Gregg Horstmeyer, D.D.S.
NPI 1245453893 · Dentist · Anderson, IN
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregg Horstmeyer, D.D.S. is a Dentist provider in Anderson, IN (NPI 1245453893).
Provider details
- NPI number
- 1245453893
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12008398A (IN)
Specialties & taxonomies
Dental Providers
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Penicillin V Potassium | 38 | 25 |
| Amoxicillin | 31 | 16 |
| Cephalexin | 31 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 25 | 12 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | — |
| Clindamycin Hcl | 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
- 2007-04-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregg Horstmeyer's NPI number?
- Gregg Horstmeyer's National Provider Identifier (NPI) is 1245453893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregg Horstmeyer's specialty?
- Gregg Horstmeyer is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Gregg Horstmeyer located?
- Gregg Horstmeyer's practice location on file with NPPES is 2038 Broadway St, Anderson, IN 46012-1603.
- What is Gregg Horstmeyer's phone number?
- The practice phone number listed in the NPPES registry for Gregg Horstmeyer is (765) 644-4343.
- Does Gregg Horstmeyer accept Medicare?
- Gregg Horstmeyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregg Horstmeyer's NPI active?
- Yes — Gregg Horstmeyer's NPI (1245453893) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.