Mark T Duffy, MD - Medicare Ophthalmology in Green Bay, WI

Mark T Duffy, MD is a medicare enrolled "Ophthalmology - Ophthalmic Plastic And Reconstructive Surgery" physician in Green Bay, Wisconsin. He went to University Of Illinois College Of Med (chi/peor/rock/chm-urb) and graduated in 1992 and has 32 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Baycare Clinic Llp and his current practice location is 2253 W Mason St, Green Bay, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (920) 327-7000.

Mark T Duffy is licensed to practice in Wisconsin (license number 47208) 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 1235167537.

Contact Information

Mark T Duffy, MD
2253 W Mason St,
Green Bay, WI 54303-4706
(920) 327-7000
(920) 327-7005



Physician's Profile

Full NameMark T Duffy
GenderMale
SpecialityOphthalmology
Experience32 Years
Location2253 W Mason St, Green Bay, Wisconsin
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:
  • Mark T Duffy attended and graduated from University Of Illinois College Of Med (chi/peor/rock/chm-urb) in 1992
  NPI Data:
  • NPI Number: 1235167537
  • Provider Enumeration Date: 06/28/2006
  • Last Update Date: 04/09/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3678549607
  • Enrollment ID: I20040909001085

Medical Identifiers

Medical identifiers for Mark T Duffy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1235167537NPI-NPPES
34564300MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207WX0200XOphthalmology - Ophthalmic Plastic And Reconstructive Surgery 47208 (Wisconsin)Primary
207W00000XOphthalmology 47208 (Wisconsin)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Aurora Baycare Medical CtrGreen bay, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Baycare Clinic Llp4385554328185

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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. Mark T Duffy allows following entities to bill medicare on his behalf.
Entity NameBaycare Clinic Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588609648
PECOS PAC ID: 4385554328
Enrollment ID: O20031105000087

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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. Mark T Duffy 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
Mark T Duffy, MD
1035 Kepler Dr,
Green Bay, WI 54311-8320

Ph: (920) 490-9046
Mark T Duffy, MD
2253 W Mason St,
Green Bay, WI 54303-4706

Ph: (920) 327-7000

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Ophthalmology Doctors in Green Bay, WI

Larry A Meyer, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 2253 W Mason St, Ste 100, Green Bay, WI 54303
Phone: 920-327-7000    Fax: 920-327-7005
Dr. William Joseph Reynders, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 2253 W Mason St, Green Bay, WI 54303
Phone: 920-327-7000    Fax: 920-327-7005
Kevin P Wienkers, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 2253 W Mason St, Green Bay, WI 54303
Phone: 920-327-7000    Fax: 920-327-7005
Karl Lee Schwiesow, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 1087 W Mason Street, Green Bay, WI 54303
Phone: 920-499-3102    Fax: 920-499-9636
Kurt August Schwiesow, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 1087 W Mason Street, Green Bay, WI 54303
Phone: 920-499-3102    Fax: 920-499-9636
Dr. Anatol J Stankevych, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 923 Eliza St, Green Bay, WI 54301
Phone: 920-965-4800    Fax: 920-431-7024

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