Grant William Jirka, MD
Hematology & Oncology Physician · Los Angeles, CA
Grant William Jirka, MD is a hematology & oncology physician with a practice address in Los Angeles, California, and NPI 1326667346, issued on Apr 9, 2020. Check the license (California 187091, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Grant William Jirka
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 187091 CA
MT220309 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1441 Eastlake Ave # Ntt3440, Los Angeles, CA 90089
- Phone
- (323) 865-3823
- Enumerated
- Apr 9, 2020
- Record last updated
- Nov 20, 2023
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify Grant William Jirka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 187091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
120 Medicare Part D claims for 53 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of 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: $3,015.11
88 payments; by number, the most common kind was 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.
Grant William Jirka among 1,583 hematology & oncology physician records in California
Grant William Jirka, 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 2020, is newer than 97% of them.
- NPI issued2020 · 97% of these records are older, 2% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2023 · 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 Los Angeles → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Preet Chaudhary, M.D., PHDLos Angeles, CA 900891487626354
- Gino In, MDLos Angeles, CA 900891912227273
- Kevin Kelly, M.D.Los Angeles, CA 900891093963712
- Howard Liebman, M.D.Los Angeles, CA 900891134159775
- Ann Mohrbacher, M.D.Los Angeles, CA 900891275578957
- Jorge Nieva, M.D.Los Angeles, CA 900891497717672
- Casey O'Connell, M.D.Los Angeles, CA 900891104039197
- Raghuveer Ranganathan, M.D.Los Angeles, CA 900891831354356
Common questions
What is Grant William Jirka, MD's NPI number?
Grant William Jirka, MD's National Provider Identifier (NPI) is 1326667346, issued on Apr 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Grant William Jirka, MD located?
The NPPES record lists a practice address at 1441 Eastlake Ave # Ntt3440, Los Angeles, CA, 90089. Phone: (323) 865-3823. Providers update this record themselves, so call before visiting.
How can I verify Grant William Jirka, MD's license?
NPPES lists California license number 187091, 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 Grant William Jirka, MD prescribe under Medicare Part D?
In 2024, Grant William Jirka, MD had 120 Medicare Part D claims for 53 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.