John Irwin, M.D.
NPI 1215982459 · Emergency Medicine Physician · Knoxville, TN
John Irwin, M.D. is a Emergency Medicine Physician provider in Knoxville, TN (NPI 1215982459).
Provider details
- NPI number
- 1215982459
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 009436 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-24
- Last updated
- 2010-08-09
Frequently asked questions
- What is John Irwin's NPI number?
- John Irwin's National Provider Identifier (NPI) is 1215982459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Irwin's specialty?
- John Irwin is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Irwin located?
- John Irwin's practice location on file with NPPES is 900 E Oak Hill Ave, Knoxville, TN 37917-4522.
- What is John Irwin's phone number?
- The practice phone number listed in the NPPES registry for John Irwin is (865) 545-8000.
- Is John Irwin's NPI active?
- Yes — John Irwin's NPI (1215982459) is active in the NPPES registry as of the last update on 2010-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.