William Earle Bonis, MD
Individual provider Active NPI Hematology & Oncology Physician · Chico, CA
NPI 1689779209 · NPPES record last updated Apr 29, 2026
Key facts
- NPI
- 1689779209
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Hematology & Oncology Physician 207RH0003X
- License
- A53478 (CA)
- Practice address
- 265 Cohasset Rd
Chico, CA 95926-2273 - Phone
- (530) 332-3890
- Fax
- (530) 893-6907
- NPI assigned
- Sep 14, 2006
- Sex
- Male
- Sole proprietor
- Yes
Organizations & group practices 17
Hospital & facility affiliations 7
Medicare Care Compare profile
- Specialty
- Hematology/Oncology
- Education
- Other, 1990
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
- Marshall Medical Center
Practice addresses (Care Compare)
3581 Palmer Dr
Suite 400
Cameron Park, CA 95682-8237
Phone (530) 676-6600
Hospital & facility affiliations
- Marshall Medical Center
- Enloe Health
- Jefferson Healthcare
- Swedish Medical Center
- Peacehealth United General Medical Center
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled (2 enrollments) in CA, WA
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20060510000546 | CA | Practitioner - Hematology/Oncology |
4587675178 | Reassigns benefits to 3 organizations |
| I20240327000901 | WA | Practitioner - Hematology/Oncology | 4587675178 | Reassigns benefits to 2 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 53478 | CA | MD | Marriage & Family Therapist |
| A53478 | CA | MD | Hematology & Oncology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Dignity Health | Current |
Accepting new patients | |
| Marshall Medical Center | Current |
Accepting new patients | |
| Intermountain Medical Group Denver, LLC | Current |
Accepting new patients | |
| Intermountain Medical Group Denver, LLC | Hematology & Oncology | Current | Accepting new patients |
| Marshall Medical Center | Current |
Accepting new patients | |
| Intermountain Medical Group Denver, LLC | Current |
Accepting new patients | |
| Enloe Specialty Physicians, Inc | Current |
Accepting new patients | |
| Dignity Health | Current |
Accepting new patients | |
| Dignity Health | Current | Accepting new patients | |
| Chico Hematology Oncology | Hematology & Oncology | Past | Accepting new patients |
Locations
3501 Palmer Dr
Ste 201
Cameron Park, CA 95682
Phone (530) 626-2611
3581 Palmer Dr
Ste 400
Cameron Park, CA 95682
Phone (530) 676-6600
265 Cohasset Rd
Chico, CA 95926
Phone (530) 332-3808
265 Cohasset Rd
Ste 150
Chico, CA 95926
Phone (530) 332-4700
1004 Fowler Way
Ste 4
Placerville, CA 95667
Phone (530) 626-9488
2175 Rosaline Ave
Redding, CA 96001
Phone (530) 225-7247
310 Hartnell Ave
Ste Ac
Redding, CA 96002
Phone (530) 225-6390
500 Eldorado Blvd
Ste 4300
Broomfield, CO 80021
Interoperability endpoints
- wbonis15173@enloedirect.org
- wbonis3451753@wm.providencedirect.org
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Hematology & Oncology Physician | 207RH0003X | MD61518247 | WA | |
| Hematology & Oncology Physician | 207RH0003X | A53478 | CA | Yes |
Addresses
Primary practice location
265 Cohasset Rd
Chico, CA 95926-2273
Mailing address
PO Box 7555
Chico, CA 95927-7555
Phone (530) 332-3890
Other practice location 1
2000 Hospital Dr
Sedro Woolley, WA 98284-4327
Phone (360) 856-7588
Other practice location 2
834 Sheridan St
Port Townsend, WA 98368-2443
Phone (360) 344-3091
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1689779209 | Medicaid | CA |
Other providers in Chico, CA
- Clifford L Bolin
- Dylan Cole Bond
- Ez Anthony Bond
- Joseph D Bond
- Melissa Janelle Bonham
- Kendra Bonner
- Bookadoc2U LLC
- Bookadoc2U LLC
- Christopher Boone
- David Lee Boos
All providers in Chico, CA · Hematology & Oncology Physician in California
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Apr 29, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.