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

Efrain Sueldo, MD

Individual provider Internal Medicine Physician · NPI 1750389995

Efrain Sueldo, MD practises Internal Medicine in Eau Claire, Wisconsin. Qualified in 1986, 40 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group and accepts Medicare assignment. Licensed in Michigan and Wisconsin.

Years since qualifying
40
Licensed in
MI, WI
In the registry since
2005
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
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 37557 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301059151 (MI)

Record details

NPI number1750389995
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2005
Last updated in NPPESNovember 17, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice McHs Hospitals Inc — 1194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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

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 patients438
Services billed 891 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $95 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

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
  • Marshfield Medical Center Hospital · Marshfield, WI
  • Marshfield Medical Center - Eau Claire Hospital · Eau Claire, WI
  • Marshfield Medical Center - Ladysmith Hospital · Ladysmith, WI
  • Interim Healthcare Of Western Wisconsin Home health agency · Hudson, WI
  • St Croix Hospice Eau Claire Hospice · Eau Claire, 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