Christian N Athanassious, MD

1 location · Santa Rosa Orthopaedic Medical Group Inc · 7 clinicians in this group

Hospitals listed: 058189 · Adventist Health Ukiah Valley · Healdsburg Hospital · Petaluma Valley Hospital · Providence Santa Rosa Memorial Hospital · Sutter Santa Rosa Regional Hospital. That is not proof they admit you there this week.

Licence A124589 · Current

Licensed to practise in California · since 2013 · expires 2026-11-30 · Drexel University College of Medicine.

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

Surgery centers they own

• Santa Rosa Surgery Center, LP dba Santa Rosa Surgery and Endoscopy CenterAmbulatory Surgery Center · Santa Rosa, CA1% owner since 2023 · accredited by AAAHC
  Accreditation Renewed5 inspections, 1 with deficiencies · last 2025-03-03

5 hospitals

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

• Adventist Health Ukiah ValleyUkiah, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Adventist Health, which runs 28 hospitals in 3 statesPatients rate it 3 of 5 · 66% would definitely recommend it
  Overall rating: 4 of 5 starsWorse than the national rate — Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy: 7.9 (5.8 to 10.5) · 253 cases, Jan 2024 – Dec 2024
• Healdsburg HospitalHealdsburg, CACritical Access Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Providence, which runs 54 hospitals in 7 states77% would definitely recommend it
  No overall ratingNo measure marked better or worse than the national rate
• Petaluma Valley HospitalPetaluma, CAAcute Care Hospital · Voluntary non-profit - Other · No emergency department · Birthing-friendlyPart of Providence, which runs 54 hospitals in 7 statesPatients rate it 3 of 5 · 70% would definitely recommend it
  Overall rating: 4 of 5 starsNo measure marked better or worse than the national rate
• Providence Santa Rosa Memorial HospitalSanta Rosa, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Providence, which runs 54 hospitals in 7 statesPatients rate it 3 of 5 · 69% would definitely recommend it
  Overall rating: 3 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.375, Oct 2024 – Sep 2025
• Sutter Santa Rosa Regional HospitalSanta Rosa, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 79% would definitely recommend it
  Overall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.157, Oct 2024 – Sep 2025

$444,168

Medicare paid this office $444,168 for 520 people.

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

Procedures Medicare counted

Procedures year by year

Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.

Who their Medicare patients are

520 Original Medicare patients in 2024. Average age 73 · Under 65 10% · 85 and older 5% · Women 62% · Also on Medicaid 22% · Health risk score 1.08. At or below the middle of the specialty; the typical orthopedic surgery clinician is at 1.13.

Conditions among them: High blood pressure 68% · Depression 26% · Coronary heart disease 24% · Diabetes 21% · Atrial fibrillation 18% · Chronic kidney disease 16% · Cancer 13% · COPD 13% · Heart failure 12% · Stroke 7% · Dementia 3%.

The office billed $1,527,808, Medicare allowed $569,121 and paid $444,168; for 13,221 services of 56 kinds; $1,575 of it was for drugs given in the office and $442,592 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.

$25,366 in 2024

Medicaid paid $25,366 for 605 billed services this clinician did in 2024, up to 27 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.

$352

Pharmacies billed $352 in 2024.

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

34 generic and 0 brand-name prescriptions · $352 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.

$28,380 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

1043471279

Licence

CA A124589California A124589: Current · expires 2026-11-30

Group

Santa Rosa Orthopaedic Medical Group Inc

Video visits

Lists video visits

Gender

Male