Cassandra Hartwig, NP - Medicare Nurse Practitioner in Waterloo, WI

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Cassandra Hartwig, NP is a medicare enrolled "Nurse Practitioner" in Waterloo, Wisconsin. She graduated from nursing school in 2016 and has 10 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Aspirus Rhinelander And Tomahawk Hospitals And Clinics Inc and her current practice location is 537 Mckay Way, Waterloo, Wisconsin. You can reach out to her office (for appointments etc.) via phone at (608) 206-4364.

Cassandra Hartwig is licensed to practice in Wisconsin (license number 7517) 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 1215476163.

Contact Information

Cassandra Hartwig, NP
537 Mckay Way,
Waterloo, WI 53594-1530
(608) 206-4364
Not Available

Map and Direction




Provider's Profile

Full NameCassandra Hartwig
GenderFemale
SpecialityNurse Practitioner
Experience10 Years
Location537 Mckay Way, Waterloo, 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:
  • Cassandra Hartwig graduated from nursing school in 2016
  NPI Data:
  • NPI Number: 1215476163
  • Provider Enumeration Date: 02/13/2017
  • Last Update Date: 06/23/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 3870877970
  • Enrollment ID: I20170309002447

Medical Identifiers

Medical identifiers for Cassandra Hartwig such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215476163NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner 7517 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ascension St Marys HospitalRhinelander, WIHospital
Howard Young Medical CenterWoodruff, WIHospital
Ascension Eagle River HospitalEagle river, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Aspirus Rhinelander And Tomahawk Hospitals And Clinics Inc9335059856343

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. Cassandra Hartwig allows following entities to bill medicare on her behalf.
Entity NameAspirus Rhinelander & Tomahawk Hospitals & Clinics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1144991340
PECOS PAC ID: 9335059856
Enrollment ID: O20031126000706
Entity NameHoward Young Medical Center Inc Of Woodruff Wisconsin
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184673352
PECOS PAC ID: 4183519606
Enrollment ID: O20040419000970

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. Cassandra Hartwig 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
Cassandra Hartwig, NP
537 Mckay Way,
Waterloo, WI 53594-1530

Ph: () -		Cassandra Hartwig, NP
537 Mckay Way,
Waterloo, WI 53594-1530

Ph: (608) 206-4364

Reviews and Comments


Nurse Practitioner Nurses in Waterloo, WI

Julee R Radtke, NP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 111 Anna St, Waterloo, WI 53594
Phone: 920-478-3776    Fax: 920-478-3979
Charles Behrens, NURSE PRACTITIONER
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 801 W Madison St, Waterloo, WI 53594
Phone: 920-390-7290    

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.