Dr. Diane Jennifer Prager, MD
- 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
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oncology Physicians Network of California
Victorville, California
Find Dr. Prager's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
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
- 1003883562NPI Registry (opens in a new tab)
- 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 California12998 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.
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.
| Site | EHR vendor and product |
|---|---|
| Oncology Physicians Network of California | Available with a free account |
| +5 more sites and 1 medical group | Available 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, CaliforniaPrimary
- Washington license
- Illinois license
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.
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.
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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Prager and other hematologists and oncologists in California.
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.
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
- High cholesterol75%
- High blood pressure74%
- Arthritis50%
- Cancer43%
- Chronic kidney disease32%
- Diabetes32%
- Ischemic heart disease29%
- 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.
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.
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.
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
- Shlomo Melmed, MD18 shared papers
- Joseph D. Rosenblatt, MD4 shared papers
- Chandra P. Belani, MD3 shared papers
Recent publications by Dr. Prager
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.
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
- NonePhase 1: no trials
- 1Phase 1/2: 1 trial
- 5Phase 2: 5 trials
- 1Phase 2/3: 1 trial
- NonePhase 3: no trials
- 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
- Kader Tawfiq Abdelerahman, MD10 shared trials
- Randa Abdelmasih, MD10 shared trials
- Marjorie E. Affel, MD10 shared trials
Recent clinical trials with Dr. Prager
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
- 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.
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
- 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.
- Medical school
- Board certified in medical oncology
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
- Medicare9
- PPO8
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Diane Jennifer Prager's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors 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-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand 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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