Ronald S Greenwald, MD

4 locations · County of San Mateo · 316 clinicians in this group

Hospitals listed: El Camino Health · San Mateo Medical Center. That is not proof they admit you there this week.

31 plans · 8 carriers

Licence G56400 · Current

Licensed to practise in California · since 1985 · expires 2027-10-31 · Rosalind Franklin University, the Chicago Medical School.

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

Surgery centers they own

• Fremont ASC Partners, LLCAmbulatory Surgery Center · Fremont, CA6.76% owner since 2012 · accredited by AAAHC
  Initial Accreditation3 inspections, 3 with deficiencies · last 2016-05-23: Requirements Met

2 hospitals

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

• El Camino HealthMountain View, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency department · Birthing-friendlyPart of El Camino Health, which runs 2 hospitalsPatients rate it 4 of 5 · 80% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.291, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.393, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0, Oct 2024 – Sep 2025
• San Mateo Medical CenterSan Mateo, CAAcute Care Hospital · Government - Local · Has an emergency departmentPart of San Mateo County HealthPatients rate it 3 of 5 · 68% would definitely recommend it
  No overall ratingNo measure marked better or worse than the national rate

$10,406

Medicare paid this office $10,406 for 23 people. Most of that is long return visits and Botox.

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

Procedures Medicare counted

Who their Medicare patients are

23 Original Medicare patients in 2024. Average age 78 · Health risk score 0.73. At or below the middle of the specialty; the typical neurosurgery clinician is at 1.46.

Conditions among them: High blood pressure 75%.

The office billed $38,936, Medicare allowed $13,623 and paid $10,406; for 45 services of 11 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.

$2,962

Pharmacies billed $2,962 in 2024.

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

Opioids were 8% of their Part D prescriptions (15 of 181) in 2024. At or below the middle of the specialty; the typical neurosurgery clinician is at 28%.

180 generic and fewer than 11 brand-name prescriptions · $2,962 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.

$13 in 2019

A payment is not proof that care is biased.

NPI

1316954191

Licence

CA G56400California G56400: Current · expires 2027-10-31

Trained

Chicago College of Medicine and Surgery, 1979

Group

County of San Mateo

Gender

Male