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

William D Timm, MD

Individual provider Infectious Disease Physician · NPI 1902856016

William D Timm, MD is an Infectious Disease in Brookfield, Wisconsin. Graduated from Medical College of Wisconsin in 1991, 35 years ago. Practices with Infectious Disease Specialists of SE Wi, SC, a 13-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
35
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

150 S Sunny Slope Rd Ste 136
Brookfield, WI 53005-4858
Phone: (262) 786-4550
Fax: (262) 786-4552
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1818 N Meade St, Appleton, WI 54911-3454 — (920) 831-1841

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 33843-020 (WI)

Record details

NPI number1902856016
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 11, 2006
Last updated in NPPESJanuary 16, 2025
Certification dateJanuary 16, 2025
Mailing address150 S Sunny Slope Rd, Suite 136, Brookfield, WI 53005-6461

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1991 (35 years in practice)
Group practice Infectious Disease Specialists Of Se Wi, Sc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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