Dr William Earle Bonis, MD - Medicare Hematology/oncology in Chico, CA

Dr William Earle Bonis, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Chico, California. He graduated from medical school in 1990 and has 34 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Dignity Health and his current practice location is 265 Cohasset Rd, Chico, California. You can reach out to his office (for appointments etc.) via phone at (530) 332-3890.

Dr William Earle Bonis is licensed to practice in California (license number A53478) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1689779209.

Contact Information

Dr William Earle Bonis, MD
265 Cohasset Rd,
Chico, CA 95926-2273
(530) 332-3890
(530) 893-6907

Map and Direction




Physician's Profile

Full NameDr William Earle Bonis
GenderMale
SpecialityHematology/oncology
Experience34 Years
Location265 Cohasset Rd, Chico, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr William Earle Bonis graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1689779209
  • Provider Enumeration Date: 09/14/2006
  • Last Update Date: 03/13/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4587675178
  • Enrollment ID: I20060510000546

Medical Identifiers

Medical identifiers for Dr William Earle Bonis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1689779209NPI-NPPES
1689779209MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology A53478 (California)Primary
207RH0003XInternal Medicine - Hematology & Oncology MD61518247 (Washington)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Medical Center ReddingRedding, CAHospital
Enloe Medical CenterChico, CAHospital
Good Samaritan Medical Center LlcLafayette, COHospital
Mercy Medical Center Of Mt ShastaMount shasta, CAHospital
St Elizabeth Community HospitalRed bluff, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Dignity Health206232055958

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr William Earle Bonis allows following entities to bill medicare on his behalf.
Entity NameDignity Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336588870
PECOS PAC ID: 2062320559
Enrollment ID: O20081223000427
Entity NameEnloe Specialty Physicians, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306105721
PECOS PAC ID: 7416111893
Enrollment ID: O20120614000789

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr William Earle Bonis is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr William Earle Bonis, MD
Po Box 7555,
Chico, CA 95927-7555

Ph: (530) 332-3890
Dr William Earle Bonis, MD
265 Cohasset Rd,
Chico, CA 95926-2273

Ph: (530) 332-3890

Reviews and Comments


Internal Medicine Doctors in Chico, CA

Eric A Ford, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 10 Governors Ln, Chico, CA 95926
Phone: 530-894-8800    Fax: 530-894-8929
Dr. Arthur J Brinckerhoff, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 277 Cohasset Rd, Chico, CA 95926
Phone: 530-872-6650    
Brian Thomas Courtney, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1531 Esplanade, Chico, CA 95926
Phone: 530-896-7455    Fax: 530-896-1730
Rubens Barros Costa Filho, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 265 Cohasset Rd, Chico, CA 95926
Phone: 530-332-4700    
Dr. Leena Singh, MD, PHD
Hematology & Oncology
Medicare: May Accept Medicare Assignments
Practice Location: 1488 East Ave, Suite 130, Chico, CA 95926
Phone: 530-342-1310    
Alyssa Milliron, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 680 Cohasset Rd, Chico, CA 95926
Phone: 530-342-4395    Fax: 530-894-2325
Dr. Sam Mazj, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 265 Cohasset Rd, Suite 170, Chico, CA 95926
Phone: 530-893-2323    Fax: 530-894-0935

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.