Theresa Person, M.D.
NPI 1689688921 · Family Medicine Physician · Vermillion, SD
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Person, M.D. is a Family Medicine Physician provider in Vermillion, SD (NPI 1689688921).
Provider details
- NPI number
- 1689688921
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 48727 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 24 | 24 |
| Prednisone | 22 | 22 |
| Ondansetronbrand: Ondansetron Odt | 14 | 14 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2008-11-21
Frequently asked questions
- What is Theresa Person's NPI number?
- Theresa Person's National Provider Identifier (NPI) is 1689688921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Person's specialty?
- Theresa Person is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Theresa Person located?
- Theresa Person's practice location on file with NPPES is 20 S Plum St, Vermillion, SD 57069-3346.
- What is Theresa Person's phone number?
- The practice phone number listed in the NPPES registry for Theresa Person is (605) 624-9111.
- Does Theresa Person accept Medicare?
- Theresa Person is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Person's NPI active?
- Yes — Theresa Person's NPI (1689688921) is active in the NPPES registry as of the last update on 2008-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.