John William Frey, DO - Medicare Internal Medicine in La Crosse, WI

John William Frey, DO is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in La Crosse, Wisconsin. His current practice location is 700 West Ave South, La Crosse, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (608) 785-0940.

John William Frey is licensed to practice in Wisconsin (license number 81144) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1538600754.

Contact Information

John William Frey, DO
700 West Ave South,
La Crosse, WI 54601-8806
(608) 785-0940
Not Available



Physician's Profile

Full NameJohn William Frey
GenderMale
SpecialityInternal Medicine - Pulmonary Disease
Location700 West Ave South, La Crosse, Wisconsin
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1538600754
  • Provider Enumeration Date: 03/20/2017
  • Last Update Date: 09/08/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 4688946247
  • Enrollment ID: I20230530001917

Medical Identifiers

Medical identifiers for John William Frey such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538600754NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RP1001XInternal Medicine - Pulmonary Disease 94-09289 (Kansas)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 81144 (Wisconsin)Primary
207R00000XInternal Medicine 94-09289 (Kansas)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 81144 (Wisconsin)Secondary

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 William Frey allows following entities to bill medicare on his behalf.
Entity NameMayo Clinic Health System-franciscan Medical Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629056049
PECOS PAC ID: 0345152443
Enrollment ID: O20031110000684

News Archive

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Vitamin D might modify damaging effects of smoking on lung function

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› Verified 9 days ago

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 William Frey 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 William Frey, DO
200 1st St Sw,
Rochester, MN 55905-0001

Ph: (507) 284-2511
John William Frey, DO
700 West Ave South,
La Crosse, WI 54601-8806

Ph: (608) 785-0940

News Archive

Researchers win 2019 AAAS Newcomb Cleveland Prize for malaria-fighting technology

A team of nine researchers based in the United States and Burkina Faso will receive the 2019 Newcomb Cleveland Prize, presented by the American Association for the Advancement of Science, for the development of a promising tool in the global fight against malaria and other diseases transmitted by mosquitoes, including dengue and Zika.

Epilepsy may not increase risk of committing violent crime

Despite current public and expert opinion to the contrary, having the neurological condition epilepsy is not directly associated with an increased risk of committing violent crime.

Researchers develop new method to produce artificial membranes using nanoscaled tip

Researchers around Dr. Michael Hirtz from Karlsruhe Institute of Technology and Dr. Aravind Vijayaraghavan from the University of Manchester have developed a new method to produce artificial membranes: Using a nanoscaled tip, they write tailored patches of phospholipid membrane onto a graphene substrate.

Vitamin D might modify damaging effects of smoking on lung function

Vitamin D deficiency is associated with worse lung function and more rapid decline in lung function over time in smokers, suggesting that vitamin D may have a protective effect against the effects of smoking on lung function, according to a new study from researchers in Boston.

Scientists identify new biomarker for identifying individuals at risk of depression

Chronic pain, or inflammation, is believed to be one of the major factors in the onset of major depressive disorder.

Read more News

› Verified 9 days ago


Internal Medicine Doctors in La Crosse, WI

Mary K Frohnauer, MD
Pulmonary Disease
Medicare: Not Enrolled in Medicare
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-775-2021    
Derek A Hupp,
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    
Padmavathi Mali, M.D.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    
Emily Catherine Dolan, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    
Blake Donald Jordan, DO
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    
Adie D Harbin Iii, MD
Pulmonary Disease
Medicare: Not Enrolled in Medicare
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    
Gregory M Knorr, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1836 South Ave, La Crosse, WI 54601
Phone: 608-782-7300    

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