Brian D. Kastner, MD
Radiation Oncology Physician · East Grand Rapids, MI
Brian D. Kastner, MD is a radiation oncology physician with a practice address in East Grand Rapids, Michigan, and NPI 1396767752, issued on Jul 24, 2006. Check the license (Michigan 077557, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Brian D. Kastner
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 077557 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1840 Wealthy St SE, East Grand Rapids, MI 49506
- Phone
- (616) 774-7845
- Enumerated
- Jul 24, 2006
- Record last updated
- Dec 9, 2025
- Medicaid ID
- 4311107 MI
- Medicare enrollment
- Enrolled (PECOS I20100604001122); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1996
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 239 in Michigan → Look up another NPI →
Also registered at 1840 Wealthy St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edward Lee, DORadiation Oncology Physician1013930577
Verify Brian D. Kastner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 077557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average radiation oncology physician in 2024
49 Medicare Part D claims for 32 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Memantine Hcl11 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Radiation Oncology Centers PCHolland, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian D. Kastner among 239 radiation oncology physician records in Michigan
Brian D. Kastner, MD is one of 239 radiation oncology physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 55% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1996 · median 2005 among the 172 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 radiation oncology physician records list a practice address in East Grand Rapids
They are 2 of the 43 NPPES records with a practice address in East Grand Rapids, and 239 radiation oncology physician records in Michigan.
All 239 in Michigan → Every provider in East Grand Rapids → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Edward Lee, DOEast Grand Rapids, MI 495061013930577
- Joshua Corteville, MDGrand Rapids, MI 495031093203457
- John Edlund, MDGrand Rapids, MI 495031841215878
- Celine Eid, MDGrand Rapids, MI 495031447047774
- Patrick Fabrizio, MDGrand Rapids, MI 495031356350938
- Anudeeta Gautam, MDGrand Rapids, MI 495031699562017
- Robert Kirkland, MDGrand Rapids, MI 495031578940029
- Michael Mahacek, MDGrand Rapids, MI 495031922021484
Common questions
What is Brian D. Kastner, MD's NPI number?
Brian D. Kastner, MD's National Provider Identifier (NPI) is 1396767752, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian D. Kastner, MD located?
The NPPES record lists a practice address at 1840 Wealthy St SE, East Grand Rapids, MI, 49506. Phone: (616) 774-7845. Providers update this record themselves, so call before visiting.
How can I verify Brian D. Kastner, MD's license?
NPPES lists Michigan license number 077557, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian D. Kastner, MD prescribe under Medicare Part D?
In 2024, Brian D. Kastner, MD had 49 Medicare Part D claims for 32 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Brian D. Kastner, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.