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Katie Mares, PA

Physician Assistant · Santa Cruz

NPI 1700575446

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
Since medical school
4 years
Graduated 2022

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 Katie Mares’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 it
    Overall 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.

Every scored measure at Dominican Hospital
Postoperative sepsis rateComplications and deaths11.66 (8.02 to 15.3) · 412 casesWorseJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.168BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.169BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.489BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.01 (0.06 to 1.95) · 1,248 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.14 (0.85 to 1.43)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths134.37 (94.33 to 174.41) · 132 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2.4 · 54 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.2 · 137 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12 · 228 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths10.5 · 534 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths12.8 · 491 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 278 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.4 · 2,973 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.14 (0 to 0.34) · 7,510 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.21 (0.02 to 0.4) · 7,695 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.42 (1.44 to 5.4) · 1,594 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.26 (0 to 2.76) · 436 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths1.85 (0.4 to 3.29) · 1,474 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.73 (3 to 14.46) · 437 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.58 (0.13 to 3.03) · 343 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.57 (0 to 1.17) · 6,336 casesNo differentJul 2022 – Jun 2024
MRSA BacteremiaInfections0.615No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.937No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 212 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits22 · 505 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits45 · 237 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-13.5 · 594 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits1.9 · 510 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.9 · 473 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (3.4 to 7.8) · 126 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits13 (9.4 to 17.7) · 126 casesNo differentJan 2024 – Dec 2024
Rate of readmission for CABGUnplanned return visits12.7 · 43 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.7 · 143 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.1 (9.4 to 15.4) · 1,585 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.7 to 1.3) · 390 casesNo differentJan 2024 – Dec 2024

What patients said (774 patients answered, 23% of those asked)

Patient survey stars by topic at Dominican Hospital
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating3
Quietness1
Recommend hospital4
Share of patients giving the best answer at Dominican Hospital
Room was "always" clean73%
Nurses "always" communicated well79%
Doctors "always" communicated well81%
Staff "always" explained61%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge86%
Doctors "always" explained things so they could understand77%
Doctors "always" listened carefully79%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)67%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand76%
Nurses "always" listened carefully76%
Nurses "always" treated them with courtesy and respect85%
"Always" quiet at night32%
"YES", patients would definitely recommend the hospital68%
Staff "always" explained possible side effects48%
Yes, staff "did" give patients information about possible symptoms88%

Original Medicare doctor bills

$31,352

Medicare paid this office $31,352 for 354 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Return visit (30+ min)275$25,518$86
New patient visit (30+ min)62$4,357$70
Short return visit (20+ min)22$1,453$66

Who their Medicare patients are

354 Original Medicare patients in 2024. Average age 74 · Under 65 5% · 85 and older 7% · Women 62% · Also on Medicaid 16% · Health risk score 1.05. At or below the middle of the specialty; the typical physician assistant clinician is at 1.31.

Conditions among them: High blood pressure 59% · Depression 23% · Diabetes 20% · Coronary heart disease 20% · Chronic kidney disease 18% · Cancer 18% · Atrial fibrillation 18% · COPD 12% · Heart failure 11% · Dementia 4% · Stroke 4%.

The office billed $142,565, Medicare allowed $42,923 and paid $31,352; for 384 services of 6 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

Original Medicare by year
2024354384741.05$142,565$31,352
20234444750.80$15,918$3,758

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

Original Medicare services billed in 2023
Return visit (30+ min)24$2,249$94
New patient visit (30+ min)19$1,443$76

Drugs they prescribed that Part D paid

$210,457

Pharmacies billed $210,457 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 885) in 2024. At or below the middle of the specialty; the typical physician assistant clinician is at 1%.

742 generic and 143 brand-name prescriptions · $210,457 in drug cost · 22 antibiotic prescriptions to 15 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Largest Part D drug costs
Sod Sulf-Potass Sulf-Mag Sulf60$4,375$73
Gavilyte-G273$4,291$16
Omeprazole148$1,822$12
Peg-3350 and Electrolytes92$1,480$16
Pantoprazole71$1,108$16
See all 8 drugs
Every Part D drug this clinician prescribed
Sod Sulf-Potass Sulf-Mag Sulf60$4,375$73
Gavilyte-G273$4,291$16
Omeprazole148$1,822$12
Peg-3350 and Electrolytes92$1,480$16
Pantoprazole71$1,108$16
Cholestyramine11$1,043$95
Famotidine39$455$12
Lactulose33$82$2

Year by year

Part D prescribing by year
20248855780% (0)16%$210,457
20231341270% (0)22%$3,547

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 3 drugs

Part D drugs prescribed in 2023
Gavilyte-G80$1,435$18
Sod Sulf-Potass Sulf-Mag Sulf14$1,063$76
Peg-3350 and Electrolytes20$364$18

Professional record

NPI
1700575446
Licence
CA 62677
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Physician assistant (363A00000X)
Mailing address
325 Distel Cir, Los Altos, CA, 94022
NPI first listed
2023-05-08
NPI last updated
2023-09-29
NPI record certified
2023-09-29

This is when the NPI record was last certified, not a medical board exam.