Robert Knowles, M.D.
NPI 1548251341 · Internal Medicine Physician · Sparta, TN
Robert Knowles, M.D. is a Internal Medicine Physician provider in Sparta, TN (NPI 1548251341).
Provider details
- NPI number
- 1548251341
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD28675 (TN)
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
20 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 · 72 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 104 | 32 |
| Amlodipine Besylate | 85 | 26 |
| Omeprazole | 84 | 22 |
| Levothyroxine Sodium | 78 | 27 |
| Losartan Potassium | 74 | 24 |
| Gabapentin | 72 | 15 |
| Atorvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-31
- Last updated
- 2014-12-17
Frequently asked questions
- What is Robert Knowles's NPI number?
- Robert Knowles's National Provider Identifier (NPI) is 1548251341, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Knowles's specialty?
- Robert Knowles is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Knowles located?
- Robert Knowles's practice location on file with NPPES is 435 Sewell Dr, Sparta, TN 38583-1223.
- What is Robert Knowles's phone number?
- The practice phone number listed in the NPPES registry for Robert Knowles is (931) 738-4595.
- Is Robert Knowles's NPI active?
- Yes — Robert Knowles's NPI (1548251341) is active in the NPPES registry as of the last update on 2014-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.