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

Dr. Marcus A Crosby, MD

Individual provider Internal Medicine Physician · NPI 1689803579

Dr. Marcus A Crosby, MD is a Radiation Oncology in LA Crosse, Wisconsin. Graduated from Medical College of Wisconsin in 2009, 17 years ago. Practices with Gundersen Lutheran Medical Center Inc, a 896-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
17
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2009
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1836 S Ave
LA Crosse, WI 54601
Phone: (608) 782-7300
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 55365 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 55365 (WI)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1689803579
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2009
Last updated in NPPESAugust 2, 2018
Mailing address1836 South Ave, La Crosse, WI 54601-5429

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2009 (17 years in practice)
Group practice Gundersen Lutheran Medical Center Inc — 896 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in LA Crosse