Dr. Martin Majer, MD

  • Apple Valley, CA
  • Hematologist and oncologist
NPI1376749234PAC ID4486609476
Medicare services, 2024
265
Medicare patients, 2024
121
Part D claims, 2024
285
Publications
9
MIPS score, 2024
100
Practice address
18564 Us-18, Apple Valley, CA 92307
Practice phone
Call (760) 503-5910
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Interventional Radiation Oncology of California Inc

Apple Valley, California

See all 7 affiliations

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Dr. Martin Majer is a hematologist and oncologist in Apple Valley, California

Dr. Majer practices at Interventional Radiation Oncology of California Inc in Apple Valley, California.

Dr. Majer's NPI, 1376749234, was assigned on June 26, 2007. Dr. Majer graduated from Charles University - Karlova and Hradci Faculty of Medicine in 1987. Dr. Majer holds Montana license MED-PHYS-LIC-112718.

NPI and contact details
Medicare PAC ID
4486609476
NPI enumeration date
June 26, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(760) 503-5910
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
65
Medical school graduation
1987

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

Dr. Martin Majer practices at Interventional Radiation Oncology of California Inc in Apple Valley, California

Dr. Majer's primary practice is Interventional Radiation Oncology of California Inc, at 18564 Us-18, Apple Valley, CA 92307 in San Bernardino County. The practice phone is (760) 503-5910.

  • Interventional Radiation Oncology of California Inc
    18564 Us-18, Apple Valley, CA 92307 · San Bernardino CountyPhone(760) 503-5910

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

Dr. Martin Majer is affiliated with 5 sites of care and 2 medical groups

Dr. Majer's primary practice is Interventional Radiation Oncology of California Inc in Apple Valley, California. Dr. Majer is also affiliated with Riverside Community Hospital. The medical group on file is Western Radiation Oncology. Dmand AI also links Dr. Majer to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.

See all 7 affiliations for Dr. Majer

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

Dmand AI tracks the EHR system at Dr. Martin Majer's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Majer practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Interventional Radiation Oncology of California IncAvailable with a free account
+4 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Martin Majer is one of 1,502 hematologists and oncologists in California

Hematology and oncology is Dr. Majer's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Majer is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Majer's licenses on file in 4 states: Montana, Oregon, California and Utah.

Specialties and state licenses

  • Hematology and oncology, MontanaPrimaryLicense MED-PHYS-LIC-112718 · 2022 to 2026 · taxonomy 207RH0003X
  • Oregon licenseSince 2007
  • California licenseLicense A68238 · 1999 to 2026
  • Utah license2004 to 2008

Clinical focus

Dmand AI lists arterial blot clot /embolism, breast cancer, chronic anemia, chronic embolism thrombosis, chronic leukemia, colorectal cancer, deep vein thrombosis (DVT) and lung cancer among the conditions Dr. Majer treats.

Hematologists and oncologists near Dr. Majer

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

1,502hematologists and oncologists in California
2hematologists and oncologists in Apple Valley

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

Dr. Martin Majer billed Medicare for 265 services in 2024

CMS data shows 265 Medicare services from Dr. Majer across 5 procedure codes in 2024, for 121 Medicare patients. Medicare paid $21,601 for them.

Medicare services, 2024265
Medicare patients121
Paid by Medicare$21,601
Procedure codes5

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

  • 2023
  • 2024
Office and hospital visits
2023: 1,2762024: 26579%
Other services
2023: 182024: 0100%

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

  • In an office3011%
  • In a facility23589%

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

  • Dr. Majer
  • California median
Medicare services
265vs 93272% below
Medicare patients
121vs 22546% below
Part D claims
139vs 39465% below

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

Dr. Majer'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. Majer

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

Dr. Martin Majer treated 121 Medicare patients in 2024, average age 74

CMS counts 121 Medicare patients who saw Dr. Majer in 2024. The largest group is 65 to 74, with 68 patients. 69% of them have high blood pressure, and 61% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.12, 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. Majer's median patient age at 69, with 62% women.

Medicare patients, 2024121
Average age74
Average risk score2.12
Also on Medicaid19%

Dr. Majer's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Majer's Medicare patients by sex, 2024

  • Women7058%
  • Men5142%

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

  1. High blood pressure69%
  2. High cholesterol61%
  3. Cancer53%
  4. Arthritis42%
  5. Diabetes36%
  6. Ischemic heart disease34%
  7. Anxiety25%
  8. Atrial fibrillation25%

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

Dr. Majer's patients across all payers

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

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women62%
  • Men38%

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

Dr. Martin Majer wrote 285 Medicare Part D claims in 2024

In 2024, Dr. Majer wrote 285 Medicare Part D claims for 79 patients. 74% of them were for generic drugs. CMS names the drug for 139 of them, across 8 drugs with 11 or more claims each, at $412,385 in total drug cost. In 2023, CMS named 385 claims across 17 drugs.

Part D claims, 2024285
Drugs named by CMS8
Total drug cost$412,385
Part D patients79

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

  • Generic212 claims74%
  • Brand-name73 claims26%

Dr. Majer'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: 3852024: 13964%

Drugs named by CMS: 8 in 2024, 17 in 2023.

See all prescribing by Dr. Majer

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. Martin Majer scored 100 out of 100 in Medicare's MIPS program for 2024

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

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Majer's MIPS scores, performance year 2024

  • 100of 100Final score
  • 89.3of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

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. Martin Majer has 9 publications on record

Dmand AI links 9 papers to Dr. Majer in 2012. The most frequent topics are Base Sequence, Diabetes Mellitus, Type 2 and RNA, Messenger. Dr. Majer has published most often in Cancer. Dr. Majer's most frequent co-author is Scott K. Kuwada, MD.

Papers9

Topics Dr. Majer writes about most

  • Base Sequence
  • Diabetes Mellitus, Type 2
  • RNA, Messenger
  • Brain Neoplasms
  • Indians, North American
  • Insulin Resistance
  • Molecular Sequence Data
  • Muscle, Skeletal

Dr. Majer's most frequent co-authors

Recent publications by Dr. Majer

See all 9 publications and co-authors

See who Dr. Majer researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Majer 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. Martin Majer received $8,610 in industry payments from 2016 to 2025

CMS Open Payments shows 249 general payments to Dr. Majer from 48 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 79% of the total. Novartis Pharmaceuticals Corporation paid the most, $1,772.

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

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

$8.6Kin total
  • Food and beverage$6,79079%
  • Device or supply loans$1,28015%
  • Education$5406%

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

Share is of all general payments to this clinician.

See all payments to Dr. Majer

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

Dr. Martin Majer graduated from Charles University - Karlova and Hradci Faculty of Medicine

Dr. Majer graduated from Charles University - Karlova and Hradci Faculty of Medicine in 1987.

  1. Medical schoolCharles University - Karlova and Hradci Faculty of Medicine
  2. Board certified in hematologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in medical oncologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Martin Majer accepts plans from 15 insurance carriers

Dr. Majer is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

Plan types Dr. Majer accepts, by number of carriers

  1. Medicare10
  2. PPO9
  3. HMO7
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. Martin Majer'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
Industry paymentsOpen Payments (CMS) (opens in a new tab)
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. Martin Majer

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. Martin Majer's NPI number?

Dr. Martin Majer's NPI number is 1376749234. It was assigned on June 26, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Martin Majer?

Dr. Martin Majer is a hematologist and oncologist in Apple Valley, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).

Where does Dr. Martin Majer practice?

Dr. Majer practices at 18564 Us-18, Apple Valley, CA 92307. Dr. Majer's primary practice is Interventional Radiation Oncology of California Inc in Apple Valley, California. Dmand AI also links Dr. Majer to 1 hospital, 2 group practices and clinics and 1 medical group.

What is Dr. Martin Majer's office phone number?

The practice phone on file for Dr. Majer is (760) 503-5910.

What is Dr. Martin Majer's medical license number?

Dr. Majer holds Montana license MED-PHYS-LIC-112718, one of the licenses on file in 4 states.

Which states has Dr. Martin Majer been licensed in?

Dmand AI has state licenses on file for Dr. Majer in Montana (2022 to 2026), Oregon (since 2007), California (1999 to 2026) and Utah (2004 to 2008).

Which hospitals is Dr. Martin Majer affiliated with?

Dr. Majer is affiliated with Riverside Community Hospital. Dmand AI links Dr. Majer to 1 more hospital.

What medical group is Dr. Martin Majer part of?

Dr. Majer is linked to Western Radiation Oncology. Dmand AI links Dr. Majer to 1 more medical group.

Does Dr. Martin Majer accept Medicare?

Yes. CMS data shows Dr. Majer billed Medicare for 265 services in 2024, and Dr. Majer accepts Medicare assignment.

Does Dr. Martin Majer offer telehealth?

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

Show 11 more questionsShow fewer questions

What is Dr. Martin Majer's MIPS score?

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

How many Medicare patients does Dr. Martin Majer see?

CMS counts 121 Medicare patients who saw Dr. Majer in 2024, with an average age of 74.

Is Dr. Martin Majer board certified?

Yes. Dr. Majer is board certified in hematology by the American Board of Internal Medicine.

What services does Dr. Martin Majer bill to Medicare?

In 2024, Dr. Majer's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and office visit, established patient (99215).

Where did Dr. Martin Majer go to medical school?

Dr. Majer graduated from Charles University - Karlova and Hradci Faculty of Medicine in 1987.

What drugs does Dr. Martin Majer prescribe most?

In 2024 Medicare Part D data, Dr. Majer's most prescribed drugs by claims were Anastrozole, Ondansetron ODT and Hydroxyurea.

Has Dr. Martin Majer received payments from drug or device companies?

CMS Open Payments shows $8,610 in general payments to Dr. Majer from 48 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.

How long has Dr. Martin Majer been practicing?

Dr. Majer graduated from medical school in 1987, 39 years ago.

Does Dr. Martin Majer do research?

Dmand AI links 9 publications to Dr. Majer.

Who does Dr. Martin Majer publish with?

Dr. Majer's most frequent co-authors are Scott K. Kuwada, MD (1 shared paper).

What insurance does Dr. Martin Majer accept?

Dr. Majer is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

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