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

Mr. John A. Charlson, MD

Individual provider Hematology & Oncology Physician · NPI 1386668192

Mr. John A. Charlson, MD is a Medical Oncology in Milwaukee, Wisconsin. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1999, 27 years ago. Practices with The Medical College of Wisconsin Inc, a 2,093-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
27
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
WI
In the registry since
2006
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

9200 W Wisconsin Ave Neoplastic Diseases Froedtert East Clinic Bldg
Milwaukee, WI 53226-3522
Phone: (414) 805-4612
Fax: (414) 805-6808
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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 42947 (WI)

Record details

NPI number1386668192
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 26, 2006
Last updated in NPPESOctober 1, 2020
Certification dateOctober 1, 2020
Mailing address9200 W Wisconsin Ave, Neoplastic Diseases Froedtert East Clinic Bldg, Milwaukee, WI 53226-3522

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice The Medical College Of Wisconsin Inc — 2093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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