Douglas K Rex, MD - Medicare Gastroenterology in Indianapolis, IN

Douglas K Rex, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Indianapolis, Indiana. He went to Indiana University School Of Medicine and graduated in 1980 and has 44 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice University Medical Diagnostic Associates Inc and his current practice location is 550 University Blvd, Uh 4100, Indianapolis, Indiana. You can reach out to his office (for appointments etc.) via phone at (317) 278-8741.

Douglas K Rex is licensed to practice in Indiana (license number 01029838) 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 1164486643.

Contact Information

Douglas K Rex, MD
550 University Blvd, Uh 4100,
Indianapolis, IN 46202-5149
(317) 278-8741
Not Available

Map and Direction




Physician's Profile

Full NameDouglas K Rex
GenderMale
SpecialityGastroenterology
Experience44 Years
Location550 University Blvd, Indianapolis, 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:
  • Douglas K Rex attended and graduated from Indiana University School Of Medicine in 1980
  NPI Data:
  • NPI Number: 1164486643
  • Provider Enumeration Date: 04/13/2006
  • Last Update Date: 12/29/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 7719976471
  • Enrollment ID: I20040507001084

Medical Identifiers

Medical identifiers for Douglas K Rex such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164486643NPI-NPPES
100239400MedicaidIN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 01029838 (Indiana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Indiana University Health North HospitalCarmel, INHospital
Indiana University HealthIndianapolis, INHospital
Iu Health West HospitalAvon, INHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Medical Diagnostic Associates Inc3375446347274

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. Douglas K Rex allows following entities to bill medicare on his behalf.
Entity NameUniversity Medical Diagnostic Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861441537
PECOS PAC ID: 3375446347
Enrollment ID: O20040202000510

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. Douglas K Rex 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
Douglas K Rex, MD
250 N Shadeland Ave,
Indianapolis, IN 46219-4959

Ph: () -
Douglas K Rex, MD
550 University Blvd, Uh 4100,
Indianapolis, IN 46202-5149

Ph: (317) 278-8741

Reviews and Comments


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Steven T Hugenberg, M.D.
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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.