Clay O Demattei I, MD - Medicare General Surgery in Marion, IL

Clay O Demattei I, MD is a medicare enrolled "Surgery" physician in Marion, Illinois. He went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 1981 and has 43 years of diverse experience with area of expertise as General Surgery. His current practice location is 3402 Office Park Dr., Marion, Illinois. You can reach out to his office (for appointments etc.) via phone at (618) 993-3221.

Clay O Demattei I is licensed to practice in Illinois (license number 036072552) 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 1881621910.

Contact Information

Clay O Demattei I, MD
3402 Office Park Dr.,
Marion, IL 62959
(618) 993-3221
Not Available

Map and Direction




Physician's Profile

Full NameClay O Demattei I
GenderMale
SpecialityGeneral Surgery
Experience43 Years
Location3402 Office Park Dr., Marion, 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:
  • Clay O Demattei I attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 1981
  NPI Data:
  • NPI Number: 1881621910
  • Provider Enumeration Date: 06/26/2006
  • Last Update Date: 01/05/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2365413929
  • Enrollment ID: I20060823000454

Medical Identifiers

Medical identifiers for Clay O Demattei I such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881621910NPI-NPPES
036072552OtherILSTATE LICENSE NUMBER
036072552MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery 036072552 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Heartland Regional Medical CenterMarion, ILHospital

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. Clay O Demattei I allows following entities to bill medicare on his behalf.
Entity NameHeartland Surgery Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336172766
PECOS PAC ID: 7810991148
Enrollment ID: O20060829000315
Entity NameMarion Diagnostic Center Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366543084
PECOS PAC ID: 0749289833
Enrollment ID: O20061219000431

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. Clay O Demattei I 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
Clay O Demattei I, MD
3402 Office Park Dr.,
Marion, IL 62959

Ph: (618) 993-3221
Clay O Demattei I, MD
3402 Office Park Dr.,
Marion, IL 62959

Ph: (618) 993-3221

Reviews and Comments


Surgery Doctors in Marion, IL

Dr. Rama R Iyengar, M.D
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Dr. James V Robelen, M.D.
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Dr. Charles Robert Voss, M.D.
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Jose Veizaga Mendez, MD
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Phone: 618-997-5311    
Dr. Mohammad Abdul Jabbar, MD
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Medicare: Medicare Enrolled
Practice Location: 2401 W Main St, Marion, IL 62959
Phone: 618-997-5311    Fax: 618-998-5696
Qiong Qiu, M.D.
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Medicare: Medicare Enrolled
Practice Location: 3333 W Deyoung St, Marion, IL 62959
Phone: 618-998-7155    Fax: 618-998-7285

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.