James Irwin Ewing, M.D.
Medical Oncology Physician · Glendale, AZ
James Irwin Ewing, M.D. is a medical oncology physician with a practice address in Glendale, Arizona, and NPI 1689837601, issued on Jul 9, 2008. Check the license (Arizona 47444, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Irwin Ewing
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 47444 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5810 W Beverly LN, Glendale, AZ 85306
- Phone
- (623) 312-3000
- Enumerated
- Jul 9, 2008
- Record last updated
- Nov 17, 2022
- Fax
- (623) 312-3060
- Medicaid ID
- 815100 AZ
- Medicare enrollment
- Enrolled (PECOS I20130624000335); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 63 in Arizona → Look up another NPI →
Also registered at 5810 W Beverly LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rajesh Bagai, MDHematology & Oncology Physician1306866736
- Andrei BalandinHematology & Oncology Physician1427225986
- Amber Berleen, FNPFamily Nurse Practitioner1851890222
- Patricia Bolivar, LMSWSocial Worker1720870876
- Elisa Bomgaars, MDHematology & Oncology Physician1841220225
- Lauren Duda, RDNRegistered Dietitian1770194615
Verify James Irwin Ewing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 47444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average medical oncology physician in 2024
1,420 Medicare Part D claims for 249 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Eliquis108 claims
- Letrozole99 claims
- Acyclovir94 claims
- Dexamethasone92 claims
- Prednisone82 claims
- Ondansetron Odt67 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 MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $5,495.45
99 payments; by number, the most common kind was food and beverage; the largest payer was BeiGene USA, Inc. The 3,343 providers of this specialty with any payment received $11,773.47 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.
Bills Medicare through one group practice
- Ironwood Physicians PCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Irwin Ewing among 63 medical oncology physician records in Arizona
James Irwin Ewing, M.D. is one of 63 medical oncology physician records with a practice address in Arizona. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 68% of them.
- NPI issued2008 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2008 · median 2001 among the 53 with a school on file
- Record last updated2022 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Arizona
There are 63 medical oncology physician records in Arizona.
All 63 in Arizona → Every provider in Glendale → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Nazish Ahmad, D.OGlendale, AZ 853041609187921
- Lamia Boric, M.D.Glendale, AZ 853081689881898
- Maqbool Halepota, M.D.Glendale, AZ 853041558384966
- Martin Langford, M.D.Glendale, AZ 853041992729826
- Demetrio Mamani, M.D.Glendale, AZ 853041598788499
- Sumeet Mendonca, M.D.Gilbert, AZ 852971518991223
- Joshua Labaer, M.D., PH.D.Tempe, AZ 852871528258662
- Arjun Gupta, MBBSGoodyear, AZ 853381851710651
Common questions
What is James Irwin Ewing, M.D.'s NPI number?
James Irwin Ewing, M.D.'s National Provider Identifier (NPI) is 1689837601, issued on Jul 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is James Irwin Ewing, M.D. located?
The NPPES record lists a practice address at 5810 W Beverly LN, Glendale, AZ, 85306. Phone: (623) 312-3000. Providers update this record themselves, so call before visiting.
How can I verify James Irwin Ewing, M.D.'s license?
NPPES lists Arizona license number 47444, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Irwin Ewing, M.D. prescribe under Medicare Part D?
In 2024, James Irwin Ewing, M.D. had 1,420 Medicare Part D claims for 249 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is James Irwin Ewing, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.6 of 100. 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.