NPPES file of Aug 9, 2026

Jacob Ron Greenmyer, MD

Pediatric Hematology & Oncology Physician · Rochester, MN

Jacob Ron Greenmyer, MD is a pediatric hematology & oncology physician with a practice address in Rochester, Minnesota, and NPI 1891323564, issued on Mar 30, 2020. Check the license (Minnesota 69582, as entered in NPPES) on the Minnesota Board of Medical Practice; 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
1891323564
Name
Jacob Ron Greenmyer
Credential
MD
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License numbers
69582 MN
30904 MN
Self-reported in NPPES; status is on the state search
Practice location
200 1St St SW, Rochester, MN 55905
Phone
(507) 284-2511
Enumerated
Mar 30, 2020
Record last updated
Jun 19, 2025
Medicare enrollment
Enrolled (PECOS I20210805000252); accepts Medicare assignment
Medical or professional school
University Of North Dakota School Of Medicine, 2020
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 200 1St St SW

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

  1. Timothy Aadland, M.D.Diagnostic Radiology Physician1780662783
  2. Christopher Aakre, MDInternal Medicine Physician1508151663
  3. Kathryn Aaro, P.T.Physical Therapist1619360666
  4. Danielle Aase, MDReproductive Endocrinology Physician1316524135
  5. Uzoamaka Abajue, PHARMDPharmacist1982335295
  6. Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246

Verify Jacob Ron Greenmyer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 69582
    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 Minnesota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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71% fewer Medicare Part D claims than the average pediatric hematology & oncology physician in 2024

27 Medicare Part D claims for 11 beneficiaries, against an average of 94 among the 300 providers of this specialty who prescribed in Part D.

  1. Jacob Greenmyer27
  2. Specialty average94

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. Mayo ClinicRochester, MN

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

Pediatric Hematology & Oncology Physician providers in Minnesota

There are 77 pediatric hematology & oncology physician records in Minnesota.

Other pediatric hematology & oncology physician records in Minnesota

  1. Ahmad Al-Huniti, M.DRochester, MN1841632965
  2. Wendy Allen-Rhoades, M.D.Rochester, MN1700045655
  3. Carola Arndt, M.D.Rochester, MN1619941010
  4. Kelly Bailey, MD, PHDRochester, MN1457672941
  5. Anne Bendel, MDMinneapolis, MN1508830092
  6. Bruce Blazar, M.D.Minneapolis, MN1003842162
  7. Laura Bou-Maroun, MDMinneapolis, MN1962908731
  8. Alexander Boucher, MDMinneapolis, MN1194083675
  9. Richard Bram, M.D.Rochester, MN1689648107
  10. Christen Ebens, M.D.Minneapolis, MN1386846095

Common questions

What is Jacob Ron Greenmyer, MD's NPI number?

Jacob Ron Greenmyer, MD's National Provider Identifier (NPI) is 1891323564, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Jacob Ron Greenmyer, MD located?

The NPPES record lists a practice address at 200 1St St SW, Rochester, MN, 55905. Phone: (507) 284-2511. Providers update this record themselves, so call before visiting.

How can I verify Jacob Ron Greenmyer, MD's license?

NPPES lists Minnesota license number 69582, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jacob Ron Greenmyer, MD prescribe under Medicare Part D?

In 2024, Jacob Ron Greenmyer, MD had 27 Medicare Part D claims for 11 beneficiaries; the average among pediatric hematology & oncology physician prescribers was 94. 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.