CMS did not publish an overall star rating for this hospital; hospitals that report too few quality measures are not rated.
Source: CMS Care Compare, October 2026 releaseER figures are medians, not live waitsAbout the data
Visiting John C Fremont Healthcare District
Mariposa, CA 95338
County: Mariposa Directions Apple Maps Call (209) 966-3631
- Photo ID and your insurance, Medicare or Medicaid card
- A list of your medicines, doses and allergies
- Your doctor's name and phone number
- A phone charger
Official links: Website for John C Fremont Healthcare District (opens the hospital's site)
Nearby hospitals
- 29mi Mercy Medical Center Merced, CA · Emergency room · median ER visit 3 hr 50 min Call Mercy Medical Center Directions to Mercy Medical Center (Google Maps) Details for Mercy Medical Center
- 31mi Mercy Medical Center Merced Merced, CA · Emergency room · median ER visit 3 hr 50 min Call Mercy Medical Center Merced Directions to Mercy Medical Center Merced (Google Maps) Details for Mercy Medical Center Merced
- 39mi Madera Community Hospital Madera, CA · Emergency room Call Madera Community Hospital Directions to Madera Community Hospital (Google Maps) Details for Madera Community Hospital
Quick answers about John C Fremont Healthcare District
What is the phone number for John C Fremont Healthcare District?
The main phone number for John C Fremont Healthcare District is (209) 966-3631, from Medicare's hospital records.
Call (209) 966-3631What is the address of John C Fremont Healthcare District?
John C Fremont Healthcare District is at 5189 Hospital Rd, Mariposa, CA 95338.
Directions (opens Google Maps)Does John C Fremont Healthcare District have an emergency room?
Yes. John C Fremont Healthcare District has an emergency department, according to Medicare data.
Quality and performance
Centers for Medicare & Medicaid Services · data as of October 2026
CMS has not reported an emergency department wait time for John C Fremont Healthcare District. That usually means too few cases to report, or no emergency department.
Source: CMS Hospital General Information and Timely & Effective Care. Wait times are a median over a past 12-month reporting period, not live data. Not affiliated with CMS or with John C Fremont Healthcare District. For a medical emergency, call 911.
Other Critical Access hospitals in California · How we source this data · Something wrong on this page? Tell us
What patients say
CMS patient survey (HCAHPS) · 32 completed surveys · patients discharged Jan 2025 – Dec 2025
63% would definitely recommend it (U.S. average 71%). 63% rated it 9 or 10 out of 10.
The patient survey (HCAHPS) asks a random sample of adult patients about their recent hospital stay. CMS adjusts the results for the mix of patients and how the survey was done, so hospitals can be compared fairly. CMS gives a star rating only to hospitals with at least 100 completed surveys, so this hospital has answer percentages but no stars. These results come from fewer than 100 completed surveys, so CMS advises using them with caution. About the data.
Infections, complications and deaths
Centers for Medicare & Medicaid Services · compared with hospitals nationwide
Death rates within 30 days
| Patients treated for | This hospital | U.S. |
|---|---|---|
| Heart failure patients | 12.3% | 11.1% |
| Pneumonia patients | 14.3% | 15.2% |
| COPD patients | 9.0% | 8.6% |
| Hospital-wide, all conditions | 4.1% | 3.9% |
Risk-adjusted rates. CMS has not published a statistical better/worse comparison for these death rates in the current release, so small differences from the U.S. rate may be chance.
"Better" or "worse" means CMS found the difference from the national benchmark statistically significant; most hospitals are "no different". Infection results compare the infections a hospital reported with the number predicted for a hospital of its size and type (a ratio below 1 means fewer than predicted). Death and complication rates are risk-adjusted for how sick patients were. Each death rate counts deaths within 30 days of a hospital stay, pooled over one to three years of Medicare patients depending on the measure. About the data.
Health insurance at John C Fremont Healthcare District
Original Medicare: Medicare-certified, so it can bill Original Medicare (Medicare number 051304). Medicare Advantage plans have their own networks, which this section does not cover.
California runs its own exchange, Covered California. Check its provider directory for John C Fremont Healthcare District.
Source: the insurers' 2027 machine-readable provider files listed in the CMS Marketplace public use files, loaded November 4, 2026, matched to hospitals by NPI from CMS Hospital Enrollments. How we match networks to hospitals Networks change; confirm with your insurer before you go.
Readmissions and return visits
Centers for Medicare & Medicaid Services · Medicare patients · Jul 2024 – Jun 2025
Back in the hospital within 30 days
| After a stay for | This hospital | U.S. | CMS comparison |
|---|---|---|---|
| All conditions (hospital-wide)Medicare patients back in any hospital within 30 days of leaving. | 15.8% | 16.2% | Not compared |
| Pneumonia | 17.5% | 17.3% | Not compared |
| COPD (chronic lung disease) | 19.2% | 20% | Not compared |
Return trips after a stay or procedure
Readmission rates count Medicare patients who were admitted to any acute-care hospital within 30 days of leaving this one, adjusted for how sick they were. "Better" or "worse" means CMS found the difference from the national rate statistically significant; most hospitals are "no different". Return-day and outpatient-surgery measures compare the hospital with what CMS expected for its own patients. The Readmissions Reduction Program ratios are shown as CMS publishes them; whether a hospital's payments are reduced depends on how its ratios compare with similar hospitals, so a ratio above 1.00 alone doesn't mean a penalty. About the data.
Timely and effective care
Centers for Medicare & Medicaid Services · all patients unless noted · Jan 2024 – Dec 2024
John C Fremont Healthcare District's emergency department is classed by CMS as low volume.
| Measure | This hospital | U.S.* |
|---|---|---|
| Patients who left the ER before being seenLower is better. 7,415 patients. | 1% | 2% |
| Health care workers vaccinated against fluHigher is better. 239 patients. | 78% | 77% |
| Discharged on two opioids, or an opioid and a benzodiazepinePatients sent home with prescriptions that raise the risk of overdose when combined. Lower is better. 134 patients. | 19% | 16% |
| Blood clot prevention givenHigher is better. 420 patients. | 62% | 91%* |
CMS publishes these process-of-care measures without a better/worse verdict, so the U.S. figure is shown for context; small differences, or results based on few patients, may not mean much. *Median of all hospitals CMS reports, where CMS publishes no national figure. About the data.
Care after a stay at John C Fremont Healthcare District
Medicare-certified providers near this hospital, with their CMS ratings. A hospital discharge planner can make the referral.
Skilled nursing facilities nearby
- 0.2mi John C. Fremont Healthcare District Dp/Snf Mariposa, CA · 16 beds Medicare overall 2 of 5 stars · Located in a hospital
- 21mi Majestic Mountain Care Center Oakhurst, CA · 66 beds Medicare overall 1 of 5 stars · Short-stay quality 2 of 5 Abuse citation (CMS) SFF candidate
Skilled nursing ratings and inspections at Nursing Homes In Each State
Source: CMS Care Compare. Distances are approximate.
Doctors at John C Fremont Healthcare District
43 Medicare-enrolled doctors and other clinicians list this hospital as an affiliation, across 13 specialties.
Find doctors in Mariposa
Medicare-enrolled specialists with a practice in Mariposa, with addresses, phone numbers and the hospitals they work with.
Federal rules require hospitals to publish their prices, including the rates they've negotiated with each insurer and their cash prices. John C Fremont Healthcare District lists them here:
From the hospital's price transparency file (www.jcf-hospital.com/cms-hpt.txt), checked Nov 7, 2026. For an estimate of what you'll pay, ask the hospital or your insurer; Medicare's averages are on our procedure cost pages.
Size and finances
Medicare cost report · fiscal year ending Jun 2025
As reported by the hospital to CMS; not audited. Operating margin is income from patient care divided by net patient revenue and leaves out investment income and donations. Compare California hospital finances.
Who owns John C Fremont Healthcare District
Medicare enrollment and ownership records (PECOS)
Medicare lists the hospital's legal name as John C Fremont Healthcare District, a non-profit organization, incorporated 1947.
73 doctors and other clinicians list John C Fremont Healthcare District as a hospital affiliation in Medicare's clinician directory.
Organizations with 5% or more ownership (directly or through other companies), partnership interests or operational control, as the hospital reported them to Medicare. Records can lag behind recent sales. Individuals are not listed. Who owns America's hospitals.
The area around John C Fremont Healthcare District
HRSA shortage designations and BLS pay data
Primary care: Parts of Mariposa are federally designated health professional shortage areas (1 designation). Highest shortage score 14.
Mental health: Mariposa is a federally designated health professional shortage area. Highest shortage score 16.
Nurse pay: registered nurses in California earn a median $140,270 a year. Healthcare salaries in California.
Shortage areas are designated by the Health Resources and Services Administration where there are too few primary care, mental health or dental providers for the population; scores run from 0 to 25 for primary and mental health care and 0 to 26 for dental care, higher meaning greater need. California shortage areas
Closest other hospitals
Healthcare pay in California
Registered nurses across California (all employers) earned a median of $140,270 a year (BLS, May 2025).Registered Nurse (RN) salary in CaliforniaNurse Practitioner salary in CaliforniaRespiratory Therapist salary in CaliforniaHealthcare salaries in California