Dr Oliver D Gilliam, MD - Medicare Internal Medicine in South Bend, IN

Dr Oliver D Gilliam, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in South Bend, Indiana. He graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Michiana Gastroenterology, Inc and his current practice location is 17501 Generations Dr, South Bend, Indiana. You can reach out to his office (for appointments etc.) via phone at (574) 234-0049.

Dr Oliver D Gilliam is licensed to practice in Indiana (license number 01035882A) 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 1497759765.

Contact Information

Dr Oliver D Gilliam, MD
17501 Generations Dr,
South Bend, IN 46635-1589
(574) 234-0049
(574) 251-2861

Map and Direction




Physician's Profile

Full NameDr Oliver D Gilliam
GenderMale
SpecialityInternal Medicine
Experience42 Years
Location17501 Generations Dr, South Bend, Indiana
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 Oliver D Gilliam graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1497759765
  • Provider Enumeration Date: 06/02/2005
  • Last Update Date: 01/21/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 9133226871
  • Enrollment ID: I20101101000835

Medical Identifiers

Medical identifiers for Dr Oliver D Gilliam such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1497759765NPI-NPPES
100090510MedicaidIN
2738533002OtherINCIGNA
000000084427OtherINANTHEM
4667992OtherINAETNA
100010837OtherINRAILROAD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 01035882A (Indiana)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Michiana Gastroenterology, Inc216352989213

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 Oliver D Gilliam allows following entities to bill medicare on his behalf.
Entity NameMichiana Gastroenterology, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821094525
PECOS PAC ID: 2163529892
Enrollment ID: O20070515000183

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 Oliver D Gilliam 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 Oliver D Gilliam, MD
17501 Generations Dr,
South Bend, IN 46635-1589

Ph: (574) 234-0049
Dr Oliver D Gilliam, MD
17501 Generations Dr,
South Bend, IN 46635-1589

Ph: (574) 234-0049

Reviews and Comments


Internal Medicine Doctors in South Bend, IN

Mayank Kumar Mittal, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 610 N Michigan St Ste 400, South Bend, IN 46601
Phone: 574-647-8120    Fax: 574-647-8111
Dr. Steven P. Crowell, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 211 N Eddy St, South Bend, IN 46617
Phone: 574-237-9340    Fax: 574-239-1474
Muhammad Shakil Aslam, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 610 N Michigan St Ste 400, South Bend, IN 46601
Phone: 574-647-8120    Fax: 574-647-8111
Monika Niemiec, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 615 N Michigan St, 1st Fl Hospitalist Ste, South Bend, IN 46601
Phone: 574-647-3050    Fax: 574-647-1094
Dr. Travis Weaver, D.O.
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 1815 E Ireland Rd, South Bend, IN 46614
Phone: 574-647-1700    Fax: 574-647-7572
Dr. Thomas P Barbour, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 211 N Eddy St, South Bend, IN 46617
Phone: 574-237-9340    Fax: 574-239-1474
Dr. Ahmed A Abdel-latief, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 211 N Eddy St, South Bend, IN 46617
Phone: 574-239-1433    Fax: 574-239-1438

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.