Summary

Dr. Mark Walshauser treats iron deficiency anemia, cholangiocarcinoma, and liver cancer as part of his oncology practice. He has practiced oncology for 20 years and is affiliated with HSHS Saint Elizabeths Hospital, HSHS Saint Josephs Hospital Highland, Sparta Community Hospital, Memorial Hospital Shiloh, HSHS Saint Josephs Hospital Breese, and HSHS Holy Family Hospital.

He completed his residency at St. Louis University School of Medicine and sees patients in O Fallon and Highland, Illinois, as well as Sparta, Illinois.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.1
  • 20 years of experience
  • speaks English
  • St Louis University School Of Medicine
  • 6 written reviews
  • 1 specialty
  • 8 areas of expertise
  • 6 hospital affiliations
  • 6 office locations
  • Male

Patients’ Perspective

  • Had a good bedside manner
  • Provided follow-up after the visit
  • Flexible scheduling

Office Locations

Dr. Mark Andrew Walshauser has 6 locations

Cancer Care Center Of Ofallon

321 Regency ParkO Fallon, IL 62269
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Cancer Care Specialists Of Illinois

12860 Troxler Ave Ste 135Highland, IL 62249
MonClosed
TueClosed
WedClosed
Thu8:00 am - 4:30 pm
FriClosed
SatClosed
SunClosed

Hshs Saint Josephs Hospital Highland

12866 Troxler AveHighland, IL 62249

Sparta Community Hospital

818 E Broadway StSparta, IL 62286

Hshs Saint Elizabeths Hospital

1 Saint Elizabeth BlvdO Fallon, IL 62269

Memorial Hospital Shiloh

1404 Cross StO Fallon, IL 62269

Compare with Similar Doctors

Dr. Mark Andrew Walshauser, MD
Justin Brian Schutte
Stephanie Anne Vollmer
Brandy Rene Boyle
Dr. Mark Andrew Walshauser, MDJustin Brian SchutteStephanie Anne VollmerBrandy Rene Boyle
OncologyNurse PractitionerNurse PractitionerNurse Practitioner
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.1 
0 
0 
0 
20 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English
O Fallon , ILSaint Louis , MOSaint Louis , MOSaint Louis , MO
Med School: ROSS UNIVERSITY SCHOOL OF MEDICINE
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Mark Andrew Walshauser

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Mark Andrew Walshauser has the following specialty

Specialty Expertise

Dr. Mark Andrew Walshauser has the following 8 areas of expertise

  • Blood Cancer
  • Bone Marrow Transplant
  • Chemotherapy
  • Hodgkin's Lymphoma
  • Leukemia
  • Lymphoma
  • Myelofibrosis
  • Myeloma

Certifications, License, & Education

20 Years Experience

Dr. Mark Andrew Walshauser holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at St Louis University School Of Medicine.

Medical School

Graduated from ROSS UNIVERSITY SCHOOL OF MEDICINE in 2007 and Ross University School Of Medicine in 2006.

NPI Number

Dr. Walshauser's NPI number is 1306020664.

Similar doctors

Frequently Asked Questions

Does Dr. Mark Walshauser accept virtual/telehealth appointments?
Dr. Mark Walshauser has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Mark Walshauser affiliated with?
Dr. Mark Walshauser is affiliated with Hshs Saint Elizabeths Hospital, Hshs Saint Josephs Hospital Highland, Sparta Community Hospital, Memorial Hospital Shiloh, Hshs Saint Josephs Hospital Breese, and HSHS HOLY FAMILY HOSPITAL.
Where is Dr. Mark Walshauser's office located?
Dr. Mark Walshauser's office is located at 321 Regency Park, O Fallon, IL, 62269.
Does Dr. Mark Walshauser accept my insurance?
You can see the insurance plans that Dr. Mark Walshauser accepts on their Vitals profile.
Is Dr. Mark Walshauser accepting new patients?
Dr. Mark Walshauser is accepting new patients on Vitals. View Dr. Mark Walshauser's profile on Vitals to make an appointment.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.