Thomas Groeger, MD
NPI 1942203419 · Family Medicine Physician · Deadwood, SD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Groeger, MD is a Family Medicine Physician provider in Deadwood, SD (NPI 1942203419).
Provider details
- NPI number
- 1942203419
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2775 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 84 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 199 | 51 |
| Losartan Potassium | 161 | 37 |
| Lisinopril | 156 | 39 |
| Levothyroxine Sodium | 135 | 33 |
| Omeprazole | 117 | 32 |
| Metformin Hcl | 107 | 29 |
| Simvastatin | 103 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2013-02-05
Frequently asked questions
- What is Thomas Groeger's NPI number?
- Thomas Groeger's National Provider Identifier (NPI) is 1942203419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Groeger's specialty?
- Thomas Groeger is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Groeger located?
- Thomas Groeger's practice location on file with NPPES is 71 Charles St, Deadwood, SD 57732.
- What is Thomas Groeger's phone number?
- The practice phone number listed in the NPPES registry for Thomas Groeger is (605) 717-6431.
- Does Thomas Groeger accept Medicare?
- Thomas Groeger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Groeger's NPI active?
- Yes — Thomas Groeger's NPI (1942203419) is active in the NPPES registry as of the last update on 2013-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.