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Shann Mika B Ruiz, NP

Nurse Practitioner · Stanford

NPI 1689140139

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. 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 Shann Mika B Ruiz’s office at (650) 723-4000 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.

  • Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
    Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 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 Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$51,258

Medicare paid this office $51,258 for 209 people. Most of that is long return visits and Botox.

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

Largest Original Medicare bills
Long return visit (40+ min)151$37,857$146
Return visit (30+ min)59$6,397$93
Long return visit (40+ min)42$5,884$109

Who their Medicare patients are

209 Original Medicare patients in 2024. Average age 76 · Women 17% · Also on Medicaid 19% · Health risk score 2.71. Above the middle of the specialty; the typical nurse practitioner clinician is at 1.42.

Conditions among them: Cancer 75% · High blood pressure 73% · Chronic kidney disease 40% · Coronary heart disease 33% · Diabetes 30% · Atrial fibrillation 18% · Heart failure 17% · Depression 12% · Dementia 8% · Stroke 8% · COPD 7%.

The office billed $316,235, Medicare allowed $65,950 and paid $51,258; for 408 services of 4 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
2024209408762.71$316,235$51,258
2023192321752.63$195,935$24,109
2022172269742.30$174,806$20,116
202185139742.20$83,547$10,150
20201522752.53$13,195$1,238

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)170$20,011$72
Long return visit (40+ min)36$4,013$100

2022: 2 services

Original Medicare services billed in 2022
Return visit (30+ min)139$16,247$74
Extended patient service without direct patient contact, first hour32$2,451$77

2021: 1 service

Original Medicare services billed in 2021
Return visit (30+ min)74$9,141$76

2020: 1 service

Original Medicare services billed in 2020
Return visit (30+ min)11$1,008$63

Medicaid work

$56 in 2024

Medicaid paid $56 for 12 billed services this clinician did in 2024, up to 12 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.

Largest Medicaid services in 2024
Long return visit (40+ min)12$56
Medicaid work by year
202412112$56

Drugs they prescribed that Part D paid

$3,582,563

Pharmacies billed $3,582,563 in 2024.

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

Opioids were 4% of their Part D prescriptions (36 of 953) in 2024. Above the middle of the specialty; the typical nurse practitioner clinician is at 0%.

662 generic and 291 brand-name prescriptions · $3,582,563 in drug cost · 11 antibiotic prescriptions.

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
Inlyta43$738,488$17,174
Cabometyx27$661,437$24,498
Xtandi38$500,098$13,160
Nubeqa29$359,062$12,381
Welireg13$307,545$23,657
See all 22 drugs
Every Part D drug this clinician prescribed
Inlyta43$738,488$17,174
Cabometyx27$661,437$24,498
Xtandi38$500,098$13,160
Nubeqa29$359,062$12,381
Welireg13$307,545$23,657
Abiraterone Acetate170$212,981$1,253
Orgovyx61$162,181$2,659
Erleada12$138,294$11,524
Eliquis18$17,753$986
Myrbetriq11$8,463$769
Xarelto13$7,710$593
Prednisone229$953$4
Tamsulosin21$486$23
Bicalutamide17$411$24
Ondansetron27$290$11
Dexamethasone12$262$22
Hydrocodone-Acetaminophen19$130$7
Prochlorperazine Maleate12$107$9
Oxycodone12$78$6
Hydroxyzine11$70$6
Amlodipine Besylate13$50$4
Lorazepam11$30$3

Year by year

Part D prescribing by year
20249531954% (36)31%$3,582,563
20239031864% (33)20%$2,731,672
20226741444% (28)20%$1,882,486
20216861343% (23)25%$1,948,870
20204251033% (14)32%$1,391,253
20195632NoneNone$60,305

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

See the drugs prescribed each year

2023: 17 drugs

Part D drugs prescribed in 2023
Fotivda26$729,774$28,068
Cabometyx18$477,494$26,527
Xtandi35$410,140$11,718
Inlyta18$328,600$18,256
Abiraterone Acetate168$287,652$1,712
Orgovyx38$102,732$2,703
Eliquis11$9,233$839
Entecavir13$2,168$167
Prednisone223$1,671$7
Prochlorperazine Maleate25$370$15
Dexamethasone31$340$11
Tamsulosin21$288$14
Ondansetron23$225$10
Oxycodone16$180$11
Amlodipine Besylate28$174$6
Gabapentin13$124$10
Lorazepam16$36$2

2022: 13 drugs

Part D drugs prescribed in 2022
Cabometyx27$652,516$24,167
Xtandi34$420,291$12,362
Erleada24$288,710$12,030
Abiraterone Acetate134$256,034$1,911
Orgovyx18$44,461$2,470
Eliquis11$5,921$538
Prednisone200$1,748$9
Ondansetron16$505$32
Bicalutamide14$458$33
Tamsulosin20$340$17
Gabapentin19$198$10
Prochlorperazine Maleate14$189$14
Amlodipine Besylate13$37$3

2021: 13 drugs

Part D drugs prescribed in 2021
Xtandi40$459,776$11,494
Erleada29$354,788$12,234
Abiraterone Acetate111$194,019$1,748
Inlyta14$189,411$13,529
Lysodren12$43,036$3,586
Prednisone141$1,568$11
Tamsulosin36$742$21
Bicalutamide27$705$26
Ondansetron21$654$31
Dexamethasone30$341$11
Gabapentin16$250$16
Entecavir15$211$14
Prochlorperazine Maleate12$185$15

2020: 16 drugs

Part D drugs prescribed in 2020
Erleada31$385,662$12,441
Afinitor14$230,338$16,453
Zytiga18$203,633$11,313
Xtandi13$162,573$12,506
Lynparza11$161,622$14,693
Abiraterone Acetate15$16,447$1,096
Entecavir11$7,381$671
Bicalutamide28$820$29
Tamsulosin18$618$34
Prednisone52$476$9
Ondansetron22$321$15
Dexamethasone16$250$16
Megestrol Acetate12$230$19
Prochlorperazine Maleate11$130$12
Amlodipine Besylate16$112$7
Omeprazole13$98$8

Money from drug and device companies

$523 in 2025

Industry payments by year
202555None$523
202434None$191
202311None$124
202233None$196
202111None$17

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
E.R. Squibb & Sons L.L.C.Opdivo$128
1 payment
  • Meals for Opdivo · 2025-02-11 · $128
Agios PharmaceuticalsPyrukynd$125
1 payment
  • Meals for Pyrukynd · 2025-12-05 · $125
EisaiLenvima$125
1 payment
  • Meals for Lenvima · 2025-02-05 · $125
Janssen BiotechRybrevant$115
1 payment
  • Meals for Rybrevant · 2025-05-13 · $115
Merck Sharp & DohmeKeytruda$31
1 payment
  • Meals for Keytruda · 2025-07-25 · $31
See all 5 published payments
Every published payment
Agios PharmaceuticalsMeals · 2025-12-05Pyrukynd$125
Merck Sharp & DohmeMeals · 2025-07-25Keytruda$31
Janssen BiotechMeals · 2025-05-13Rybrevant$115
E.R. Squibb & Sons L.L.C.Meals · 2025-02-11Opdivo$128
EisaiMeals · 2025-02-05Lenvima$125
See earlier years (2024, 2023, 2022, 2021)

2024: $191

Payments by company in 2024
Lexicon PharmaceuticalsInpefa$124
1 payment
  • Meals for Inpefa · 2024-02-21 · $124
PfizerInlyta$36
2 payments
  • Education for Inlyta · 2024-08-23 · $18
  • Education for Inlyta · 2024-04-05 · $18
Merck Sharp & DohmeKeytruda$31
1 payment
  • Meals for Keytruda · 2024-10-25 · $31

2023: $124

Payments by company in 2023
Exact SciencesCologuard Collection Kit$124
1 payment
  • Meals for Cologuard Collection Kit · 2023-10-11 · $124

2022: $196

Payments by company in 2022
E.R. Squibb & Sons L.L.C.Opdivo$112
1 payment
  • Meals for Opdivo · 2022-08-23 · $112
Bayer HealthCare PharmaceuticalsNubeqa$57
1 payment
  • Meals for Nubeqa · 2022-09-15 · $57
Myovant SciencesOrgovyx$28
1 payment
  • Meals for Orgovyx · 2022-08-18 · $28

2021: $17

Payments by company in 2021
Merck Sharp & DohmeKeytruda$17
1 payment
  • Meals for Keytruda · 2021-05-20 · $17

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1689140139
Licence
CA 95009787
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Nurse practitioner (363L00000X); Federal specialty code 363LA2200X (363LA2200X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2018-10-22
NPI last updated
2025-12-30
NPI record certified
2025-12-30

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

Extra NPI addresses: 200 Brannan St Apt 135, San Francisco, CA, 94107