Healthcare Providers & Facilities in Mather, CA
Public healthcare directory of 399 individual practitioners and 18 healthcare facilities located in Mather, California.
Medical Specialties in Mather
Select a specialty to view practitioner listings, practice locations, and qualifications.
All Specialties in Mather
95 specialties with at least one listed practitioner; none has a comparison directory yet. Number of practitioners in brackets.
Allopathic & Osteopathic Physicians
- Anesthesiology (4)
- Emergency Medicine (5)
- Family Medicine (9)
- Internal Medicine (26)
- Internal Medicine - Cardiovascular Disease (3)
- Internal Medicine - Gastroenterology (3)
- Internal Medicine - Geriatric Medicine (2)
- Internal Medicine - Hematology & Oncology (2)
- Internal Medicine - Infectious Disease (4)
- Internal Medicine - Nephrology (2)
- Internal Medicine - Rheumatology (3)
- Ophthalmology (6)
- Orthopaedic Surgery - Orthopaedic Surgery of the Spine (2)
- Physical Medicine & Rehabilitation (3)
- Physical Medicine & Rehabilitation - Pain Medicine (2)
- Psychiatry & Neurology - Neurology (2)
- Psychiatry & Neurology - Psychiatry (9)
- Radiology - Diagnostic Radiology (2)
- Surgery (5)
- Urology (2)
Behavioral Health & Social Service Providers
Chiropractic Providers
- Chiropractor (2)
Dietary & Nutritional Service Providers
Eye and Vision Services Providers
- Optometrist (4)
Nursing Service Providers
Nursing Service Related Providers
- Adult Companion (4)
Other Service Providers
- Health & Wellness Coach (4)
- Peer Specialist (2)
- Specialist (5)
Pharmacy Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Podiatric Medicine & Surgery Service Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Speech, Language and Hearing Service Providers
Featured Healthcare Providers in Mather
Practitioner profiles in Mather, CA with recent CMS Medicare or Open Payments data.
Dr. Samuel Mcalpine , MD
Internal Medicine - Rheumatology
Dr. Keith Yamanishi , OD
Optometrist
Dr. Aravind Dasari , MD
Emergency Medicine
Dr. Ashlee Arnold , DO
Family Medicine
Rachel Moebus
Family Medicine
Dr. Marat Kazak , DPM
Podiatrist - Foot & Ankle Surgery
Largest Cities in California
Other California cities with a full directory, by the number of active practitioners listed in NPPES.
How Mather compares with the U.S.
399 active clinicians list a practice address in Mather, CA in the NPI registry.
Mather has fewer than 10,000 residents, so rates per 100,000 people change a lot with each clinician and are not compared here.
96% of clinicians in Mather listed in the CMS Medicare file (26 of 27) accept Medicare assignment. That is higher than the California share of 91%.
Only 27 of 399 active clinicians in Mather appear in the CMS Medicare file, so this share describes that smaller group.
What is Medicare assignment?
A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.
Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.
19% of clinicians in Mather listed in the CMS Medicare file (5 of 27) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the California share of 28%.
About the telehealth indicator
The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File.
Mather CMS Healthcare & Financial Disclosures
CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Mather, CA
Healthcare operations in Mather, CA encompass 399 active individual practitioners and 18 registered medical facilities across 95 clinical specialties.
According to CMS Medicare Part D analytics for 2024, prescription drug volume in Mather accounts for $1.7 Million across 21,159 prescription claims. 62 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies to 39 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.