Gregory Mark Mathien, M.D.
Sports Medicine (Orthopaedic Surgery) Physician · Knoxville, TN
Gregory Mark Mathien, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Knoxville, Tennessee, and NPI 1730156076, issued on Mar 7, 2006. Check the license (Tennessee 21414, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory Mark Mathien
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
- License numbers
- 21414 TN
MD21414 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1422 Old Weisgarber RD, Knoxville, TN 37909
- Phone
- (865) 558-4400
- Enumerated
- Mar 7, 2006
- Record last updated
- Jan 15, 2026
- Fax
- (865) 558-4471
- Medicaid ID
- 3059706 TN
- Medicare enrollment
- Enrolled (PECOS I20100427000037); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1986
- Entity
- Type 1 · individual
8 nearest sports medicine (orthopaedic surgery) physician records → All 106 in Tennessee → Look up another NPI →
Also registered at 1422 Old Weisgarber RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kyle Achors, M.D.Orthopaedic Surgery Physician1760916985
- Shannon Asbury, PA-CPhysician Assistant1174986186
- Stephen Bean, P.A.Physician Assistant1780636340
- Thomas Beeler, M.D.Sports Medicine (Orthopaedic Surgery) Physician1972570661
- Russell Betcher, M.D.Sports Medicine (Orthopaedic Surgery) Physician1659349058
- Cody Blackford, ATC, LAT, CSCSAthletic Trainer1760843254
Verify Gregory Mark Mathien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 21414Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average sports medicine (orthopaedic surgery) physician in 2024
370 Medicare Part D claims for 143 beneficiaries, against an average of 288 among the 2,562 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 16 claims were for opioids.
Most prescribed
- Diclofenac Sodium53 claims
- Amoxicillin45 claims
- Meloxicam42 claims
- Sulfamethoxazole-Trimethoprim42 claims
- Prednisone41 claims
- Gabapentin28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $58.28
1 payment: food and beverage; the largest payer was Ethicon US, LLC. The 2,400 providers of this specialty with any payment received $19,779.31 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Orthotennessee PCKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Mark Mathien among 106 sports medicine (orthopaedic surgery) physician records in Tennessee
Gregory Mark Mathien, M.D. is one of 106 sports medicine (orthopaedic surgery) physician records with a practice address in Tennessee. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 22% of them.
- NPI issued2006 · 22% of these records are older, 45% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 93% of these records are
- Graduated1986 · median 2001 among the 99 with a school on file
- Record last updated2026 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Orthopaedic Surgery) Physician providers in Tennessee
There are 106 sports medicine (orthopaedic surgery) physician records in Tennessee.
All 106 in Tennessee → Every provider in Knoxville → Sports Medicine (Orthopaedic Surgery) Physician nationwide →
The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes
- Thomas Beeler, M.D.Knoxville, TN 379091972570661
- Russell Betcher, M.D.Knoxville, TN 379091659349058
- Michael Casey, MDKnoxville, TN 379161134109804
- Bradley Jaquith, MDKnoxville, TN 379161336448588
- John Reynolds, MDKnoxville, TN 379161831205160
- Michael Kern, M.D.Knoxville, TN 379201093071268
- Paul Becker, MDKnoxville, TN 379221205804473
- Andrew Holt, M.D.Knoxville, TN 379221144608118
Common questions
What is Gregory Mark Mathien, M.D.'s NPI number?
Gregory Mark Mathien, M.D.'s National Provider Identifier (NPI) is 1730156076, issued on Mar 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mark Mathien, M.D. located?
The NPPES record lists a practice address at 1422 Old Weisgarber RD, Knoxville, TN, 37909. Phone: (865) 558-4400. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mark Mathien, M.D.'s license?
NPPES lists Tennessee license number 21414, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Mark Mathien, M.D. prescribe under Medicare Part D?
In 2024, Gregory Mark Mathien, M.D. had 370 Medicare Part D claims for 143 beneficiaries; the average among sports medicine (orthopaedic surgery) physician prescribers was 288. Part D covers Medicare prescriptions only.
What is Gregory Mark Mathien, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.