Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Isla Mariann McKerrow Johnson, MD

Individual provider Internal Medicine Physician · NPI 1417585571

Dr. Isla Mariann McKerrow Johnson, MD is a Hematology/Oncology in Rochester, Minnesota. Graduated from Oregon Health Sciences University School of Medicine in 2020, 6 years ago. Practices with Mayo Clinic, a 4,796-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Minnesota.

Years since qualifying
6
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
MN
In the registry since
2020
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 70741 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 30942 (MN)

Record details

NPI number1417585571
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 1, 2020
Last updated in NPPESJune 30, 2023
Certification dateJune 30, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2020 (6 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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