Dr Mark T Klucka, DO - Medicare Gastroenterology in O Fallon, IL

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Dr Mark T Klucka, DO is a medicare enrolled "Internal Medicine - Gastroenterology" physician in O Fallon, Illinois. He graduated from medical school in 1983 and has 41 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Hshs Medical Group Inc and his current practice location is 3 Saint Elizabeth Blvd, O Fallon, Illinois. You can reach out to his office (for appointments etc.) via phone at (618) 641-5803.

Dr Mark T Klucka is licensed to practice in Illinois (license number 036.077227) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1801902432.

Contact Information

Dr Mark T Klucka, DO
3 Saint Elizabeth Blvd,
O Fallon, IL 62269
(618) 641-5803
Not Available

Map and Direction




Physician's Profile

Full NameDr Mark T Klucka
GenderMale
SpecialityGastroenterology
Experience41 Years
Location3 Saint Elizabeth Blvd, O Fallon, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mark T Klucka graduated from medical school in 1983
  NPI Data:
  • NPI Number: 1801902432
  • Provider Enumeration Date: 08/23/2006
  • Last Update Date: 08/22/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 3678608353
  • Enrollment ID: I20100319000401

Medical Identifiers

Medical identifiers for Dr Mark T Klucka such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801902432NPI-NPPES
036077227MedicaidIL
100013015OtherILRAILROAD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 036.077227 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hshs St Elizabeth's HospitalO fallon, ILHospital
St Josephs HospitalBreese, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hshs Medical Group Inc5092857821236

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Mark T Klucka allows following entities to bill medicare on his behalf.
Entity NameHshs Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962644807
PECOS PAC ID: 5092857821
Enrollment ID: O20100116000275
Entity NameMetro East Gastroenterology Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447590328
PECOS PAC ID: 8628218989
Enrollment ID: O20130709000751

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Mark T Klucka is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Mark T Klucka, DO
3 Saint Elizabeth Blvd,
O Fallon, IL 62269-1281

Ph: (618) 641-5803		Dr Mark T Klucka, DO
3 Saint Elizabeth Blvd,
O Fallon, IL 62269

Ph: (618) 641-5803

Reviews and Comments


Internal Medicine Doctors in O Fallon, IL

Thomas B. Cahill Jr., MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Regina Y Chiu, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Lori Beth Helmers, APRN
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Dr. Scott Benjamin Marrus, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Vinaya Mulkareddy, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 3 Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-769-0777
Isaac Tran, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1 Saint Elizabeth Blvd, O Fallon, IL 62269
Phone: 618-234-2120    
Atul Shah, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.