James Y. Chang, M.D.
Hematology & Oncology Physician · Bakersfield, CA
James Y. Chang, M.D. is a hematology & oncology physician with a practice address in Bakersfield, California, and NPI 1154422004, issued on Sep 25, 2006. Check the license (California A40873, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Y. Chang
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A40873 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7879 Rosedale Hwy, Bakersfield, CA 93308
- Phone
- (661) 316-8888
- Enumerated
- Sep 25, 2006
- Record last updated
- Jan 28, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (661) 282-8188
- Medicaid ID
- 00A408730 CA
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify James Y. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A40873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
313 Medicare Part D claims for 61 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Revlimid41 claims
- Anastrozole33 claims
- Acyclovir25 claims
- Hydroxyurea21 claims
- Prednisone16 claims
- Eliquis12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $76.02
3 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,560 providers of this specialty with any payment received $7,481.41 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.
James Y. Chang among 1,583 hematology & oncology physician records in California
James Y. Chang, M.D. is one of 1,583 hematology & 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Bakersfield → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Vinh-Linh Nguyen, MDBakersfield, CA 933061285603639
- Ricardo SalasBakersfield, CA 933061497045355
- Vikas Ghai, M.D.Bakersfield, CA 933011831359108
- Madiha Naseem, MDBakersfield, CA 933011245734912
- Abhay Risbud, MDBakersfield, CA 933011598824245
- Kyaw Tun, MDBakersfield, CA 933011427117084
- David Bryson, M.D.Visalia, CA 932911346248077
- Amitoj Gill, MDVisalia, CA 932771699022525
Common questions
What is James Y. Chang, M.D.'s NPI number?
James Y. Chang, M.D.'s National Provider Identifier (NPI) is 1154422004, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Y. Chang, M.D. located?
The NPPES record lists a practice address at 7879 Rosedale Hwy, Bakersfield, CA, 93308. Phone: (661) 316-8888. Providers update this record themselves, so call before visiting.
How can I verify James Y. Chang, M.D.'s license?
NPPES lists California license number A40873, 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.
How much does James Y. Chang, M.D. prescribe under Medicare Part D?
In 2024, James Y. Chang, M.D. had 313 Medicare Part D claims for 61 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is James Y. Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.