Healthcare Providers & Facilities in Oroville, CA
Public healthcare directory of 922 individual practitioners and 201 healthcare facilities located in Oroville, California.
Medical Specialties in Oroville
Select a specialty to view practitioner listings, practice locations, and qualifications.
Nurse Practitioner - Family
Pharmacist
Social Worker - Clinical
Internal Medicine
Family Medicine
Chiropractor
Dentist - General Practice
All Specialties in Oroville
Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 106 more with at least one listed practitioner. Number of practitioners in brackets.
Allopathic & Osteopathic Physicians
- Emergency Medicine (8)
- General Practice (8)
- Hospitalist (3)
- Internal Medicine - Cardiovascular Disease (2)
- Internal Medicine - Gastroenterology (2)
- Internal Medicine - Hematology & Oncology (4)
- Internal Medicine - Nephrology (2)
- Obstetrics & Gynecology (6)
- Ophthalmology (6)
- Pathology - Anatomic Pathology & Clinical Pathology (4)
- Pediatrics (4)
- Preventive Medicine - Public Health & General Preventive Medicine (8)
- Psychiatry & Neurology - Psychiatry (7)
- Surgery (10)
Behavioral Health & Social Service Providers
Dental Providers
- Dental Hygienist (3)
Dietary & Nutritional Service Providers
Eye and Vision Services Providers
- Optometrist (4)
Nursing Service Providers
Nursing Service Related Providers
Other Service Providers
- Acupuncturist (4)
- Case Manager/Care Coordinator (93)
- Community Health Worker (4)
- Driver (2)
- Health & Wellness Coach (4)
- Peer Specialist (4)
- Specialist (7)
Physician Assistants & Advanced Practice Nursing Providers
Podiatric Medicine & Surgery Service Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Speech, Language and Hearing Service Providers
Student, Health Care
Featured Healthcare Providers in Oroville
Practitioner profiles in Oroville, CA with recent CMS Medicare or Open Payments data.
Dr. Thomas Guerrero , MD, PhD
Radiology - Radiation Oncology
Arash Nikookar
Nurse Anesthetist, Certified Registered
Nicole Gainey , PA-C
Physician Assistant
Lisa Beletsis
Nurse Practitioner - Family
Chima Egwim , MSN, APRN, PMHNP-BC
Nurse Practitioner - Psychiatric/Mental Health
Julian Aggio
Physician Assistant
Largest Cities in California
Other California cities with a full directory, by the number of active practitioners listed in NPPES.
How Oroville compares with the U.S.
Compared with the U.S. as a whole, Oroville has more clinicians in Nurse Anesthetist, Certified Registered (4.0x), Dentists (3.8x) and Physician Assistants (3.7x) per 100,000 residents.
Oroville has 4,668 active clinicians per 100,000 residents, compared with 2,198 for the U.S.
What these numbers mean
Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.
A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.
City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.
85% of clinicians in Oroville listed in the CMS Medicare file (137 of 162) accept Medicare assignment. That is lower than the California share of 91%.
Only 162 of 922 active clinicians in Oroville 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.
20% of clinicians in Oroville listed in the CMS Medicare file (32 of 162) 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 ยท 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. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).
Oroville CMS Healthcare & Financial Disclosures
CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Oroville, CA
Healthcare operations in Oroville, CA encompass 922 active individual practitioners and 201 registered medical facilities across 116 clinical specialties.
According to CMS Medicare Part D analytics for 2024, prescription drug volume in Oroville accounts for $39.3 Million across 263,668 prescription claims. 270 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.1 Million in payments reported by companies to 126 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.