Dr Nathan Michael Larsen, MD - Medicare Emergency Medicine in Waupaca, WI

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Dr Nathan Michael Larsen, MD is a medicare enrolled "Emergency Medicine" physician in Waupaca, Wisconsin. He went to Medical College Of Wisconsin and graduated in 2004 and has 20 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Agnesian Healthcare Inc and his current practice location is 800 Riverside Dr, Waupaca, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (715) 258-1000.

Dr Nathan Michael Larsen is licensed to practice in Wisconsin (license number 48825-020) 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 1992887848.

Contact Information

Dr Nathan Michael Larsen, MD
800 Riverside Dr,
Waupaca, WI 54981-1943
(715) 258-1000
(715) 258-2000

Map and Direction




Physician's Profile

Full NameDr Nathan Michael Larsen
GenderMale
SpecialityEmergency Medicine
Experience20 Years
Location800 Riverside Dr, Waupaca, 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:
  • Dr Nathan Michael Larsen attended and graduated from Medical College Of Wisconsin in 2004
  NPI Data:
  • NPI Number: 1992887848
  • Provider Enumeration Date: 10/19/2006
  • Last Update Date: 11/17/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 4082713060
  • Enrollment ID: I20070618000165

Medical Identifiers

Medical identifiers for Dr Nathan Michael Larsen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992887848NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 48825-020 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Thedacare Medical Center-waupacaWaupaca, WIHospital
Ripon Medical CenterRipon, WIHospital
Thedacare Medical Center - New LondonNew london, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Agnesian Healthcare Inc1658289624335

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. Dr Nathan Michael Larsen allows following entities to bill medicare on his behalf.
Entity NameAgnesian Healthcare Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346228541
PECOS PAC ID: 1658289624
Enrollment ID: O20031104000263
Entity NameMarshfield Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952347981
PECOS PAC ID: 2264345206
Enrollment ID: O20031106000590
Entity NameThedacare Medical Center - Shawano, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548260839
PECOS PAC ID: 5890605836
Enrollment ID: O20031117000117
Entity NameThedacare Medical Center - Berlin Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760413777
PECOS PAC ID: 0446151666
Enrollment ID: O20040120000214
Entity NameThedacare Medical Center - New London, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538127220
PECOS PAC ID: 5698664480
Enrollment ID: O20040311000254
Entity NameMemorial Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346239373
PECOS PAC ID: 2365433224
Enrollment ID: O20040519001426
Entity NameThedacare Medical Center - Waupaca, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780782680
PECOS PAC ID: 3072504216
Enrollment ID: O20040524000645
Entity NameThedacare Medical Center - Wild Rose, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043263999
PECOS PAC ID: 6507840923
Enrollment ID: O20040615000235
Entity NameFlambeau Hospital, Inc.
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1700963048
PECOS PAC ID: 9032029871
Enrollment ID: O20070828000478
Entity NameMemorial Hospital Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1346239373
PECOS PAC ID: 2365433224
Enrollment ID: O20110526000807
Entity NameMchs Hospitals Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093221434
PECOS PAC ID: 5698071173
Enrollment ID: O20180208000096
Entity NameLakeview Medical Center Inc Of Rice Lake
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093201832
PECOS PAC ID: 6103737820
Enrollment ID: O20180817001484
Entity NameFlambeau Hospital, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194317966
PECOS PAC ID: 9032029871
Enrollment ID: O20210409000059

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. Dr Nathan Michael Larsen 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
Dr Nathan Michael Larsen, MD
800 Riverside Dr,
Waupaca, WI 54981-1943

Ph: (715) 258-1000		Dr Nathan Michael Larsen, MD
800 Riverside Dr,
Waupaca, WI 54981-1943

Ph: (715) 258-1000

Reviews and Comments


Emergency Medicine Doctors in Waupaca, WI

Dr. Logan Robert Gorges, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    Fax: 715-258-1042
Dr. Amy T Kenworthy, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    
Francesca L Detrana, DO
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    Fax: 715-258-1632
Dr. Spencer Wolf Greaves, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    
Dr. Matthew Paul Nelson, D.O.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    
Dr. Dennis D Ford, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1000    
Dr. Charles Conger, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 800 Riverside Dr, Waupaca, WI 54981
Phone: 715-258-1041    

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.