Robert A. Ivker, DO
Radiation Oncology Physician · West Orange, NJ
Robert A. Ivker, DO is a radiation oncology physician with a practice address in West Orange, New Jersey, and NPI 1922133057, issued on Feb 22, 2007. Check the license (New Jersey 25MB06193300, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Robert A. Ivker
- Credential
- DO
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 25MB06193300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 375 Mount Pleasant Ave Ste 250, West Orange, NJ 07052
- Phone
- (973) 323-1300
- Enumerated
- Feb 22, 2007
- Record last updated
- Mar 7, 2022
- Fax
- (973) 323-1319
- Medicaid ID
- 6676308 NJ
- Medicare enrollment
- Enrolled (PECOS I20050722000738); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1991
- Entity
- Type 1 · individual
Also registered at 375 Mount Pleasant Ave Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dina Esposito, NPOncology Clinical Nurse Specialist1164935466
- Louis Galdieri, MDUrology Physician1124024146
- George Johnson, M.D.Urology Physician1326145590
Verify Robert A. Ivker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MB06193300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average radiation oncology physician in 2024
17 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Tamsulosin Hcl17 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.
Bills Medicare through one group practice
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Radiation Oncology Physician providers in New Jersey
There are 153 radiation oncology physician records in New Jersey.
Other radiation oncology physician records in New Jersey
- Arvin Adler, D.O.Passaic, NJ1265430433
- Stuti Ahlawat, MDCamden, NJ1073801742
- Gregory Alexander, MDSewell, NJ1588157895
- Lemuel Ariaratnam, M.D.Mount Holly, NJ1326040890
- Sucha Asbell, MDCamden, NJ1770699605
- Young Bae, M.D.Toms River, NJ1124021423
- Joseph Baron, M.D.Toms River, NJ1851572481
- John Baumann, MDMonroe Twp, NJ1619917507
- David Billing, MD, PHDMontvale, NJ1760944714
- Kenneth Blank, MDPompton Plains, NJ1205864964
Common questions
What is Robert A. Ivker, DO's NPI number?
Robert A. Ivker, DO's National Provider Identifier (NPI) is 1922133057, issued on Feb 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert A. Ivker, DO located?
The NPPES record lists a practice address at 375 Mount Pleasant Ave Ste 250, West Orange, NJ, 07052. Phone: (973) 323-1300. Providers update this record themselves, so call before visiting.
How can I verify Robert A. Ivker, DO's license?
NPPES lists New Jersey license number 25MB06193300, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert A. Ivker, DO prescribe under Medicare Part D?
In 2024, Robert A. Ivker, DO had 17 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.