Serena Zhao Yang-Loudin, MD

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

Hospitals listed: John Muir Medical Center - Walnut Creek Campus · Stanford Health Care · Stanford Health Care Tri-Valley. That is not proof they admit you there this week.

9 plans · 1 carrier

Licence A156420 · Current

Licensed to practise in California · since 2018 · expires 2028-04-30 · Baylor College of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

3 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
  Overall rating: 2 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 2.01 (1.17 to 2.85) · 2,206 cases, Jul 2022 – Jun 2024Worse than the national rate — Death rate among surgical inpatients with serious treatable complications: 222.42 (177.82 to 267.02) · 120 cases, Jul 2022 – Jun 2024Worse than the national rate — Pressure ulcer rate: 1.4 (0.91 to 1.9) · 9,764 cases, Jul 2022 – Jun 2024Worse than the national rate — SSI - Colon Surgery: 2.734, Oct 2024 – Sep 2025Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.536, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.341, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.455, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.245, Oct 2024 – Sep 2025
• 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
• Stanford Health Care Tri-ValleyPleasanton, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Stanford Health Care, which runs 3 hospitalsPatients rate it 3 of 5 · 74% would definitely recommend it
  Overall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.178, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.237, Oct 2024 – Sep 2025

$215,820

Medicare paid this office $215,820 for 361 people.

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

Procedures Medicare counted

Who their Medicare patients are

361 Original Medicare patients in 2024. Average age 76 · Under 65 5% · 85 and older 16% · Women 55% · Also on Medicaid 22% · Health risk score 1.21. At or below the middle of the specialty; the typical urology clinician is at 1.36.

Conditions among them: High blood pressure 69% · Depression 25% · Diabetes 24% · Chronic kidney disease 23% · Cancer 22% · Atrial fibrillation 20% · Coronary heart disease 19% · Heart failure 13% · COPD 13% · Stroke 9% · Dementia 8%.

The office billed $938,323, Medicare allowed $283,204 and paid $215,820; for 8,305 services of 79 kinds; $24,953 of it was for drugs given in the office and $190,867 for care.

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 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.

$312,609

Pharmacies billed $312,609 in 2024.

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

Opioids were 2% of their Part D prescriptions (24 of 1,618) in 2024. At or below the middle of the specialty; the typical urology clinician is at 2%.

1,199 generic and fewer than 11 brand-name prescriptions · $312,609 in drug cost · 269 antibiotic prescriptions to 143 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.

Year by year

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

$809 in 2025

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

A payment is not proof that care is biased.

17 measures · 2023

Medicare asked this office to report how often certain checkups happened in 2023. This is not a grade for the doctor. A specialist’s patients may not need every screening.

What the office says it does

Boxes the office ticked on its Medicare worksheet for 2023. Nobody checks these.

• Agreed to federal review of their records system
• Checks the state prescription-drug database before prescribing
• Did a security review of patient data
• Exchanges records both ways with other health systems
• Improved the patient portal
• Lets patients read their visit notes
• Shows lab and imaging costs when ordering tests
• Uses standard treatment protocols
• Exempt from electronic case reporting
• Exempt from immunization registry reporting

NPI

1649613365

Licence

CA A156420California A156420: Current · expires 2028-04-30

Group

Stanford Health Care

Video visits

Lists video visits

Gender

Female