Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John M. Merfeld, MD

Individual provider Family Medicine Physician · NPI 1578550281

John M. Merfeld, MD is a Family Practice in LA Crosse, Wisconsin. Graduated from Medical College of Wisconsin in 1995, 31 years ago. Practices with Mayo Clinic Health System-Southwest Wisconsin Region Inc, a 552-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
31
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

815 10th St S
LA Crosse, WI 54601-4764
Phone: (608) 782-9760
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 800 West Ave S, La Crosse, WI 54601-8806 — (608) 784-6648

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 38073 (WI)

Record details

NPI number1578550281
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 29, 2005
Last updated in NPPESNovember 11, 2021
Certification dateNovember 11, 2021
Mailing address200 1st St Sw, Rochester, MN 55905-0002

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1995 (31 years in practice)
Group practice Mayo Clinic Health System-Southwest Wisconsin Region Inc — 552 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in LA Crosse