Patrick James Mastin, MD
Rheumatology Physician · Knoxville, TN
Patrick James Mastin, MD is a rheumatology physician with a practice address in Knoxville, Tennessee, and NPI 1811251655, issued on Jun 26, 2012. Check the license (Tennessee 51030, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Patrick James Mastin
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 51030 TN
Self-reported in NPPES; status is on the state search - Practice location
- 8975 Executive Park Dr Ste 200, Knoxville, TN 37923
- Phone
- (865) 691-4100
- Enumerated
- Jun 26, 2012
- Record last updated
- Jul 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (833) 908-2116
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 139 in Tennessee → Look up another NPI →
Also registered at 8975 Executive Park Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mishal Abdullah, M.D.Rheumatology Physician1730319518
- Arshita Patel, DONeurology Physician1164802872
- Tiffany Steelman, FNPNurse Practitioner1073783130
- Sarah Stephenson, FNP-BCFamily Nurse Practitioner1841610896
Verify Patrick James Mastin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 51030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average rheumatology physician in 2024
81 Medicare Part D claims for 42 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Hydroxychloroquine Sulfate14 claims
- Cimzia (2 Pack)13 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.
Industry payments in 2024: $49.57
3 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Patrick James Mastin among 139 rheumatology physician records in Tennessee
Patrick James Mastin, MD is one of 139 rheumatology physician records with a practice address in Tennessee. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 75% of them.
- NPI issued2012 · 75% of these records are older, 19% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Tennessee
There are 139 rheumatology physician records in Tennessee.
All 139 in Tennessee → Every provider in Knoxville → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Mishal Abdullah, M.D.Knoxville, TN 379231730319518
- William Bell, MDKnoxville, TN 379231477519585
- James Burns, MDKnoxville, TN 379231235118803
- Kenny Sizemore, MDKnoxville, TN 379231346229861
- Jeffry Bieber, MDKnoxville, TN 379201831294891
- Marcum Collins, M.D.Knoxville, TN 379201154732436
- Gary Klipple, M.D.Knoxville, TN 379201538263926
- Thomas Namey, M.D., FACPKnoxville, TN 379201023172608
Common questions
What is Patrick James Mastin, MD's NPI number?
Patrick James Mastin, MD's National Provider Identifier (NPI) is 1811251655, issued on Jun 26, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Patrick James Mastin, MD located?
The NPPES record lists a practice address at 8975 Executive Park Dr Ste 200, Knoxville, TN, 37923. Phone: (865) 691-4100. Providers update this record themselves, so call before visiting.
How can I verify Patrick James Mastin, MD's license?
NPPES lists Tennessee license number 51030, 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 Patrick James Mastin, MD prescribe under Medicare Part D?
In 2024, Patrick James Mastin, MD had 81 Medicare Part D claims for 42 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
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.