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

Somsak Tanawattanacharoen, MD

Individual provider Internal Medicine Physician · NPI 1851487888

Somsak Tanawattanacharoen, MD practises Nephrology in Eau Claire, Wisconsin. Qualified in 1987, 39 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
39
Licensed in
WI
In the registry since
2006
Specialties on file
2
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

2116 Craig Rd
Eau Claire, WI 54701-6149
Phone: (715) 858-4500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 42822 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 42822 (WI)

Record details

NPI number1851487888
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESJuly 7, 2023
Certification dateJuly 7, 2023

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice McHs Hospitals Inc — 1194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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 patients320
Services billed 1,210 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

  • Marshfield Medical Center - Rice Lake Hospital · Rice Lake, WI · listed as Lakeview Medical Center Inc of Rice Lake
  • DaVita Lake Hallie Dialysis Dialysis facility · Lake Hallie, WI · listed as Total Renal Care Inc
  • DaVita Rice Lake Dialysis facility · Rice Lake, WI · listed as Total Renal Care Inc
  • Marshfield Medical Center Hospital · Marshfield, WI
  • Marshfield Medical Center - Eau Claire Hospital · Eau Claire, WI
  • Marshfield Medical Center - Ladysmith Hospital · Ladysmith, WI

Colleagues at Mchs Hospitals Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1194 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire