Jose Leonel Ochoa-Bayona, M.D.
Hematology & Oncology Physician · Walnut Creek, CA
Jose Leonel Ochoa-Bayona, M.D. is a hematology & oncology physician with a practice address in Walnut Creek, California, and NPI 1669475158, issued on May 27, 2005. Check the license (California C171204, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jose Leonel Ochoa-Bayona
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- C171204 CA
Self-reported in NPPES; status is on the state search - Practice location
- 177 LA Casa Via Ste 390, Walnut Creek, CA 94598
- Phone
- (925) 677-5041
- Enumerated
- May 27, 2005
- Record last updated
- Jun 10, 2025
- Medicaid IDs
- 279372500 FL
164629102 TX - Medicare enrollment
- Enrolled (PECOS I20250528000916); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 177 LA Casa Via Ste 390
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hangama Abassi, N.P.Nurse Practitioner1487083655
- Sarah Buenviaje, M.S.N., O.N.P.Nurse Practitioner1588716971
- Shannon ChakedisNurse Practitioner1134527690
- Aditi Choudhry, M.D.Hematology & Oncology Physician1427218908
- Mary Angelyn Clark, MSN, APRNNurse Practitioner1053887455
- Cameron Fisher, PAPhysician Assistant1073187936
Verify Jose Leonel Ochoa-Bayona in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C171204Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average hematology & oncology physician in 2024
982 Medicare Part D claims for 90 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 97 claims were for opioids.
Most prescribed
- Acyclovir110 claims
- Sulfamethoxazole-Trimethoprim52 claims
- Sirolimus41 claims
- Morphine Sulfate Er39 claims
- Jakafi37 claims
- Oxycodone Hcl32 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): 89.4 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).
Bills Medicare through one group practice
- John Muir Physician NetworkPleasant Hill, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jose Leonel Ochoa-Bayona among 1,583 hematology & oncology physician records in California
Jose Leonel Ochoa-Bayona, 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 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 fileYes · 71% of these records are
- Graduated1989 · median 2003 among the 1,124 with a school on file
- Record last updated2025 · 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 Walnut Creek → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Aditi Choudhry, M.D.Walnut Creek, CA 945981427218908
- Aruna Gavini, MDWalnut Creek, CA 945981942439021
- Ammara Gill, MDWalnut Creek, CA 945981447482096
- Jewel Johl, M.D.Walnut Creek, CA 945981407852858
- Jonathan PaiWalnut Creek, CA 945981285196105
- Ronak Patel, M.D.Walnut Creek, CA 945981255872602
- Gauri Sharma, D.O.Walnut Creek, CA 945981528234002
- Michael Sherman, M.D., PHDWalnut Creek, CA 945981164643359
Common questions
What is Jose Leonel Ochoa-Bayona, M.D.'s NPI number?
Jose Leonel Ochoa-Bayona, M.D.'s National Provider Identifier (NPI) is 1669475158, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jose Leonel Ochoa-Bayona, M.D. located?
The NPPES record lists a practice address at 177 LA Casa Via Ste 390, Walnut Creek, CA, 94598. Phone: (925) 677-5041. Providers update this record themselves, so call before visiting.
How can I verify Jose Leonel Ochoa-Bayona, M.D.'s license?
NPPES lists California license number C171204, 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 Jose Leonel Ochoa-Bayona, M.D. prescribe under Medicare Part D?
In 2024, Jose Leonel Ochoa-Bayona, M.D. had 982 Medicare Part D claims for 90 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Jose Leonel Ochoa-Bayona, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.4 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.