John F Merchlewitz, MD - Medicare Family Practice in Onalaska, WI

John F Merchlewitz, MD is a medicare enrolled "Family Medicine" physician in Onalaska, Wisconsin. He went to University Of Minnesota Medical School and graduated in 1990 and has 34 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Gundersen Lutheran Medical Center Inc and his current practice location is 3111 Gundersen Dr, Onalaska, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (608) 775-8630.

John F Merchlewitz is licensed to practice in Wisconsin (license number 34858) 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 1609886100.

Contact Information

John F Merchlewitz, MD
3111 Gundersen Dr,
Onalaska, WI 54650-8447
(608) 775-8630
Not Available

Map and Direction




Physician's Profile

Full NameJohn F Merchlewitz
GenderMale
SpecialityFamily Practice
Experience34 Years
Location3111 Gundersen Dr, Onalaska, 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:
  • John F Merchlewitz attended and graduated from University Of Minnesota Medical School in 1990
  NPI Data:
  • NPI Number: 1609886100
  • Provider Enumeration Date: 08/08/2006
  • Last Update Date: 11/06/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 3870674195
  • Enrollment ID: I20191113003142

Medical Identifiers

Medical identifiers for John F Merchlewitz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609886100NPI-NPPES
739222200MedicaidMN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 38261 (Minnesota)Secondary
207Q00000XFamily Medicine 34858 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Gundersen Lutheran Medical CenterLa crosse, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gundersen Lutheran Medical Center Inc2163331414789

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. John F Merchlewitz allows following entities to bill medicare on his behalf.
Entity NameGundersen Lutheran Medical Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376593442
PECOS PAC ID: 2163331414
Enrollment ID: O20130807000951

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. John F Merchlewitz 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
John F Merchlewitz, MD
1836 South Ave,
La Crosse, WI 54601-5429

Ph: (608) 782-7300
John F Merchlewitz, MD
3111 Gundersen Dr,
Onalaska, WI 54650-8447

Ph: (608) 775-8630

Reviews and Comments


Family Medicine Doctors in Onalaska, WI

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Markus A Eckstein,
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Alyssa Diane Polk, DO
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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.