James Douglas Mitchell, MD
Radiation Oncology Physician · Walnut Creek, CA
James Douglas Mitchell, MD is a radiation oncology physician with a practice address in Walnut Creek, California, and NPI 1700057569, issued on Mar 19, 2008. Check the license (California A122777, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Douglas Mitchell
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A122777 CA
Self-reported in NPPES; status is on the state search - Practice location
- 575 Lennon LN, Walnut Creek, CA 94598
- Phone
- (925) 433-8786
- Enumerated
- Mar 19, 2008
- Record last updated
- Mar 3, 2025
- Fax
- (925) 433-8788
- Medicare enrollment
- Enrolled (PECOS I20170619002182); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 575 Lennon LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Soheila Azghadi, MDRadiation Oncology Physician1952794455
- Danielle Bertoni, MDSurgery Physician1780843185
- Kuang-Hwa Chao, M.D.Radiation Oncology Physician1073721569
- Julianne ChavesPhysician Assistant1891463667
- Nicole Daisa, ARNPFamily Nurse Practitioner1861924516
- Jewel Johl, M.D.Hematology & Oncology Physician1407852858
Verify James Douglas Mitchell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122777Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,005.05
37 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Bass Medical GroupAlamo, CA
- Northern California Radiation Therapists And Oncologists Medical GroupBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Douglas Mitchell among 735 radiation oncology physician records in California
James Douglas Mitchell, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 38% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2003 · median 2005 among the 545 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Walnut Creek → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Soheila Azghadi, MDWalnut Creek, CA 945981952794455
- Kuang-Hwa Chao, M.D.Walnut Creek, CA 945981073721569
- Michael Zhang, M.D., PH.D.Vallejo, CA 945891861856718
- Gopal Sachdeva, MDEmeryville, CA 946081447449509
- Michael Faer, M.D.Oakland, CA 946091932192242
- Charles Fiske, M.D.Oakland, CA 946091013900331
- John Salzman, MDOakland, CA 946091457349342
- Jason Kelly, MDOakland, CA 946111063590859
Common questions
What is James Douglas Mitchell, MD's NPI number?
James Douglas Mitchell, MD's National Provider Identifier (NPI) is 1700057569, issued on Mar 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is James Douglas Mitchell, MD located?
The NPPES record lists a practice address at 575 Lennon LN, Walnut Creek, CA, 94598. Phone: (925) 433-8786. Providers update this record themselves, so call before visiting.
How can I verify James Douglas Mitchell, MD's license?
NPPES lists California license number A122777, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.