Mauro C. Janoski, MD
Hematology & Oncology Physician · Downey, CA
Mauro C. Janoski, MD is a hematology & oncology physician with a practice address in Downey, California, and NPI 1154386290, issued on Apr 20, 2006. Check the license (California C54846, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mauro C. Janoski
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- C54846 CA
40198 TN
84139 WI
Self-reported in NPPES; status is on the state search - Practice location
- 11480 Brookshire Ave., Downey, CA 90241
- Phone
- (562) 869-1201
- Enumerated
- Apr 20, 2006
- Record last updated
- Jan 7, 2026
- Fax
- (562) 869-1201
- Medicare enrollment
- Enrolled (PECOS I20240605002119); 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 11480 Brookshire Ave.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steve Tai, P.A.Physician Assistant1790193894
Verify Mauro C. Janoski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C54846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
237 Medicare Part D claims for 78 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 16 claims were for opioids.
Most prescribed
- Duloxetine Hcl16 claims
- Eliquis15 claims
- Prednisone14 claims
- Hydroxyurea12 claims
- Anastrozole11 claims
- Tamsulosin Hcl11 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.
Industry payments in 2024: $16.87
1 payment: food and beverage; the largest payer was Abbvie Inc. 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.
Bills Medicare through one group practice
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mauro C. Janoski among 1,583 hematology & oncology physician records in California
Mauro C. Janoski, 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 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 fileYes · 71% of these records are
- Graduated1983 · median 2003 among the 1,124 with a school on file
- Record last updated2026 · 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 Downey → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Richy Agajanian, M.D.Downey, CA 902411922116664
- Nelly Awkar Lazo, M.DDowney, CA 902411326351537
- Chaiyaporn Boonchalermvichian, MDDowney, CA 902411801046867
- Brian Chun Fang Cheng, M.D.Downey, CA 902411215315940
- Soo Chung, M.D.Downey, CA 902411245293729
- Howard Fellows, M.D.Downey, CA 902411659365526
- Anthony Giorgio, MDDowney, CA 902411801902721
- Haydee Gonzalez Hidalgo, MDDowney, CA 902411912071481
Common questions
What is Mauro C. Janoski, MD's NPI number?
Mauro C. Janoski, MD's National Provider Identifier (NPI) is 1154386290, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mauro C. Janoski, MD located?
The NPPES record lists a practice address at 11480 Brookshire Ave., Downey, CA, 90241. Phone: (562) 869-1201. Providers update this record themselves, so call before visiting.
How can I verify Mauro C. Janoski, MD's license?
NPPES lists California license number C54846, 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 Mauro C. Janoski, MD prescribe under Medicare Part D?
In 2024, Mauro C. Janoski, MD had 237 Medicare Part D claims for 78 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
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.