Nathan A. Gray, MD
Internal Medicine Physician · Knoxville, TN
Nathan A. Gray, MD is an internal medicine physician with a practice address in Knoxville, Tennessee, and NPI 1952347999, issued on Jun 20, 2006. Check the license (Tennessee 36905, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nathan A. Gray
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 36905 TN
Self-reported in NPPES; status is on the state search - Practice location
- 11808 Kingston Pike Ste 160, Knoxville, TN 37934
- Phone
- (865) 966-3940
- Enumerated
- Jun 20, 2006
- Record last updated
- Apr 27, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (865) 966-6914
- Medicaid ID
- 3882745 TN
- Medicare enrollment
- Enrolled (PECOS I20050415000770); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2000
- Entity
- Type 1 · individual
Also registered at 11808 Kingston Pike Ste 160
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Brown, PA-CPhysician Assistant1477100766
- Beth Fleming, PA-CPhysician Assistant1538672118
- Savannah France, PAMedical Physician Assistant1336851161
- Stacey Hinkle, P.A.-CPhysician Assistant1851622237
- Kelly Warwick, PTPhysical Therapist1417002288
- Kerry Witt, APRNFamily Nurse Practitioner1538836325
Verify Nathan A. Gray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 36905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average internal medicine physician in 2024
5,075 Medicare Part D claims for 380 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium322 claims
- Levothyroxine Sodium231 claims
- Amlodipine Besylate213 claims
- Rosuvastatin Calcium211 claims
- Metformin Hcl163 claims
- Losartan Potassium152 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: $397.12
34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Summit Medical Group, PLLCKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
237 internal medicine physician records list a practice address in Knoxville
They are 237 of the 14,339 NPPES records with a practice address in Knoxville, and 2,596 internal medicine physician records in Tennessee.
All 237 in Knoxville → All 2,596 in Tennessee → Every provider in Knoxville →
Other internal medicine physician records in Tennessee
- John Aaron, MDClarksville, TN1629019922
- Damon Abaray, MDNashville, TN1275680134
- Samuel Abbas, MDHixson, TN1497105373
- Matthew Abbate, MDNashville, TN1982796306
- Sarmed Abdullah, M.D.Lexington, TN1588755359
- Temidayo Abe, MDNashville, TN1366947798
- Ahad Abid, MDNashville, TN1316500176
- Mouna Abouamara, MDJohnson City, TN1447324603
- Betty Abraham, MDChattanooga, TN1093923633
- Rawan Abu-Zeitoon, M.DKingsport, TN1265621072
Common questions
What is Nathan A. Gray, MD's NPI number?
Nathan A. Gray, MD's National Provider Identifier (NPI) is 1952347999, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan A. Gray, MD located?
The NPPES record lists a practice address at 11808 Kingston Pike Ste 160, Knoxville, TN, 37934. Phone: (865) 966-3940. Providers update this record themselves, so call before visiting.
How can I verify Nathan A. Gray, MD's license?
NPPES lists Tennessee license number 36905, 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 Nathan A. Gray, MD prescribe under Medicare Part D?
In 2024, Nathan A. Gray, MD had 5,075 Medicare Part D claims for 380 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.