Dr. Lewis Sierra MD

Internal Medicine Physicians in Fond du Lac, WI

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Dr. Sierra has been compared 14 times

Dr. Lewis Sierra specializes in internal medicine, emergency medicine in Fond du Lac, Wisconsin.

Dr. Lewis Sierra has been compared 14 times. Details of Dr. Sierra's experience as an MD and his hospital affiliation are available on your free doctor report.


Primary Location for Dr. Sierra

Dr. Lewis Sierra
145 N Main St
Fond du Lac, WI 54935

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 Board Certification, Specialty and Expertise

Dr. Lewis Sierra has been identified as specializing in Internal Medicine and Emergency Medicine.

Accepted Insurance

Insurance plans and networks accepted by a doctor are not necessarily universal across all locations at which the doctor practices. This can be affected by many factors such as different group practices, hospital affiliations and working arrangements at those locations. Checking that the doctor you are visiting and the facility they are at are in-network providers for your insurance plan can save you money and headaches later from surprise medical bills.

Dr. Lewis Sierra accepts the following plans at 145 N Main St, Fond du Lac, WI

  • Aetna
  • Multiplan

See additional insurance networks accepted by Dr. Sierra

 Hospital Affiliation

A hospital affiliation covers any doctor who has an affiliation, association or admitting privilege with a hospital. A doctor's particular affiliation to a specific hospital can translate to the overall quality of that provider.

Dr. Sierra is affiliated with 1 hospital:

Saint Agnes Hospital
430 E Division St
Fond du Lac, Wisconsin


Patients may also know Dr. Lewis Sierra MD as:

  • Internal Medicine, Psychiatry, Sleep Medicine

    Transitional Care Unit, 430 E Division St, Fond du Lac, WI 54935

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  • Gastroenterology, Internal Medicine

    Fond du Lac Regional Clinic, 420 E Division St, Fond du Lac, WI 54935

    • General Info
  • Internal Medicine

    Fond du Lac Regional Clinic, 420 E Division St, Fond du Lac, WI 54935

    • General Info
  • Internal Medicine
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    Aurora Advanced Healthcare, 12203 Corporate Pkwy, Mequon, WI 53092

    • General Info
  • Internal Medicine

    210 Wisconsin American Dr, Fond du Lac, WI 54937

    • General Info


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