Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gregory Mark Mathien, MD

Individual provider Sports Medicine (Orthopaedic Surgery) Physician · NPI 1730156076

Dr. Gregory Mark Mathien, MD is a Sports Medicine in Knoxville, Tennessee. Graduated from State University of Ny Upstate Medical University in 1986, 40 years ago. Practices with Orthotennessee PC, a 154-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
40
Trained at
State University of Ny Upstate Medical University
Licensed in
TN
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1422 Old Weisgarber Rd
Knoxville, TN 37909-1293
Phone: (865) 558-4400
Fax: (865) 558-4471
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence 21414 (TN)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence MD21414 (TN)

Record details

NPI number1730156076
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 7, 2006
Last updated in NPPESJanuary 15, 2026
Certification dateJanuary 15, 2026
Mailing address8320 E Walker Springs Ln Ste 200, Knoxville, TN 37923-3120

Medicare enrollment

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

Medicare specialtySPORTS MEDICINE
Also practisesORTHOPEDIC SURGERY
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1986 (40 years in practice)
Group practice Orthotennessee Pc — 154 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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