Maria T Rivera, MD - Medicare Gastroenterology in Milwaukee, WI

Maria T Rivera, MD is a medicare enrolled "Pediatrics - Pediatric Gastroenterology" physician in Milwaukee, Wisconsin. She graduated from medical school in 1990 and has 36 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Gi Associates Llc and her current practice location is 2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, Wisconsin. You can reach out to her office (for appointments etc.) via phone at (414) 908-6500.

Maria T Rivera is licensed to practice in Wisconsin (license number 36361-20) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1417924192.

Contact Information

Maria T Rivera, MD
2801 W Kinnickinnic River Pkwy Ste 1080,
Milwaukee, WI 53215-3689
(414) 908-6500
(414) 908-6510

Map and Direction




Physician's Profile

Full NameMaria T Rivera
GenderFemale
SpecialityGastroenterology
Experience36 Years
Location2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, Wisconsin
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Maria T Rivera graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1417924192
  • Provider Enumeration Date: 03/02/2006
  • Last Update Date: 01/26/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 1658808696
  • Enrollment ID: I20250102002182

Medical Identifiers

Medical identifiers for Maria T Rivera such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417924192NPI-NPPES
32290400MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics 36361-20 (Wisconsin)Secondary
2080P0206XPediatrics - Pediatric Gastroenterology 36361-20 (Wisconsin)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gi Associates Llc610373856242

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. Maria T Rivera allows following entities to bill medicare on her behalf.
Entity NameGi Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801863501
PECOS PAC ID: 6103738562
Enrollment ID: O20031104000195
Entity NameGastroenterology Consultants Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730608324
PECOS PAC ID: 5092890079
Enrollment ID: O20171101000018

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. Maria T Rivera 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
Maria T Rivera, MD
2801 W Kinnickinnic River Pkwy Ste 1080,
Milwaukee, WI 53215-3689

Ph: (414) 908-6500
Maria T Rivera, MD
2801 W Kinnickinnic River Pkwy Ste 1080,
Milwaukee, WI 53215-3689

Ph: (414) 908-6500

Reviews and Comments


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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.