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

Mark P Ridder, MD

Individual provider Infectious Disease Physician · NPI 1821542739

Mark P Ridder, MD is an Infectious Disease in Marshfield, Wisconsin. Graduated from Sanford School of Medicine of University of South Dakota in 2016, 10 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
10
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
WI
In the registry since
2016
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

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone: (715) 387-5511
Show map & directions

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

Additional practice locations (1)

  • M120 Highway 97, Marshfield, WI 54449 — (715) 502-5575

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 68148 (WI)

Record details

NPI number1821542739
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 9, 2016
Last updated in NPPESDecember 12, 2022
Certification dateDecember 12, 2022
Mailing address1000 N Oak Ave, Marshfield, WI 54449-5703

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2016 (10 years in practice)
Group practice McHs Hospitals Inc — 1194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations10 on file with Medicare

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