
Certified Registered Nurse Anesthetist (Crna) · Oceanside
- Medicare standing
- 1 flag on the record
- Listed below.
- Plans that list them
- Not verified
- Not the same as out of network.
- Offices
- 2
On the public record
- Medicare does not list them as allowed to order and refer
Offices
2 locations · Darin Rentz DO PC · Sound Physicians Anesthesiology of California PC
Hospitals listed: Tri-City Medical Center. 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 Lindsay A Marsh’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.
- Tri-City Medical CenterOceanside, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency departmentPart of Tri City Healthcare DistrictPatients rate it 2 of 5 · 52% would definitely recommend itOverall rating: 1 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.39, Oct 2024 – Sep 2025
See every measure and the patient survey for Tri-City Medical Center
Behind the star rating — Deaths: 0 better, 7 the same, 0 worse of 7 measures. Safety: 1 better, 6 the same, 0 worse of 7 measures. Readmissions: 1 better, 8 the same, 1 worse of 10 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 | 0.39 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.94 (0 to 1.97) · 536 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.93 (0.56 to 1.31) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 185.5 (123.11 to 247.89) · 32 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for COPD patientsComplications and deaths | 10.1 · 84 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 13 · 109 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 10.8 · 156 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 17.1 · 255 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 15.6 · 251 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 4.4 · 2,347 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.16 (0 to 0.37) · 3,248 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.28 (0.08 to 0.49) · 3,281 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3 (0.72 to 5.29) · 760 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.53 (0 to 3.19) · 279 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 1.93 (0.35 to 3.5) · 743 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 9.69 (1.61 to 17.78) · 289 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.31 (1.29 to 9.34) · 268 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.71 (0.2 to 3.22) · 176 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.52 (0 to 1.35) · 2,305 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4.9 · 59 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 1.052 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.974 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 1.103 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.522 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 15.1 · 215 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 21.7 · 298 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -7.8 · 116 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 29.1 · 191 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 14 · 287 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 18 · 447 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.6 (3.5 to 8.9) · 32 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 10.7 (7.2 to 15.6) · 32 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6.8 · 62 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 11.9 · 31 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20 · 172 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.1 (9.4 to 17.5) · 36 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.9 (0.7 to 1.2) · 257 cases | No different | Jan 2024 – Dec 2024 |
What patients said (403 patients answered, 23% of those asked)
| Cleanliness | 3 |
| Nurse communication | 2 |
| Doctor communication | 2 |
| Communication about medicines | 2 |
| Discharge information | 2 |
| Overall hospital rating | 2 |
| Quietness | 2 |
| Recommend hospital | 2 |
| Room was "always" clean | 64% |
| Nurses "always" communicated well | 71% |
| Doctors "always" communicated well | 72% |
| Staff "always" explained | 59% |
| Yes, staff "did" give patients this information | 83% |
| Yes, staff "did" give patients information about help after discharge | 79% |
| Doctors "always" explained things so they could understand | 68% |
| Doctors "always" listened carefully | 70% |
| Doctors "always" treated them with courtesy and respect | 79% |
| Patients who gave a rating of "9" or "10" (high) | 53% |
| Staff "always" explained new medications | 71% |
| Nurses "always" explained things so they could understand | 69% |
| Nurses "always" listened carefully | 68% |
| Nurses "always" treated them with courtesy and respect | 77% |
| "Always" quiet at night | 39% |
| "YES", patients would definitely recommend the hospital | 52% |
| Staff "always" explained possible side effects | 48% |
| Yes, staff "did" give patients information about possible symptoms | 87% |
Original Medicare doctor bills
$24,247
Medicare paid this office $24,247 for 126 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for other procedure on large bowel using an endoscope | 17 | $1,327 | $78 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 13 | $1,236 | $95 |
| Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance | 18 | $938 | $52 |
| Insertion of artery tube for blood sampling or infusion through skin | 12 | $414 | $35 |
Who their Medicare patients are
126 Original Medicare patients in 2024. Average age 74 · Women 52% · Also on Medicaid 22% · Health risk score 1.79. Above the middle of the specialty; the typical certified registered nurse anesthetist (crna) clinician is at 1.45.
Conditions among them: High blood pressure 75% · Coronary heart disease 33% · Diabetes 28% · Cancer 25% · Atrial fibrillation 25% · Depression 24% · Heart failure 23% · Chronic kidney disease 22% · COPD 16% · Dementia 12% · Stroke 11%.
The office billed $239,743, Medicare allowed $31,490 and paid $24,247; for 165 services of 44 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 | 126 | 165 | 74 | 1.79 | $239,743 | $24,247 |
| 2023 | 108 | 157 | 75 | 1.65 | $261,440 | $27,527 |
| 2022 | 71 | 75 | 73 | 2.24 | $64,111 | $7,448 |
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: 2 services
| Anesthesia for other procedure on lower abdomen | 11 | $2,707 | $246 |
| Insertion of artery tube for blood sampling or infusion through skin | 20 | $711 | $36 |
2022: 1 service
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 20 | $1,303 | $65 |
Money from drug and device companies
$51 in 2025
| 2025 | 1 | 3 | None | $51 |
| 2024 | 1 | 1 | None | $24 |
| 2023 | 1 | 1 | None | $30 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Abbvie | Mavyret | $51 | 3 payments
|
See all 3 published payments
| Abbvie | Meals · 2025-11-17 | Mavyret | $16 |
| Abbvie | Meals · 2025-10-08 | Mavyret | $15 |
| Abbvie | Meals · 2025-01-28 | Mavyret | $21 |
See earlier years (2024, 2023)
2024: $24
| Abbvie | Mavyret | $24 | 1 payment
|
2023: $30
| GlaxoSmithKline | Trelegy Ellipta | $30 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 75.0 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1003556184
- Licence
- CA NA95001721
- Group
- Darin Rentz DO PC · Sound Physicians Anesthesiology of California PC
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 367500000X (367500000X)
- Mailing address
- 6840 Camino Del Rey, Bonsall, CA, 92003
- NPI first listed
- 2022-03-29
- NPI last updated
- 2026-02-11
- NPI record certified
- 2026-02-11
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 3921 Waring Rd Ste B, Oceanside, CA, 92056