Isla Mariann McKerrow Johnson, MD
Hematology & Oncology Physician · Rochester, MN
Isla Mariann McKerrow Johnson, MD is a hematology & oncology physician with a practice address in Rochester, Minnesota, and NPI 1417585571, issued on Apr 1, 2020. Check the license (Minnesota 70741, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Isla Mariann McKerrow Johnson
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 70741 MN
30942 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
- Apr 1, 2020
- Record last updated
- Jun 30, 2023
- Medicare enrollment
- Enrolled (PECOS I20220210001310); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 274 in Minnesota → Look up another NPI →
Also registered at 200 1St St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Timothy Aadland, M.D.Diagnostic Radiology Physician1780662783
- Christopher Aakre, MDInternal Medicine Physician1508151663
- Kathryn Aaro, P.T.Physical Therapist1619360666
- Danielle Aase, MDReproductive Endocrinology Physician1316524135
- Uzoamaka Abajue, PHARMDPharmacist1982335295
- Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246
Verify Isla Mariann McKerrow Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 70741Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
128 Medicare Part D claims for 42 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Acyclovir12 claims
- Prochlorperazine Maleate12 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
- Mayo ClinicRochester, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isla Mariann McKerrow Johnson among 274 hematology & oncology physician records in Minnesota
Isla Mariann McKerrow Johnson, MD is one of 274 hematology & oncology physician records with a practice address in Minnesota. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 83% of them.
- NPI issued2020 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2020 · median 2009 among the 208 with a school on file
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Minnesota
There are 274 hematology & oncology physician records in Minnesota.
All 274 in Minnesota → Every provider in Rochester → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Hassan Alkhateeb, M.DRochester, MN 559051982931705
- Deepti Behl, M.D.Rochester, MN 559051538172143
- Timothy Call, M.D.Rochester, MN 559051326024829
- Robert Dalton, M.D.Rochester, MN 559051740267467
- Moussab Damlaj, MDRochester, MN 559051891195186
- Jonathan Day, MD, PHARMDRochester, MN 559051730587429
- Dhauna Karam Chandra Mohan Prasad, M.D.Rochester, MN 559051265810923
- Brian Koh, MDRochester, MN 559051215135900
Common questions
What is Isla Mariann McKerrow Johnson, MD's NPI number?
Isla Mariann McKerrow Johnson, MD's National Provider Identifier (NPI) is 1417585571, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Isla Mariann McKerrow Johnson, 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 Isla Mariann McKerrow Johnson, MD's license?
NPPES lists Minnesota license number 70741, 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 Isla Mariann McKerrow Johnson, MD prescribe under Medicare Part D?
In 2024, Isla Mariann McKerrow Johnson, MD had 128 Medicare Part D claims for 42 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.