Mary Kay Larson, APN - Medicare Nurse Practitioner in Warrenville, IL

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Mary Kay Larson, APN is a medicare enrolled "Nurse Practitioner" in Warrenville, Illinois. Her current practice location is 4405 Weaver Pkwy, Warrenville, Illinois. You can reach out to her office (for appointments etc.) via phone at (630) 352-5450.

Mary Kay Larson is licensed to practice in Illinois (license number 209006678) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1124293691.

Contact Information

Mary Kay Larson, APN
4405 Weaver Pkwy,
Warrenville, IL 60555-3269
(630) 352-5450
(630) 352-5499

Map and Direction




Provider's Profile

Full NameMary Kay Larson
GenderFemale
SpecialityNurse Practitioner
Location4405 Weaver Pkwy, Warrenville, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1124293691
  • Provider Enumeration Date: 04/25/2008
  • Last Update Date: 04/22/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 2769534221
  • Enrollment ID: I20090714000296

Medical Identifiers

Medical identifiers for Mary Kay Larson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124293691NPI-NPPES
206147214OtherILMEDICARE PTAN (INDIVIDUAL)

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner 209006678 (Illinois)Primary

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 Kay Larson allows following entities to bill medicare on her behalf.
Entity NameCentral Dupage Physician Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033149844
PECOS PAC ID: 5890696231
Enrollment ID: O20040303000601
Entity NameVpa Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174925663
PECOS PAC ID: 9234041948
Enrollment ID: O20040312001189
Entity NameMd @ Home Illinois, Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568758415
PECOS PAC ID: 7810167830
Enrollment ID: O20110831000340

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 Kay Larson 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 Kay Larson, APN
4405 Weaver Pkwy,
Warrenville, IL 60555-3269

Ph: (630) 352-5450		Mary Kay Larson, APN
4405 Weaver Pkwy,
Warrenville, IL 60555-3269

Ph: (630) 352-5450

Reviews and Comments


Nurse Practitioner Nurses in Warrenville, IL

Carlene Porter, APN.
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 4405 Weaver Pkwy, Warrenville, IL 60555
Phone: 630-352-5300    Fax: 630-352-5499
Laura Minarich,
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 28201 Diehl Rd, Warrenville, IL 60555
Phone: 360-657-5555    
Carrie A Feid, APN, CNP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 4405 Weaver Pkwy, Warrenville, IL 60555
Phone: 630-352-5450    Fax: 630-352-5320
Mrs. Erica Souders, FNP-BC, APN
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 28201 Diehl Rd, Warrenville, IL 60555
Phone: 708-427-5765    
Mr. Robert Dennis Stalley, APN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 4405 Weaver Pkwy, Warrenville, IL 60555
Phone: 630-938-8850    Fax: 630-938-8849
Jacqueline Rose Schmidt, MSN, APN, AGPCNP-BC
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 4405 Weaver Pkwy, Warrenville, IL 60555
Phone: 630-352-5450    Fax: 630-352-5499

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.