Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Eammon Grosek

Individual provider Internal Medicine Physician · NPI 1154855732

Eammon Grosek practises Internal Medicine in Marshfield, Wisconsin. Graduated from Sanford School of Medicine of University of South Dakota in 2016, 10 years ago. Practices with Monument Health Rapid City Hospital Inc, a 561-clinician group, 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
2017
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Practice location Address checks out

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone: (719) 649-0232
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 6523 (WI)

Record details

NPI number1154855732
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 20, 2017
Last updated in NPPESApril 20, 2017

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2016 (10 years in practice)
Group practice Monument Health Rapid City Hospital Inc — 561 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients445
Services billed 1,173 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Monument Health Rapid City Hospital Hospital · Rapid City, SD · listed as Monument Health Rapid City Hospital, Inc
  • Monument Health Sturgis Hospital Hospital · Sturgis, SD · listed as Monument Health Network, Inc
  • Monument Health Home Plus Home Health Home health agency · Rapid City, SD · listed as Monument Health Home Plus, LLC
  • Monument Health Home Plus Hospice Hospice · Rapid City, SD · listed as Monument Health Home Plus, LLC
  • Monument Health Spearfish Hospital Hospital · Spearfish, SD
  • Good Samaritan Soc-Home Health Of The Black Hills Home health agency · Rapid City, SD
  • Westhills Village Home Health Home health agency · Rapid City, SD
  • Westhills Village Health Care Facility Nursing home · Rapid City, SD

Colleagues at Monument Health Rapid City Hospital Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 561 clinicians in the practice; 12 are shown here.

Other providers in Marshfield