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

Dr. Gregory Mark Gerrish, MD

Individual provider Surgery Physician · NPI 1992097703

Dr. Gregory Mark Gerrish, MD is a General Surgery in Watertown, South Dakota. Graduated from Sanford School of Medicine of University of South Dakota in 2011, 15 years ago. Practices with Prairie Lakes Health Care System Inc, a 112-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
15
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
SD
In the registry since
2011
Specialties on file
2
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

401 9th Ave NW Prairie Lakes Hospital
Watertown, SD 57201-1623
Phone: (605) 882-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 10080 (SD)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1992097703
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2011
Last updated in NPPESAugust 17, 2016
Mailing addressPo Box 1210, Watertown, SD 57201-6210

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2011 (15 years in practice)
Group practice Prairie Lakes Health Care System Inc — 112 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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