Quick answers
- Which hospitals does Gregory R. Larson work at?
- Medicare's official clinician data lists Gregory R. Larson at 1 hospital: Prairie Lakes Healthcare System, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory R. Larson see patients?
- Medicare's clinician data lists 2 practice locations, including Watertown, SD. Call before your visit to confirm the address.
- What is Gregory R. Larson's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory R. Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory R. Larson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Gregory R. Larson offer telehealth?
- Medicare's clinician data says Gregory R. Larson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory R. Larson?
- (605) 886-8482, as listed in official Medicare / NPI Registry data.
- What is Gregory R. Larson's NPI number?
- 1629036645. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory R. Larson works
Medicare's Facility Affiliation Data lists Gregory R. Larson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · CCN 430005
Practice locations
Addresses where Gregory R. Larson is enrolled with Medicare (CMS data updated 2026-10-02).
- 506 1st Ave SEWatertown, SD 57201 (605) 886‑8482
- 511 14th Ave NEWatertown, SD 57201 (605) 886‑8482
Group practices
Medicare enrollment lists Gregory R. Larson as a member of these groups (CMS data updated 2026-10-02).
- Prairie Lakes Health Care System Inc109 clinicians in the group
- Brown Clinic PLLP7 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Watertown
Clinicians with the same Medicare primary specialty in Watertown, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629036645 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians