John Kirby, M.D.
NPI 1275539835 · Internal Medicine Physician · Jefferson City, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kirby, M.D. is a Internal Medicine Physician provider in Jefferson City, TN (NPI 1275539835).
Provider details
- NPI number
- 1275539835
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35319 (TN)
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
3,936 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 470 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 445 | $117 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 397 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 371 | $7 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 367 | $13 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 142 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 438 | 124 |
| Lisinopril | 397 | 112 |
| Amlodipine Besylate | 332 | 102 |
| Levothyroxine Sodium | 290 | 75 |
| Omeprazole | 251 | 73 |
| Rosuvastatin Calcium | 232 | 73 |
| Meloxicam | 194 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$361 across 22 records (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
- 2005-06-28
- Last updated
- 2012-09-27
Frequently asked questions
- What is John Kirby's NPI number?
- John Kirby's National Provider Identifier (NPI) is 1275539835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kirby's specialty?
- John Kirby is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Kirby located?
- John Kirby's practice location on file with NPPES is 120 Hospital Dr, Jefferson City, TN 37760-5279.
- What is John Kirby's phone number?
- The practice phone number listed in the NPPES registry for John Kirby is (865) 475-4742.
- Does John Kirby accept Medicare?
- John Kirby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kirby's NPI active?
- Yes — John Kirby's NPI (1275539835) is active in the NPPES registry as of the last update on 2012-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.