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

Mark Daniel Larson, MD

Individual provider Glaucoma Specialist (Ophthalmology) Physician · NPI 1831651868

Mark Daniel Larson, MD is an Ophthalmology in Greenfield, Wisconsin. Graduated from Sanford School of Medicine of University of South Dakota in 2019, 7 years ago. Practices with Ophthalmology Associates S C, a 9-clinician group and accepts Medicare assignment. Licensed in Minnesota and Wisconsin.

Years since qualifying
7
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
MN, WI
In the registry since
2019
Specialties on file
2
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

4600 W Loomis Rd Ste 310
Greenfield, WI 53220-4858
Phone: (414) 281-0424
Fax: (414) 281-0959
Show map & directions

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

Specialties & licences

Glaucoma Specialist (Ophthalmology) Physician (primary) Taxonomy 207WX0009X · Licence 84144-20 (WI)
Ophthalmology Physician Taxonomy 207W00000X · Licence 73841 (MN)

Record details

NPI number1831651868
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2019
Last updated in NPPESSeptember 10, 2024
Certification dateSeptember 10, 2024
Mailing address4600 W Loomis Rd Ste 310, Greenfield, WI 53220-4858

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2019 (7 years in practice)
Group practice Ophthalmology Associates S C — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount