NPPES file of Aug 9, 2026

Isaac Kaufman, M.D.

Radiation Oncology Physician · Traverse City, MI

Isaac Kaufman, M.D. is a radiation oncology physician with a practice address in Traverse City, Michigan, and NPI 1821230921, issued on Apr 3, 2009. Check the license (Michigan 4301094612, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821230921
Name
Isaac Kaufman
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
4301094612 MI
Self-reported in NPPES; status is on the state search
Practice location
1105 6TH Street, Traverse City, MI 49684
Phone
(231) 935-5000
Enumerated
Apr 3, 2009
Record last updated
Jun 25, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(231) 935-7126
Medicare enrollment
Enrolled (PECOS I20140708001923); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 2009
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1105 6TH Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adrienne Maresca, PA-CMedical Physician Assistant1790873727
  2. Sara Roth, MDInternal Medicine Physician1912973389

Verify Isaac Kaufman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301094612
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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12% fewer Medicare Part D claims than the average radiation oncology physician in 2024

118 Medicare Part D claims for 64 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Isaac Kaufman118
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl43 claims
  2. Methylprednisolone12 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

  1. Petoskey Radiation Oncology PLCPetoskey, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Isaac Kaufman among 239 radiation oncology physician records in Michigan

Isaac Kaufman, M.D. 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 2009, is newer than 56% of them.

  • NPI issued2009 · 56% of these records are older, 41% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2009 · median 2005 among the 172 with a school on file
  • Record last updated2014 · 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).

Radiation Oncology Physician providers in Michigan

There are 239 radiation oncology physician records in Michigan.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Michael Aja, MDTravese City, MI 496841194747915
  2. Jessica Arden, M.D., PHDTraverse City, MI 496841235588344
  3. Douglas Brown, MDTravese City, MI 496841851312672
  4. Neil Forster, MDTraverse City, MI 496841861755001
  5. David Heimburger, MDTraverse City, MI 496841437172608
  6. Thomas Howard, MD, PHDTraverse City, MI 496841477130953
  7. Robert Laporte, MDTraverse City, MI 496841255315891
  8. Robert Prust, MDTraverse City, MI 496841629099437

Common questions

What is Isaac Kaufman, M.D.'s NPI number?

Isaac Kaufman, M.D.'s National Provider Identifier (NPI) is 1821230921, issued on Apr 3, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Isaac Kaufman, M.D. located?

The NPPES record lists a practice address at 1105 6TH Street, Traverse City, MI, 49684. Phone: (231) 935-5000. Providers update this record themselves, so call before visiting.

How can I verify Isaac Kaufman, M.D.'s license?

NPPES lists Michigan license number 4301094612, 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 Isaac Kaufman, M.D. prescribe under Medicare Part D?

In 2024, Isaac Kaufman, M.D. had 118 Medicare Part D claims for 64 beneficiaries; 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.