Yousef Khelfa, M.D
Hematology & Oncology Physician · Sonora, CA
Yousef Khelfa, M.D is a hematology & oncology physician with a practice address in Sonora, California, and NPI 1396954392, issued on May 22, 2007. Check the license (California C138847, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yousef Khelfa
- Credential
- M.D
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- C138847 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Greenley RD, Sonora, CA 95370
- Phone
- (209) 536-3359
- Enumerated
- May 22, 2007
- Record last updated
- Sep 6, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20250415000956); 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 1000 Greenley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Penny Ablin, M.D.Emergency Medicine Physician1861486813
- Andrew Addley, CRNACertified Registered Nurse Anesthetist1356976724
- Masoud AhmadzaiPharmacist1417520727
- Mary Allard, PHARMDPharmacist1013854371
- Arturo Alvarez Antezana, MDInternal Medicine Physician1457847154
- Charles Black, D.O.Orthopaedic Surgery Physician1790988087
Verify Yousef Khelfa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C138847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,325 Medicare Part D claims for 426 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 248 claims were for opioids.
Most prescribed
- Anastrozole194 claims
- Prednisone143 claims
- Ondansetron Hcl135 claims
- Abiraterone Acetate130 claims
- Potassium Chloride117 claims
- Dexamethasone105 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): 79.2 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 2 group practices
- Sonora Community HospitalSonora, CA
- Sutter Valley Medical FoundationModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yousef Khelfa among 1,583 hematology & oncology physician records in California
Yousef Khelfa, 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2003 · median 2003 among the 1,124 with a school on file
- Record last updated2017 · 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 Sonora → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Yu Cheng, M.D.Tracy, CA 953771003241118
- Jincy Clement, M.D.Turlock, CA 953821447484225
- Mohamed Eldaly, M.D.Turlock, CA 953821962501718
- Belinda Ark, MDModesto, CA 953561366520272
- Megumi Tomita, MDModesto, CA 953561740354331
- David Adkins, MDModesto, CA 953551104883644
- Swati Andhavarapu, M.DModesto, CA 953551225258668
- Adithya Chennamadhavuni, M.D.Modesto, CA 953551669880522
Common questions
What is Yousef Khelfa, M.D's NPI number?
Yousef Khelfa, M.D's National Provider Identifier (NPI) is 1396954392, issued on May 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Yousef Khelfa, M.D located?
The NPPES record lists a practice address at 1000 Greenley RD, Sonora, CA, 95370. Phone: (209) 536-3359. Providers update this record themselves, so call before visiting.
How can I verify Yousef Khelfa, M.D's license?
NPPES lists California license number C138847, 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 Yousef Khelfa, M.D prescribe under Medicare Part D?
In 2024, Yousef Khelfa, M.D had 2,325 Medicare Part D claims for 426 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Yousef Khelfa, M.D's MIPS final score?
The 2023 MIPS final score is 79.2 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.