Mary J Oyen, MD - Medicare Ophthalmology in Platteville, WI

Mary J Oyen, MD is a medicare enrolled "Ophthalmology" physician in Platteville, Wisconsin. She went to University Of Wisconsin School Of Medicine and graduated in 1993 and has 31 years of diverse experience with area of expertise as Ophthalmology. She is a member of the group practice Southwest Health Center Inc and her current practice location is 1450 Eastside Rd, Ste 120, Platteville, Wisconsin. You can reach out to her office (for appointments etc.) via phone at (608) 342-2020.

Mary J Oyen is licensed to practice in Wisconsin (license number 35622-020) 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 1770536161.

Contact Information

Mary J Oyen, MD
1450 Eastside Rd, Ste 120,
Platteville, WI 53818-9800
(608) 342-2020
(608) 342-6330

Map and Direction




Physician's Profile

Full NameMary J Oyen
GenderFemale
SpecialityOphthalmology
Experience31 Years
Location1450 Eastside Rd, Platteville, 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:
  • Mary J Oyen attended and graduated from University Of Wisconsin School Of Medicine in 1993
  NPI Data:
  • NPI Number: 1770536161
  • Provider Enumeration Date: 05/18/2006
  • Last Update Date: 11/27/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 0749175305
  • Enrollment ID: I20040220000996

Medical Identifiers

Medical identifiers for Mary J Oyen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770536161NPI-NPPES
1024301OtherWIPHYSICIANS PLUS
6439OtherWIDEAN HEALTH INSURANCE
32460100MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 35622-020 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Southwest Health CenterPlatteville, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Southwest Health Center Inc307242777274

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. Mary J Oyen allows following entities to bill medicare on her behalf.
Entity NameSouthwest Health Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831279793
PECOS PAC ID: 3072427772
Enrollment ID: O20031117000839

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. Mary J Oyen 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
Mary J Oyen, MD
1450 Eastside Rd,
Platteville, WI 53818-9800

Ph: (608) 342-2020
Mary J Oyen, MD
1450 Eastside Rd, Ste 120,
Platteville, WI 53818-9800

Ph: (608) 342-2020

Reviews and Comments


Ophthalmology Doctors in Platteville, WI


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.