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

Dr. James Benjamin Grossweiner, MD

Individual provider Dermatology Physician · NPI 1437114907

Dr. James Benjamin Grossweiner, MD is a Dermatology in Naperville, Illinois. Graduated from R Franklin University of Med & SCI/Chicago Medical School in 1985, 41 years ago. Accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
41
Trained at
R Franklin University of Med & SCI/Chicago Medical School
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

1220 Hobson Rd Ste 116
Naperville, IL 60540-8137
Phone: (630) 355-6660
Fax: (630) 527-2856
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 036-074040 (IL)

Record details

NPI number1437114907
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 19, 2006
Last updated in NPPESJuly 18, 2022
Certification dateJuly 18, 2022
Mailing address1220 Hobson Rd Ste 116, Naperville, IL 60540-8137

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolR FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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