John Farmer, M.D.
NPI 1891727640 · Internal Medicine Physician · Canton, MS
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Farmer, M.D. is a Internal Medicine Physician provider in Canton, MS (NPI 1891727640).
Provider details
- NPI number
- 1891727640
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 16951 (MS)
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
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 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 618 | 168 |
| Amlodipine Besylate | 555 | 157 |
| Metformin Hcl | 299 | 81 |
| Gabapentin | 169 | 53 |
| Omeprazole | 160 | 53 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 159 | 47 |
| Potassium Chloride |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2025-12-10
- Certified
- 2025-12-10
Frequently asked questions
- What is John Farmer's NPI number?
- John Farmer's National Provider Identifier (NPI) is 1891727640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Farmer's specialty?
- John Farmer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Farmer located?
- John Farmer's practice location on file with NPPES is 1668 W Peace St, Canton, MS 39046-5332.
- What is John Farmer's phone number?
- The practice phone number listed in the NPPES registry for John Farmer is (601) 859-5213.
- Does John Farmer accept Medicare?
- John Farmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Farmer's NPI active?
- Yes — John Farmer's NPI (1891727640) is active in the NPPES registry as of the last update on 2025-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.