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

Brenda J Grass, MD

Individual provider Adolescent Medicine (Internal Medicine) Physician · NPI 1356332753

Brenda J Grass, MD is an Internal Medicine in Fond Du Lac, Wisconsin. Graduated from Medical College of Wisconsin in 1992, 34 years ago. Practices with Agnesian Healthcare Inc, a 390-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
34
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2005
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

420 E Division St
Fond Du Lac, WI 54935-4560
Phone: (920) 926-8615
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adolescent Medicine (Internal Medicine) Physician (primary) Taxonomy 207RA0000X · Licence 43233 (WI)

Record details

NPI number1356332753
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 3, 2005
Last updated in NPPESDecember 10, 2020
Certification dateDecember 10, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1992 (34 years in practice)
Group practice Agnesian Healthcare Inc — 390 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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