Robert Knox, M.D.
NPI 1457349425 · Gastroenterology Physician · Murfreesboro, TN
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Knox, M.D. is a Gastroenterology Physician provider in Murfreesboro, TN (NPI 1457349425).
Provider details
- NPI number
- 1457349425
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20879 (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
954 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 181 | $229 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 147 | $110 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 140 | $82 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 76 | $9 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 69 | $102 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 374 | 109 |
| Pantoprazole Sodium | 141 | 38 |
| Famotidine | 46 | 12 |
| Linaclotidebrand: Linzess | 37 | — |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 36 | — |
| Esomeprazole Magnesium | 36 | 13 |
| Budesonidebrand: Budesonide Dr | 34 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,115 across 155 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
- 2005-10-12
- Last updated
- 2020-06-26
- Certified
- 2020-06-26
Frequently asked questions
- What is Robert Knox's NPI number?
- Robert Knox's National Provider Identifier (NPI) is 1457349425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Knox's specialty?
- Robert Knox is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Knox located?
- Robert Knox's practice location on file with NPPES is 1272 Garrison Dr, Murfreesboro, TN 37129-2598.
- What is Robert Knox's phone number?
- The practice phone number listed in the NPPES registry for Robert Knox is (615) 867-8070.
- Does Robert Knox accept Medicare?
- Robert Knox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Knox's NPI active?
- Yes — Robert Knox's NPI (1457349425) is active in the NPPES registry as of the last update on 2020-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.