David Linn, M.D.
NPI 1306871264 · Emergency Medicine Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Linn, M.D. is a Emergency Medicine Physician provider in Knoxville, TN (NPI 1306871264).
Provider details
- NPI number
- 1306871264
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD36941 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
306 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 213 | $160 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 72 | $111 |
| Critical Care, First 30-74 Minutes99291 | 21 | $195 |
Typical Medicare-allowed amounts for these services range $111–$195 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 43 | 43 |
| Doxycycline Hyclate | 35 | 35 |
| Ciprofloxacin Hcl | 31 | 29 |
| Famotidine | 28 | 28 |
| Ondansetronbrand: Ondansetron Odt | 28 | 28 |
| Azithromycin | 23 | 22 |
| Tramadol Hcl | 23 | 23 |
| Oxycodone Hcl/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2007-11-30
Frequently asked questions
- What is David Linn's NPI number?
- David Linn's National Provider Identifier (NPI) is 1306871264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Linn's specialty?
- David Linn is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Linn located?
- David Linn's practice location on file with NPPES is 1924 Alcoa Hwy, Knoxville, TN 37920-1511.
- What is David Linn's phone number?
- The practice phone number listed in the NPPES registry for David Linn is (865) 544-9000.
- Does David Linn accept Medicare?
- David Linn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Linn's NPI active?
- Yes — David Linn's NPI (1306871264) is active in the NPPES registry as of the last update on 2007-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.