Quick answers
- Does Adventist Health Sonora have an emergency room?
- Yes. The hospital’s official website lists an emergency room at Adventist Health Sonora. Medicare (CMS) data does not list emergency services for it. In a medical emergency, call 911.
- Where is Adventist Health Sonora?
- 1000 Greenley Road, Sonora, CA 95370, in Tuolumne County, California.
- What is the phone number of Adventist Health Sonora?
- (209) 536-5000, as listed by Medicare (CMS).
- What is the Medicare star rating of Adventist Health Sonora?
- 3 out of 5 stars in the CMS overall hospital quality rating (CMS data updated 2026-10-26).
- Does Medicare reduce its payments to Adventist Health Sonora for hospital-acquired conditions?
- Yes. For fiscal year 2026, CMS applies a 1-percent reduction to Medicare payments to Adventist Health Sonora under the Hospital-Acquired Condition Reduction Program (Total HAC Score: 0.6825; a lower score is better). It is an adjustment to what Medicare pays the hospital, not a charge to patients (CMS data released January 26, 2026).
Specialties and care areas[4][7][9][10][12]
- Behavioral Health
- Breast Care
- Cancer Care
- Dental Care
- Diabetes Management
- Digestive Health
- Ear, Nose, and Throat (ENT)
- Emergency Care
- Heart Care
- Maternity
- Occupational Health
- Orthopedics
- Podiatry
- Pulmonology
- Sleep Care
- Spine Care
- Surgery
- Urology
- Women's Health
- Wound Care
- Physical Therapy and Rehabilitation
- Skilled Nursing
- Imaging
- Home Care
- Cardiology
- Oncology
- Obstetrics
Conditions treated[7][9][10][14]
- Heart attack
- Stroke
- Heart failure
- Broken bones
- Head injuries
- Burns
- Difficulty breathing
- Appendicitis
- Gallbladder attacks
- Cancer
Treatments[9][10][11][13]
- Chemotherapy
- Immunotherapy
- Radiation therapy
- Computed tomography (CT)
- Magnetic resonance imaging (MRI)
- Mammography and 3D tomosynthesis
- Nuclear medicine
- PET/CT
- Ultrasound
- X-ray
- Echocardiogram
- Stress test
- Cardiac catheterization
- Percutaneous coronary intervention (PCI)
- Total joint replacement
- Robotic-assisted knee replacement
- Carpal tunnel release
Procedures[13][14]
- Appendectomy
- Hernia repair
- Mastectomy
- Colectomy
- Gastric bypass
- Splenectomy
- Tracheostomy
- Laparoscopic surgery
- Robotic-assisted surgery
- Emergency surgery
- Arthroscopic surgery for knees and shoulders
Programs and centers[6][7][10][12][13]
- Acute Stroke Ready Hospital
- Diana J. White Cancer Institute oncology practice (QOPI certified)
- Geriatric Emergency Department Accreditation (ACEP)
- Heart Failure Resource Center
- Diabetes Resource Center
- Lipid Resource Center
- Joint Replacement Program
- Birth Center
Emergency care (hospital website)[6][7]
| Emergency room | Yes |
|---|---|
| Open 24/7 | Yes |
| Stroke designation | Acute Stroke Ready Hospital (The Joint Commission) |
Visiting and practical information
| Visiting | Visitors may visit at any time, subject to department limits and nursing staff discretion[5] |
|---|---|
| Parking | Free parking for patients, visitors and employees[5] |
| Interpreters and languages | Free interpreters: certified medical interpreters, ASL video, other languages via Language Line[8] |
| Patient portal | Adventist Health MyChart |
Recognition[6][7]
- The Joint Commission accreditation
- Acute Stroke Ready Hospital Certification (Joint Commission)
- Blue Distinction Center for Spine Surgery
- Baby-Friendly Hospital (Baby-Friendly USA)
- Leapfrog A Hospital Safety Grade (Spring 2025, Fall 2024)
- Top 100 Rural and Community Hospital (Chartis, 2023)
- Accreditation from The Joint Commission
- Geriatric Emergency Department Accreditation (American College of Emergency Physicians)
Doctors and clinicians (511)
511 doctors and other clinicians list Adventist Health Sonora as a hospital where they work, in Medicare's official clinician data (updated 2026-10-02). It is not a complete staff list.
Main specialties
- Nurse Practitioner60
- Physician Assistant46
- Internal Medicine34
- Family Practice31
- Diagnostic Radiology29
- Orthopedic Surgery29
- Cardiovascular Disease (Cardiology)26
- Pathology20
- General Surgery20
- Emergency Medicine18
- Hospitalist15
- Gastroenterology15
Doctors with a page on this site (511)
- Aashir Shah, MDPulmonary Disease
- Abdullah M. Khalid, MDHospitalist
- Abigail L. Limov, DOEmergency Medicine
- Abulaiti Adili, MDHospitalist
- Adam Rosendorff, MDInternal Medicine
- Adithya Chennamadhavuni, MDHematology/Oncology
- Ajay K. Toppur Ramanakumar, MDCardiovascular Disease (Cardiology)
- Alan A. Garvin, MDCardiovascular Disease (Cardiology)
- Alan Levine, MDAnesthesiology
- Alan P. Jakubowski, MDPhysical Medicine and Rehabilitation
- Alan Peters, MDPsychiatry
- Alberto A. Bolanos, MDOrthopedic Surgery
- Alem Abraha, MDFamily Practice
- Alexa L. Calfee, MDObstetrics/Gynecology
- Alexander A. Theologis, MDOrthopedic Surgery
- Alexander P. Sah, MDOrthopedic Surgery
- Alexander T. Pingree, DOEmergency Medicine
- Alexandra M. Burgar, MDOrthopedic Surgery
- Alina Bhatti, NPNurse Practitioner
- Alireza Abdolmohammadi, MDMedical Oncology
- Ambrish S. Ghumman, MDGastroenterology
- Amin Esfahani, MDDermatology
- Amy R. Buckowski, MDEmergency Medicine
- Amy Rogers, NPNurse Practitioner
And 487 more: the button below opens the full list.
Names link to the doctor’s page on this site when there is one, otherwise to the official NPI Registry record (U.S. Department of Health and Human Services). Find a doctor · Source: CMS Facility Affiliation Data
Other emergency rooms nearby
Hospitals that list emergency services, by straight-line distance (not driving distance).
- Mark Twain Medical Center22 mi · San Andreas, CA · Critical Access Hospital
- Oak Valley Hospital District31 mi · Oakdale, CA · Acute Care Hospital
- Sutter Amador Hospital34 mi · Jackson, CA · Acute Care Hospital
- John C Fremont Healthcare District39 mi · Mariposa, CA · Critical Access Hospital
- Memorial Medical Center39 mi · Modesto, CA · Acute Care Hospital
Find the closest emergency room to where you are → · Compare ER wait times
Other hospitals near Sonora
- Encompass Health Rehabilitation Hospital of Modesto38 mi · Modesto, CA · Inpatient Rehabilitation Hospital
Nursing homes, hospice, home health and dialysis nearby
Medicare-certified providers within 25 miles, by straight-line distance. Hospice and home health care is given at home: their address is the office.
Nursing homes
- Golden Sonora Care Center0.2 mi · Sonora, CA · 1 of 5 stars
- Adventist Health Sonora - D/P SNF1.1 mi · Sonora, CA · 5 of 5 stars
- Golden San Andreas Care Center22 mi · San Andreas, CA · 2 of 5 stars
All nursing homes in the state →
Hospice providers
- Adventist Health Home Care Services1.3 mi · Sonora, CA · 5 of 5 stars
All hospice providers in the state →
Home health agencies
- Adventist Health Home Care Services1.3 mi · Sonora, CA · 3.5 of 5 stars
All home health agencies in the state →
Dialysis facilities
- SHC Sonora11 mi · Jamestown, CA · 3 of 5 stars
Outpatient surgery centers nearby
Medicare-certified ambulatory surgery centers within 25 miles, by straight-line distance.
- Sonora Eye Surgery Center1.3 mi · Sonora, CA
Community care nearby
Health centers, clinics, urgent care and pharmacies closest to this hospital, by straight-line distance, from official HRSA, Medicare and NPI Registry data. In a medical emergency, call 911.
Community health centers
- M A C T Health Board Incorporated1.3 mi · Sonora, CA · Community health center
- M A C T Health Board Incorporated1.3 mi · Sonora, CA · Community health center
- M A C T Health Board Incorporated1.3 mi · Sonora, CA · Community health center
Clinics and urgent care
- Adventist Health Physicians Network1.3 mi · Sonora, CA · Urgent care center
- Adventist Health Sonora RHC1.3 mi · Sonora, CA · Rural health clinic
- County of Tuolumne1.3 mi · Sonora, CA · Urgent care center
Pharmacies
- Bob's Greenley Pharmacy Inc1.3 mi · Sonora, CA · Community/retail pharmacy
- M A C T Health Board, Incorporated1.3 mi · Sonora, CA · Community/retail pharmacy
- Safeway Inc1.3 mi · Sonora, CA · Community/retail pharmacy
Assisted living nearby
Licensed homes from the official state license list, by straight-line distance.
- Skyline Place Senior Living1.3 mi · Sonora, CA
- Foothill Village Senior Living13 mi · Angels Camp, CA
About the Medicare star rating
CMS (the federal Medicare agency) gives many hospitals an overall rating from 1 to 5 stars, based on measures of mortality, safety, readmissions, patient experience and timely care. It is one piece of information: ask your doctor what matters for your care. See the full Medicare profile →
Medicare quality data
What Adventist Health Sonora reported to Medicare (CMS), the federal agency that publishes these results for hospitals nationwide. These are averages for many patients, not a prediction for any one person: ask your doctor what matters for your care. In a medical emergency, call 911.
What patients said (patient survey)
What this means: Patients who stayed overnight answered a national survey (HCAHPS) about their stay. More stars mean patients reported a better experience than at other hospitals. The percentages show how often patients gave the best answer, next to the national average.
| Summary star rating (all survey topics) | 3 of 5 stars |
|---|---|
| Overall rating of the hospital | 3 of 5 stars |
| Would recommend the hospital | 3 of 5 stars |
| Nurses communicated well | 4 of 5 stars |
| Doctors communicated well | 3 of 5 stars |
| Patients got help quickly from staff | 3 of 5 stars |
| Staff explained medicines | 3 of 5 stars |
| Information about recovery at home | 4 of 5 stars |
| Room and bathroom kept clean | 3 of 5 stars |
| Restfulness of Environment | 2 of 5 stars |
| Care Coordination | 3 of 5 stars |
| Symptoms After Stay | 3 of 5 stars |
| Rated the hospital 9 or 10 out of 10 | 65%National average: 72% |
| Would definitely recommend the hospital | 64%National average: 71% |
| Nurses “always” communicated well | 80%National average: 80% |
| Doctors “always” communicated well | 77%National average: 80% |
| “Always” got help as soon as they wanted | 58%National average: 64% |
| Staff “always” explained medicines before giving them | 62%National average: 62% |
| Were given information about recovery at home | 90%National average: 86% |
| Room and bathroom “always” clean | 69%National average: 73% |
| Completed surveys | 347Response rate: 22% |
Source: Patient survey (HCAHPS) - Hospital — CMS, released October 19, 2026; patients discharged January 2025 to December 2025.
Infections caught in the hospital
What this means: CMS compares the number of infections patients caught in this hospital with the number expected for a hospital like it. The number shown is that ratio: below 1 means fewer infections than expected, above 1 means more. “Better” or “worse” is shown only when the difference is clear in the data.
| Catheter-associated urinary tract infections (CAUTI) | 0.655No different from the national benchmark |
|---|---|
| Clostridioides difficile (C. diff) intestinal infections | 0Better than the national benchmark |
| Not reported to Medicare | Central line bloodstream infections (CLABSI); Surgical site infections after colon surgery; Surgical site infections after abdominal hysterectomy; MRSA bloodstream infections |
Source: Healthcare Associated Infections - Hospital — CMS, released October 19, 2026; data from January 2025 to December 2025.
Complications and deaths
What this means: Death rates are the share of patients who died within 30 days of going into the hospital for that condition, adjusted for how sick they were. PSI-90 combines several serious complications (a lower number is better). “No different from the national rate” is the most common result and means the hospital is in line with hospitals nationwide.
| Deaths within 30 days: heart attack patients | 9% |
|---|---|
| Deaths within 30 days: heart failure patients | 11.7% |
| Deaths within 30 days: pneumonia patients | 15% |
| Deaths within 30 days: COPD patients | 7.9% |
| Deaths within 30 days: stroke patients | 12% |
| Serious complications (patient safety indicator PSI-90) | 0.85No different from the national rate |
| Too few cases to report | Deaths within 30 days: coronary bypass surgery (CABG); Complications after hip or knee replacement |
Source: Complications and Deaths - Hospital — CMS, released October 20, 2026; data from July 2022 to June 2025.
Return visits to the hospital (readmissions)
What this means: The share of patients who had to be admitted to a hospital again within 30 days after going home, adjusted for how sick they were. A lower percentage is better.
| Returned to any hospital within 30 days (all patients) | 16.2% |
|---|---|
| Readmitted within 30 days: heart attack | 13.6% |
| Readmitted within 30 days: heart failure | 19.6% |
| Readmitted within 30 days: pneumonia | 16.3% |
| Readmitted within 30 days: COPD | 19.3% |
| Too few cases to report | Readmitted within 30 days: coronary bypass surgery; Readmitted within 30 days: hip or knee replacement |
Source: Unplanned Hospital Visits - Hospital — CMS, released October 20, 2026; data from July 2024 to June 2025.
Emergency room times and sepsis care
What this means: ER time is the middle (median) time from arriving at the emergency room to leaving it; busier ERs usually have longer times, so the ER volume is shown too. Leaving before being seen: a lower percentage is better. Sepsis is a life-threatening reaction to an infection; a higher percentage means more patients got every recommended early step.
| Emergency room volume (patients per year) | Medium (20,000–39,999) |
|---|---|
| Average (median) time patients spent in the emergency room before leaving (OP-18b) | 176 minutesNational average: 162 minutes |
| Patients who left the emergency room before being seen (OP-22) | 2%National average: 2% |
| Sepsis patients who got all the recommended early care (SEP-1) | 83%National average: 66% |
Source: Timely and Effective Care - Hospital — CMS, released October 19, 2026; data from January 2024 to December 2024.
Medicare payment programs
Medicare (CMS) uses these federal programs to adjust what it pays hospitals, based on quality, safety and cost results. This is a payment to the hospital for Medicare patients, not a price you pay, and not a prediction for any one person. Results for Adventist Health Sonora, fiscal year 2026 (October 2025 to September 2026).
Show the Medicare payment program results
Hospital-Acquired Condition Reduction Program
What this means: Medicare gives each hospital a Total HAC Score built from patient-safety complications and from infections caught in the hospital. The quarter of hospitals with the highest (worst) scores gets a reduction in its Medicare payments. A lower score is better.
CMS says: Hospitals with a Total HAC Score above the 75th percentile of the Total HAC Score distribution will be subject to a 1-percent payment reduction.
| Medicare payment reduction, fiscal year 2026 | YesCMS applies a 1-percent payment reduction to this hospital. |
|---|---|
| Total HAC Score | 0.6825Lower is better. Hospitals above the 75th percentile of all scores get the reduction. |
Source: Hospital-Acquired Condition (HAC) Reduction Program — CMS, released January 26, 2026; patient-safety data from July 2022 to June 2024 and infection data from January 2023 to December 2024.
Hospital Readmissions Reduction Program
What this means: For six conditions, Medicare compares how often this hospital’s patients had to go back into a hospital within 30 days with how often that happens at an average hospital with similar patients. The ratio is that comparison: 1 means as many readmissions as expected, above 1 means more than expected (CMS calls these “excess readmissions”), below 1 means fewer.
CMS says: In October 2012, CMS began reducing Medicare payments for subsection(d) hospitals with excess readmissions under the Hospital Readmissions Reduction Program (HRRP).
| Heart attack | 0.9900Fewer readmissions than expected |
|---|---|
| Heart failure | 0.9690Fewer readmissions than expected |
| Pneumonia | 0.9697Fewer readmissions than expected |
| COPD (chronic lung disease) | 0.9544Fewer readmissions than expected |
| No result published | Hip or knee replacement; Coronary bypass surgery (CABG) (not reported, or too few cases) |
Source: Hospital Readmissions Reduction Program — CMS, released January 26, 2026; patients discharged July 2021 to June 2024.
Hospital Value-Based Purchasing Program
What this means: Medicare scores hospitals in four areas, each from 0 to 100, and combines them into a Total Performance Score from 0 to 100. A higher score means better results on these measures. Medicare uses the score to adjust what it pays the hospital.
CMS says: This program adjusts payments to hospitals under the Inpatient Prospective Payment System (IPPS) based on the quality of care they deliver.
| Total Performance Score | 39.62 out of 100Median of the 2,455 hospitals in the program: 29.50 |
|---|---|
| Clinical outcomes (deaths and complications) | 42.50 out of 100 |
| Person and community engagement (patient survey) | 21.00 out of 100 |
| Safety (infections and sepsis care) | 35.00 out of 100 |
| Efficiency and cost reduction (Medicare spending) | 60.00 out of 100 |
Source: Hospital Value-Based Purchasing (HVBP) - Total Performance Score — CMS, released January 26, 2026, fiscal year 2026. Program description: The Hospital Value-Based Purchasing (VBP) Program — CMS, page last modified September 10, 2024.
Medicare spending per patient (MSPB)
What this means: This compares what Medicare spent on a hospital stay, counting the 3 days before it and the 30 days after, with the national median hospital, after adjusting for the patient’s age and health and for local prices. A ratio of 1.00 is the national median hospital; below 1.00 means Medicare spent less, above 1.00 means more. It measures the cost to Medicare, not the quality of care.
CMS says: The Medicare Spending Per Beneficiary (MSPB) Measure shows whether Medicare spends more, less, or about the same for an episode of care (episode) at a specific hospital compared to all hospitals nationally.
| Medicare spending per patient, ratio | 0.91Below the national median hospital (1.00): Medicare spent less |
|---|
Source: Medicare Spending Per Beneficiary - Hospital — CMS, released October 19, 2026; data from January 2024 to December 2024.
ER wait times and Medicare ratings nearby
How this hospital compares with others in the area, ranked only by official Medicare (CMS) numbers.
Prices
We have not been able to read a price file for Adventist Health Sonora yet. Every US hospital must publish its standard charges online (federal price transparency rule): look for “price transparency” or “standard charges” on the hospital’s website, or call the hospital and ask for an estimate. In a medical emergency, call 911.
Hospital information
| Hospital type | Acute Care Hospital |
|---|---|
| Address | 1000 Greenley Road, Sonora, CA 95370 |
| County | Tuolumne County |
| State | California |
| Phone | (209) 536‑5000 |
| Emergency services | Yes |
| Ownership | Voluntary non-profit - Church |
| Medicare overall rating | 3 of 5 stars |
| Birthing-friendly designation | Yes (meets CMS criteria) |
| CMS Certification Number | 050335 |
| Name in Medicare records | ADVENTIST HEALTH SONORA |
| Profile level | Medicare data + hospital website |
| Official website | adventisthealth.org |
| Corrections | Report an error or suggest an update → |
Sources
- Hospital General Information — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-26, retrieved 2026-11-13
- Medicare Care Compare — official Medicare profile of this hospital
- U.S. Census Bureau Geocoder — map position used for distances
From the hospital’s website
Numbers match the citations above. Checked 2026-10-30.
- Adventist Health Sonora — adventisthealth.org
- Visitor Information — adventisthealth.org
- Accreditations and Awards — adventisthealth.org
- Emergency Care — adventisthealth.org
- Translation Services — adventisthealth.org
- Cancer Care - Sonora - Adventist Health — adventisthealth.org
- Heart Care - Sonora - Adventist Health — adventisthealth.org
- Imaging - Sonora - Adventist Health — adventisthealth.org
- Maternity | Adventist Health Sonora — adventisthealth.org
- Orthopedics - Sonora - Adventist Health — adventisthealth.org
- Surgery - Sonora - Adventist Health — adventisthealth.org