Marissa J Krzyzan, FNP - Medicare Nurse Practitioner in Buffalo, NY

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Marissa J Krzyzan, FNP is a medicare enrolled "Nurse Practitioner - Family" in Buffalo, New York. She graduated from nursing school in 2018 and has 6 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Buffalo-niagara Hospitalists Llc, Buffalo Emergency Associates Llp and her current practice location is 2950 Elmwood Ave, Buffalo, New York. You can reach out to her office (for appointments etc.) via phone at (716) 447-6100.

Marissa J Krzyzan is licensed to practice in New York (license number F347951-01) 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 1205598521.

Contact Information

Marissa J Krzyzan, FNP
2950 Elmwood Ave,
Buffalo, NY 14217-1390
(716) 447-6100
Not Available

Map and Direction




Provider's Profile

Full NameMarissa J Krzyzan
GenderFemale
SpecialityNurse Practitioner
Experience6 Years
Location2950 Elmwood Ave, Buffalo, New York
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:
  • Marissa J Krzyzan graduated from nursing school in 2018
  NPI Data:
  • NPI Number: 1205598521
  • Provider Enumeration Date: 10/13/2021
  • Last Update Date: 01/20/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 4284028861
  • Enrollment ID: I20220224000759

Medical Identifiers

Medical identifiers for Marissa J Krzyzan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205598521NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family F347951-01 (New York)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Buffalo-niagara Hospitalists Llc337578905030
Buffalo Emergency Associates Llp498150251539

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. Marissa J Krzyzan allows following entities to bill medicare on her behalf.
Entity NameBuffalo Emergency Associates Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508816521
PECOS PAC ID: 4981502515
Enrollment ID: O20031222000057
Entity NameBuffalo-niagara Hospitalists Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871830208
PECOS PAC ID: 3375789050
Enrollment ID: O20130425000195

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. Marissa J Krzyzan 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
Marissa J Krzyzan, FNP
2950 Elmwood Ave,
Buffalo, NY 14217-1390

Ph: (716) 447-6100		Marissa J Krzyzan, FNP
2950 Elmwood Ave,
Buffalo, NY 14217-1390

Ph: (716) 447-6100

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.