John Horn, M.D.
NPI 1841239431 · Family Medicine Physician · Grove City, OH
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Horn, M.D. is a Family Medicine Physician provider in Grove City, OH (NPI 1841239431).
Provider details
- NPI number
- 1841239431
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35-071663 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
899 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 322 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 279 | $85 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 129 | $121 |
| Automated Urinalysis Test81003 | 45 | $2 |
| Administration of Influenza Virus VaccineG0008 | 44 | $30 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 165 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 749 | 224 |
| Amlodipine Besylate | 437 | 132 |
| Levothyroxine Sodium | 409 | 112 |
| Pantoprazole Sodium | 367 | 96 |
| Metoprolol Succinate | 365 | 100 |
| Lisinopril | 337 | 92 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2022-02-23
- Certified
- 2022-02-23
Frequently asked questions
- What is John Horn's NPI number?
- John Horn's National Provider Identifier (NPI) is 1841239431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Horn's specialty?
- John Horn is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Horn located?
- John Horn's practice location on file with NPPES is 6024 Hoover Rd, Grove City, OH 43123-8133.
- What is John Horn's phone number?
- The practice phone number listed in the NPPES registry for John Horn is (614) 875-8949.
- Does John Horn accept Medicare?
- John Horn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Horn's NPI active?
- Yes — John Horn's NPI (1841239431) is active in the NPPES registry as of the last update on 2022-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.