Dr. Diane Jennifer Prager, MD

  • Victorville, CA
  • Hematologist and oncologist
NPI1003883562PAC ID7810901022
Medicare services, 2024
14,745
Medicare patients, 2024
378
Part D claims, 2024
153
Publications
45
Clinical trials
13
Practice address
12998 Hesperia Rd, Victorville, CA 92395
Practice phone
Call (818) 507-4732
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Oncology Physicians Network of California

Victorville, California

See all 8 affiliations

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Dr. Diane Jennifer Prager is a hematologist and oncologist in Victorville, California

Dr. Prager practices at Oncology Physicians Network of California in Victorville, California.

Dr. Prager's NPI, 1003883562, was assigned on March 3, 2006. Dr. Prager graduated from University of the Witwatersrand in 1982. Dr. Prager holds California license A49254.

NPI and contact details
Medicare PAC ID
7810901022
NPI enumeration date
March 3, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(818) 507-4732
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
70
Medical school graduation
1982

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Diane Jennifer Prager practices at Oncology Physicians Network of California in Victorville, California

Dr. Prager's primary practice is Oncology Physicians Network of California, at 12998 Hesperia Rd, Victorville, CA 92395 in San Bernardino County. The practice phone is (818) 507-4732.

  • Oncology Physicians Network of California
    12998 Hesperia Rd, Victorville, CA 92395 · San Bernardino CountyPhone(818) 507-4732

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Diane Jennifer Prager is affiliated with 6 sites of care and 2 medical groups

Dr. Prager's primary practice is Oncology Physicians Network of California in Victorville, California. Dr. Prager is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Prager to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.

See all 8 affiliations for Dr. Prager

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Diane Jennifer Prager's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Prager practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Oncology Physicians Network of CaliforniaAvailable with a free account
+5 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Diane Jennifer Prager is one of 1,502 hematologists and oncologists in California

Hematology and oncology is Dr. Prager's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Prager is board certified in medical oncology by the American Board of Internal Medicine. Dmand AI has Dr. Prager's licenses on file in 3 states: California, Washington and Illinois.

Specialties and state licenses

  • Hematology and oncology, CaliforniaPrimaryLicense A49254 · 1991 to 2026 · taxonomy 207RH0003X
  • Washington license
  • Illinois licenseLicense 036115134 · 2006 to 2020

Clinical focus

Dmand AI lists breast cancer, chronic leukemia, colorectal cancer, lung cancer, lymphoma, multiple myeloma and prostate cancer among the conditions Dr. Prager treats.

Hematologists and oncologists near Dr. Prager

Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.

1,502hematologists and oncologists in California
4hematologists and oncologists in Victorville

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Diane Jennifer Prager billed Medicare for 14,745 services in 2024

CMS data shows 14,745 Medicare services from Dr. Prager across 34 procedure codes in 2024, for 378 Medicare patients. Medicare paid $217,493 for them.

Medicare services, 202414,745
Medicare patients378
Paid by Medicare$217,493
Procedure codes34

Dr. Prager's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Other services
2023: 02024: 8,982
Drugs given in the office
2023: 02024: 4,166
Tests and treatments
2023: 132024: 8356323%
Office and hospital visits
2023: 202024: 3681740%
Lab and pathology
2023: 222024: 2721136%
Surgery
2023: 02024: 122

Where Dr. Prager's Medicare services took place, 2024

  • In an office14,64299%
  • In a facility1031%

Dr. Prager compared with the California median for hematologists and oncologists, 2024

  • Dr. Prager
  • California median
Medicare services
14,745vs 93215.8 times
Medicare patients
378vs 22568% above
Part D claims
47vs 39488% below

Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.

Dr. Prager's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Prager

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Diane Jennifer Prager treated 378 Medicare patients in 2024, average age 75

CMS counts 378 Medicare patients who saw Dr. Prager in 2024. The largest group is 65 to 74, with 159 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 15% are also on Medicaid. Their average risk score is 2.13, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Prager's median patient age at 57, with 76% women.

Medicare patients, 2024378
Average age75
Average risk score2.13
Also on Medicaid15%

Dr. Prager's Medicare patients by age, 2024

Dr. Prager's Medicare patients by sex, 2024

  • Women23061%
  • Men14839%

Chronic conditions among Dr. Prager's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure74%
  3. Arthritis50%
  4. Cancer43%
  5. Chronic kidney disease32%
  6. Diabetes32%
  7. Ischemic heart disease29%
  8. Osteoporosis26%

Share of Medicare patients with each condition. A patient can have several.

Dr. Prager's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 57

Patient panel by sex, all payers

  • Women76%
  • Men23%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Diane Jennifer Prager wrote 153 Medicare Part D claims in 2024

In 2024, Dr. Prager wrote 153 Medicare Part D claims for 41 patients. 80% of them were for generic drugs. CMS names the drug for 47 of them, across 2 drugs with 11 or more claims each, at $8,324 in total drug cost. In 2023, CMS named 178 claims across 9 drugs.

Part D claims, 2024153
Drugs named by CMS2
Total drug cost$8,324
Part D patients41

Dr. Prager's Part D claims by kind of drug, 2024

  • Generic122 claims80%
  • Brand-name31 claims20%

Dr. Prager's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1782024: 4774%

Drugs named by CMS: 2 in 2024, 9 in 2023.

See all prescribing by Dr. Prager

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Diane Jennifer Prager scored 88 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Prager for performance year 2024, reported as part of a group. Dr. Prager accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Prager as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Prager's MIPS scores, performance year 2024

  • 88of 100Final score
  • 79.4of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 74of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Diane Jennifer Prager has 45 publications on record

Dmand AI links 45 papers to Dr. Prager, published from 2005 to 2014. 2010 was the busiest year, with 2. The most frequent topics are Molecular Sequence Data, Insulin-Like Growth Factor I and Base Sequence. Dr. Prager has published most often in J Clin Oncol. Dr. Prager's most frequent co-authors are Shlomo Melmed, MD, Joseph D. Rosenblatt, MD and Chandra P. Belani, MD.

Papers45
Years published2005 to 2014

Dr. Prager's papers by year, 2005 to 2014

Topics Dr. Prager writes about most

  • Molecular Sequence Data
  • Insulin-Like Growth Factor I
  • Base Sequence
  • Cell Line
  • Transfection
  • Growth Hormone
  • Receptor, IGF Type 1
  • Tumor Cells, Cultured

Dr. Prager's most frequent co-authors

Recent publications by Dr. Prager

See all 45 publications and co-authors

See who Dr. Prager researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Prager works with, so you can find a warm path to the right hematologists and oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Diane Jennifer Prager has worked on 13 clinical trials

Dmand AI links Dr. Prager to 13 clinical trials, 5 of them phase 2 studies. 9 are still active or recruiting. Conditions studied include Adenocarcinoma of Lung, Biliary Atresia and Low Back Pain. Jonsson Comprehensive Cancer Center sponsors the most, 2.

Clinical trials with Dr. Prager by phase

  1. NonePhase 1: no trials
  2. 1Phase 1/2: 1 trial
  3. 5Phase 2: 5 trials
  4. 1Phase 2/3: 1 trial
  5. NonePhase 3: no trials
  6. NonePhase 4: no trials

Trials with no phase (devices, behavioral studies) are left out.

Conditions in Dr. Prager's trials

  • Adenocarcinoma of Lung
  • Biliary Atresia
  • Low Back Pain
  • Malocclusion
  • Muscular Atrophy

Investigators on the most trials with Dr. Prager

Recent clinical trials with Dr. Prager

See all 13 clinical trials and co-investigators

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Diane Jennifer Prager received $3,430 in industry payments from 2016 to 2025

CMS Open Payments shows 203 general payments to Dr. Prager from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 81% of the total. Genentech, Inc. paid the most, $747.

General payments to Dr. Prager by program year, 2016 to 2025

General payments to Dr. Prager by kind, 2016 to 2025

$3.4Kin total
  • Food and beverage$2,77781%
  • Travel and lodging$49514%
  • Education$1585%

Companies that paid Dr. Prager the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Prager

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Diane Jennifer Prager has 1 award and honors on record

Dmand AI lists 1 award for Dr. Prager, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Prager

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Diane Jennifer Prager graduated from University of the Witwatersrand

Dr. Prager graduated from University of the Witwatersrand in 1982. Dr. Prager is a member of ACP.

  1. Medical schoolUniversity of the Witwatersrand
  2. Board certified in medical oncologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Diane Jennifer Prager accepts plans from 14 insurance carriers

Dr. Prager is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +6 more carriersWith a free account

Plan types Dr. Prager accepts, by number of carriers

  1. Medicare9
  2. PPO8
  3. HMO6
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. Diane Jennifer Prager's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Diane Jennifer Prager

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Diane Jennifer Prager's NPI number?

Dr. Diane Jennifer Prager's NPI number is 1003883562. It was assigned on March 3, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Diane Jennifer Prager?

Dr. Diane Jennifer Prager is a hematologist and oncologist in Victorville, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).

Where does Dr. Diane Jennifer Prager practice?

Dr. Prager practices at 12998 Hesperia Rd, Victorville, CA 92395. Dr. Prager's primary practice is Oncology Physicians Network of California in Victorville, California. Dmand AI also links Dr. Prager to 2 hospitals, 2 group practices and clinics and 1 medical group.

What is Dr. Diane Jennifer Prager's office phone number?

The practice phone on file for Dr. Prager is (818) 507-4732.

What is Dr. Diane Jennifer Prager's medical license number?

Dr. Prager holds California license A49254, one of the licenses on file in 3 states.

Which states has Dr. Diane Jennifer Prager been licensed in?

Dmand AI has state licenses on file for Dr. Prager in California (1991 to 2026), Washington and Illinois (2006 to 2020).

Which hospitals is Dr. Diane Jennifer Prager affiliated with?

Dr. Prager is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Prager to 2 more hospitals.

What medical group is Dr. Diane Jennifer Prager part of?

Dr. Prager is linked to UCLA Medical Group. Dmand AI links Dr. Prager to 1 more medical group.

Does Dr. Diane Jennifer Prager accept Medicare?

Yes. CMS data shows Dr. Prager billed Medicare for 14,745 services in 2024, and Dr. Prager accepts Medicare assignment.

Does Dr. Diane Jennifer Prager offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Prager as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Diane Jennifer Prager's MIPS score?

Dr. Prager's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.

How many Medicare patients does Dr. Diane Jennifer Prager see?

CMS counts 378 Medicare patients who saw Dr. Prager in 2024, with an average age of 75.

Is Dr. Diane Jennifer Prager board certified?

Yes. Dr. Prager is board certified in medical oncology by the American Board of Internal Medicine.

What services does Dr. Diane Jennifer Prager bill to Medicare?

In 2024, Dr. Prager's most billed Medicare services were medicare temporary code (Q0138), injected or infused drug (J1561) and injected or infused drug (J2469).

Where did Dr. Diane Jennifer Prager go to medical school?

Dr. Prager graduated from University of the Witwatersrand in 1982.

What drugs does Dr. Diane Jennifer Prager prescribe most?

In 2024 Medicare Part D data, Dr. Prager's most prescribed drugs by claims were Anastrozole and Eliquis.

Has Dr. Diane Jennifer Prager received payments from drug or device companies?

CMS Open Payments shows $3,430 in general payments to Dr. Prager from 29 companies from 2016 to 2025. The largest total came from Genentech, Inc.

How long has Dr. Diane Jennifer Prager been practicing?

Dr. Prager graduated from medical school in 1982, 44 years ago.

Does Dr. Diane Jennifer Prager do research?

Dmand AI links 45 publications to Dr. Prager, published from 2005 to 2014. Dr. Prager has worked on 13 clinical trials.

Who does Dr. Diane Jennifer Prager publish with?

Dr. Prager's most frequent co-authors are Shlomo Melmed, MD (18 shared papers), Joseph D. Rosenblatt, MD (4 shared papers) and Chandra P. Belani, MD (3 shared papers).

What insurance does Dr. Diane Jennifer Prager accept?

Dr. Prager is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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