Diane Jennifer Prager, MD
Hematology & Oncology Physician · Torrance, CA
Diane Jennifer Prager, MD is a hematology & oncology physician with a practice address in Torrance, California, and NPI 1003883562, issued on Mar 3, 2006. Check the license (California A49254, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diane Jennifer Prager
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A49254 CA
036115134 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3445 Pacific Coast Hwy Ste 300, Torrance, CA 90505
- Phone
- (310) 325-8252
- Enumerated
- Mar 3, 2006
- Record last updated
- Dec 6, 2023
- Medicare enrollment
- Enrolled (PECOS I20191220001513); 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 3445 Pacific Coast Hwy Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Parvin Peddi, MDMedical Oncology Physician1750504577
- Manan Shah, MDHematology & Oncology Physician1720549561
Verify Diane Jennifer Prager in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A49254Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
153 Medicare Part D claims for 41 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Anastrozole33 claims
- Eliquis14 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): 99.1 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Jennifer Prager among 1,583 hematology & oncology physician records in California
Diane Jennifer Prager, 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
- Graduated1982 · median 2003 among the 1,124 with a school on file
- 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 Torrance → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Arshad Ahad, MDTorrance, CA 905051487647293
- David Chan, MDTorrance, CA 905051972591378
- Michael Chung, M.D.Torrance, CA 905051053574608
- Amy CummingsTorrance, CA 905051043552243
- Vanessa Dickey, MDTorrance, CA 905051497742472
- Hugo Hool, MDTorrance, CA 905051417944489
- Syed Jilani, MDTorrance, CA 905051629067442
- Thomas Lowe, M.D.Torrance, CA 905051801968334
Common questions
What is Diane Jennifer Prager, MD's NPI number?
Diane Jennifer Prager, MD's National Provider Identifier (NPI) is 1003883562, issued on Mar 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane Jennifer Prager, MD located?
The NPPES record lists a practice address at 3445 Pacific Coast Hwy Ste 300, Torrance, CA, 90505. Phone: (310) 325-8252. Providers update this record themselves, so call before visiting.
How can I verify Diane Jennifer Prager, MD's license?
NPPES lists California license number A49254, 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 Diane Jennifer Prager, MD prescribe under Medicare Part D?
In 2024, Diane Jennifer Prager, MD had 153 Medicare Part D claims for 41 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Diane Jennifer Prager, MD's MIPS final score?
The 2023 MIPS final score is 99.1 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.