John A. Hayward, MD
Hematology & Oncology Physician · Chico, CA
John A. Hayward, MD is a hematology & oncology physician with a practice address in Chico, California, and NPI 1376539411, issued on Sep 23, 2005. Check the license (California G061995, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John A. Hayward
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G061995 CA
Self-reported in NPPES; status is on the state search - Practice location
- 265 Cohasset RD, Chico, CA 95926
- Phone
- (530) 899-9000
- Enumerated
- Sep 23, 2005
- Record last updated
- May 19, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (530) 895-8928
- Medicaid ID
- 00G619951 CA
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 265 Cohasset RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Bonis, MDHematology & Oncology Physician1689779209
- Kalyn Burnell, RDRegistered Dietitian1083318125
- Rubens Costa Filho, MDHematology & Oncology Physician1023342466
- Anne Dawson, M.D.Radiation Oncology Physician1902847981
- Dana DominguezSurgical Oncology Physician1083091425
- Debra Garley, MDHematology & Oncology Physician1447322292
Verify John A. Hayward in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G061995Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,487 Medicare Part D claims for 37 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 23 claims were for opioids.
Most prescribed
- Losartan Potassium89 claims
- Gabapentin80 claims
- Sertraline Hcl73 claims
- Baclofen68 claims
- Tamsulosin Hcl57 claims
- Eliquis50 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 practice group's MIPS final score for 2023 (Medicare payment program): 90.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
John A. Hayward among 1,583 hematology & oncology physician records in California
John A. Hayward, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% 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 Chico → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- William Bonis, MDChico, CA 959261689779209
- Rubens Costa Filho, MDChico, CA 959261023342466
- Debra Garley, MDChico, CA 959261447322292
- Sam Mazj, MDChico, CA 959261043287378
- Sufana Shikdar, MD, MPHChico, CA 959261255780938
- Nicole Whitlatch, MDChico, CA 959261114190972
- Yuan Ying, M.D,Chico, CA 959261447612080
- David Campbell, M.D.Grass Valley, CA 959451750373239
Common questions
What is John A. Hayward, MD's NPI number?
John A. Hayward, MD's National Provider Identifier (NPI) is 1376539411, issued on Sep 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John A. Hayward, MD located?
The NPPES record lists a practice address at 265 Cohasset RD, Chico, CA, 95926. Phone: (530) 899-9000. Providers update this record themselves, so call before visiting.
How can I verify John A. Hayward, MD's license?
NPPES lists California license number G061995, 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 John A. Hayward, MD prescribe under Medicare Part D?
In 2024, John A. Hayward, MD had 1,487 Medicare Part D claims for 37 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is John A. Hayward, MD's MIPS final score?
The 2023 MIPS final score is 90.3 of 100, reported for the practice group. 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.