Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark Irwin

Individual provider Infectious Disease Physician · NPI 1104453588

Mark Irwin is registered under Infectious Disease in Knoxville, Tennessee. Qualified in 2020, 6 years ago. Practices with Covenant Medical Group Inc, a 356-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
6
Licensed in
TN
In the registry since
2020
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Practice location Address checks out

501 19th St Ste 600
Knoxville, TN 37916-1852
Phone: (865) 525-4333
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 6170 (TN)

Record details

NPI number1104453588
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 25, 2020
Last updated in NPPESJuly 21, 2025
Certification dateJuly 21, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Covenant Medical Group Inc — 356 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Covenant Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 356 clinicians in the practice; 12 are shown here.

Other providers in Knoxville