Zheng Chen, OD

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

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

9 plans · 4 carriers

Licence C33830 · Cancelled

Licence status: Cancelled · since 1971 · University of Kentucky College of Medicine.

License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. No practice is permitted.

Matched on the licence number without its letter prefix; check the name before relying on it.

Public record actions

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

$28,730

Medicare paid this office $28,730 for 232 people.

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

Who their Medicare patients are

232 Original Medicare patients in 2024. Average age 73 · Under 65 7% · 85 and older 11% · Women 52% · Also on Medicaid 32% · Health risk score 1.21. Above the middle of the specialty; the typical optometry clinician is at 0.97.

Conditions among them: High blood pressure 72% · Diabetes 29% · Coronary heart disease 22% · Chronic kidney disease 19% · Cancer 19% · Depression 16% · Heart failure 14% · COPD 14% · Atrial fibrillation 13% · Stroke 10%.

The office billed $164,606, Medicare allowed $43,875 and paid $28,730; for 462 services of 14 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 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.

$235 in 2024

Medicaid paid $235 for 37 billed services this clinician did in 2024, up to 13 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.

$28,753

Pharmacies billed $28,753 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 428) in 2024. At or below the middle of the specialty; the typical optometry clinician is at 0%.

260 generic and 168 brand-name prescriptions · $28,753 in drug cost.

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.

$60 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.

Medicare did not publish checkup rates for this clinician.

NPI

1033442306

Licence

CA 33830TCalifornia C33830: Cancelled

Trained

New England College of Optometry, 2009

Group

Stanford Health Care

Gender

Female