Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Mark Gerrish, M.D.

Surgery Physician in Watertown, SD · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1992097703

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Mark Gerrish

Credential M.D.

Sex Male

Practice address 401 9th Ave. Nw, Prairie Lakes Hospital, Watertown, SD, 57201

Phone (605) 882-7000

Enumeration date May 12, 2011

Last updated in NPPES Aug 17, 2016

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 10080 (SD) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1992097703 active?

Yes, as of the latest NPPES snapshot, NPI 1992097703 is active (record last updated 2016-08-17).

How do I verify Gregory Gerrish's NPI record?

Cross-check NPI 1992097703 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Steven Miller Cardiovascular Disease Physician · Watertown, SD NPI 1669477287 Ferdinand Addo Hematology & Oncology Physician · Watertown, SD NPI 1760461388 Michael Fenster Interventional Cardiology Physician · Watertown, SD NPI 1720068471 James Bear Emergency Medicine Physician · Watertown, SD NPI 1679543037 Kristie Goens Family Nurse Practitioner · Watertown, SD NPI 1245204957 Edward Wegner Anatomic Pathology & Clinical Pathology Physician · Watertown, SD NPI 1437117173 Bipinkumar Amin Hematology & Oncology Physician · Watertown, SD NPI 1568415628 Elliott Filler Emergency Medicine Physician · Watertown, SD NPI 1043263023

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-17.