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Mark A Nelson, MD

Mark A Nelson, MD

Gastroenterology
(219) 872-6566
Franciscan Physician Network
Languages Spoken
English

The tau symbol represents physicians who are employees of the Franciscan Physician Network, a division of Franciscan Alliance, Inc. All other physicians are independent members of the Medical Staff who choose to practice at a Franciscan Health hospital.

Request An Appointment

accepting new patients

Provider Ratings

4.8 out of 5 (62 ratings)

Locations

or Use My Current Location

Franciscan Physician Network Woodland Health Center

8865 West 400 North
Michigan City, IN 46360

Franciscan Physician Network Woodland Health Center
View Details
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Franciscan Physician Network LaPorte Health Center

900 I Street
LaPorte, IN 46350

View hours
Monday
7:00am - 5:00pm
Tuesday
7:00am - 5:00pm
Wednesday
7:00am - 5:00pm
Thursday
7:00am - 5:00pm
Friday
7:00am - 5:00pm
Franciscan Physician Network LaPorte Health Center
219-575-6060 View Details
Request An Appointment

Franciscan Health Michigan City

3500 Franciscan Way
Michigan City, IN 46360

View hours
Sunday
Open 24 hours
Monday
Open 24 hours
Tuesday
Open 24 hours
Wednesday
Open 24 hours
Thursday
Open 24 hours
Friday
Open 24 hours
Saturday
Open 24 hours
Franciscan Health Michigan City
219-879-8511 View Details

About Me

Education

Medical School:
University of Illinois College of Medicine

Board Certifications

American Board of Internal Medicine

Gastroenterology, American Board of Internal Medicine

Insurances Accepted

  • Aetna
  • Anthem
  • Anthem HIP
  • Anthem Medicaid
  • CareSource
  • Cigna Health Plans
  • Cofinity
  • Community Health Alliance
  • Department of Labor
  • Devoted Health
  • Healthcare Finest Network
  • Humana
  • Lutheran Preferred
  • Managed Health Services
  • Managed Health Services MarketPlace
  • Medicaid IL
  • Medicaid IN
  • Medicare IN
  • Medicare Rail Road
  • MultiPlan/PHCS
  • Preferred Network Access
  • Sagamore
  • SIHO
  • Tricare/Humana Military
  • United Health Care
  • United Health Care Medicaid
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Provider Ratings

4.8 out of 5

(62 ratings)

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

31 Reviews

03/12/2026

Kind and attentive to patients symptoms. Very easy to talk with.

03/09/2026

I have recommended Doctor Nelson to a few of my friends. I have confidence that he will work with them on their health issues as he has helped me with mine.

03/04/2026

Dr.Nelson is a good doctor that cares about his patients.

02/14/2026

He’s been my doctor 25+ years. He is a great caregiver.

02/03/2026

I liked him a lot.

12/17/2025

He did all he could to find medicine compliant with my insurance regulations without compromising my health.

12/13/2025

So kind, thorough and very patient

12/02/2025

Great

12/02/2025

He is very knowledgeable and friendly.

12/01/2025

Direct informative answers questions

11/26/2025

Great doctor.

11/04/2025

He listens and knows me. He understands my ups and downs.

08/27/2025

Very competent in his explanations and very good at his diagnosis.

08/25/2025

Straight to the point

08/17/2025

I had a response from him in My Chart very quickly after my cat scan. thank goodness all was normal.

08/13/2025

He was good at his job and listening. He seemed to diagnose well and know the next steps of what needs to be done.

08/10/2025

Dr. Nelson is great. Takes time for you and makes sure he covers all the bases. Kind, personable and through.

08/10/2025

He saved my life! A big Super #10.

08/05/2025

Dr Nelson always explains things thoroughly and answers all of questions. He’s been my doctor for many years and I trust him

06/30/2025

Listens to his patients and very kind

06/17/2025

Very professional

06/14/2025

Yes

06/12/2025

A very special caring doctor

05/27/2025

Answered my questions so I could understand,took his time explaining the procedure.

05/25/2025

Very pleasant .

05/18/2025

He tells it like it is. No bs.

05/08/2025

he is very much in tone with my well being

04/10/2025

Thorough doctor that really listens.

04/05/2025

Probably a good "book" physician as many are, however I think that many at least in this state are far more concerned with mal practice.....than proactive practice, as is the case....at least with this initial visit

03/24/2025

Dr. Nelson listens very attentively to your concern. He shares professional knowledge regarding research in offering advice regarding moving forward with my condition.

03/23/2025

He was interested in what I had to say.
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Hospitals

(219) 872-6566