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

John Friedewald, MD

Individual provider Nephrology Physician · NPI 1508801093

John Friedewald, MD is a Nephrology in Chicago, Illinois. Graduated from Columbia University College of Physicians and Surgeons in 1998, 28 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
28
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
IL
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

675 N Saint Clair St Galter 17-200
Chicago, IL 60611-5975
Phone: (312) 695-8900
Fax: (312) 695-9194
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 036113031 (IL)

Record details

NPI number1508801093
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 18, 2006
Last updated in NPPESJuly 6, 2009
Mailing address680 N Lake Shore Dr, Suite 1000, Chicago, IL 60611-4546

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 1998 (28 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations20 on file with Medicare

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