By The Bay Health
Sonoma, CA · Medicare-certified home health agency (CCN 557041)
Patient survey (HHCAHPS): 5★
Serves: 18 ZIP codes (is yours included? →) · Phone: (707) 935-5135 · Verify on Medicare Care Compare ↗
By The Bay Health holds a 2.5-star CMS quality rating, below the California state average of 3 stars, but has a 5-star patient survey rating. This mixed picture suggests strong patient-reported experience alongside a below-average overall quality score according to CMS Care Compare data.
By The Bay Health offers Nursing Care, Physical Therapy, Occupational Therapy, Speech Pathology, Medical Social Services, and Home Health Aide services. It serves 18 ZIP codes from its office in Sonoma, California.
Yes, By The Bay Health is Medicare-certified, with CCN 557041, certified since February 27, 1989, so eligible home health services are covered under Medicare when ordered by a doctor. This certification status can be verified on the Medicare Care Compare website.
About this agency
By The Bay Health is a Medicare-certified home health agency based in Sonoma, California, certified since February 27, 1989. The agency is government-owned and offers a full range of home health services, including Nursing Care, Physical Therapy, Occupational Therapy, Speech Pathology, Medical Social Services, and Home Health Aide support.
According to CMS Care Compare data, By The Bay Health holds a CMS quality star rating of 2.5, which is below the California state average of 3 stars. However, the agency's patient survey star rating is 5, the highest possible score, reflecting patient experience feedback collected through the CMS survey process.
CMS data also reports that 97.57% of patients received timely initiation of care, and 81.22% of patients showed improvement in walking or moving around during their episode of care. These figures come from the CMS Care Compare dataset and represent agency-level outcome measures at the time of reporting.
By The Bay Health serves a service area covering 18 ZIP codes from its Sonoma, California office. Families researching this agency should review the most current CMS Care Compare listing directly, as star ratings and outcome measures are updated periodically and may change over time.
Questions families ask
Does Medicare pay for care from this agency?
Yes, By The Bay Health is Medicare-certified (CCN 557041) and has been since February 27, 1989, so eligible home health services are covered under Medicare when ordered by a doctor.
What services does this agency offer?
By The Bay Health offers Nursing Care, Physical Therapy, Occupational Therapy, Speech Pathology, Medical Social Services, and Home Health Aide services.
What is this agency's CMS quality star rating and how does it compare to the state average?
The agency has a CMS quality star rating of 2.5, which is below the California state average of 3 stars, according to CMS Care Compare data.
What do patients say about this agency in the CMS patient survey?
The agency's patient survey star rating is 5 out of 5, based on CMS Care Compare survey data.
How do I check this agency's quality and staffing record?
You can review By The Bay Health's official quality and staffing data on the Medicare Care Compare website at https://www.medicare.gov/care-compare/details/home-health/557041?state=CA.
What areas and ZIP codes does this agency serve?
By The Bay Health serves 18 ZIP codes from its office in Sonoma, California.
Tip: use our Search by ZIP Code feature to check instantly whether your ZIP is among the 18 this agency reports serving.
What questions should I ask before hiring this agency?
Ask about current staffing availability, specific service scheduling, and any details not listed on CMS Care Compare by contacting the agency directly at (707) 935-5135.
How long has this agency been Medicare-certified?
By The Bay Health has been Medicare-certified since February 27, 1989.
Who owns this agency — for-profit, non-profit, or government?
By The Bay Health is government-owned, according to CMS data.
How much does home health care cost and who pays?
CMS does not publish cost data for this agency; contact By The Bay Health at (707) 935-5135 for cost details and verify coverage information on Medicare Care Compare.
How do I contact this agency to start care?
You can contact By The Bay Health at (707) 935-5135 to inquire about starting care.
What percentage of patients received timely initiation of care?
CMS data shows 97.57% of By The Bay Health's patients received timely initiation of care.
What percentage of patients improved in walking or moving around?
According to CMS data, 81.22% of By The Bay Health's patients showed improvement in walking or moving around during their care episode.
Data: CMS Care Compare (Jul2026 refresh); certified since 02/27/1989. Ratings are CMS's official measures, not Care Considered's opinion. Always verify current status with the agency and Medicare before arranging care.