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

Gregory R. Larson, MD

Individual provider Family Medicine Physician · NPI 1629036645

Gregory R. Larson, MD is a Family Practice in Watertown, South Dakota. Graduated from Sanford School of Medicine of University of South Dakota in 1990, 36 years ago. Practices with Brown Clinic PLLP, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in South Dakota.

Years since qualifying
36
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
SD
In the registry since
2006
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

511 14th Ave NE
Watertown, SD 57201-6811
Phone: (605) 886-8482
Fax: (605) 884-4300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 3698 (SD)

Record details

NPI number1629036645
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2006
Last updated in NPPESMay 17, 2022
Certification dateMay 17, 2022
Mailing address506 1st Ave Se, Watertown, SD 57201-4402

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 1990 (36 years in practice)
Group practice Brown Clinic Pllp — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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