Edgar Diaz, M.D.
Internal Medicine Physician · Knoxville, TN
Edgar Diaz, M.D. is an internal medicine physician with a practice address in Knoxville, Tennessee, and NPI 1598912701, issued on Aug 20, 2008. Check the license (Tennessee NOT YET GIVEN, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Edgar Diaz
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- NOT YET GIVEN TN
Self-reported in NPPES; status is on the state search - Practice location
- 131 S Central St, Knoxville, TN 37902
- Phone
- (312) 560-9427
- Enumerated
- Aug 20, 2008
- Record last updated
- Aug 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090810000162); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2006
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Verify Edgar Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license NOT YET GIVENCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average internal medicine physician in 2024
680 Medicare Part D claims for 289 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Cefdinir96 claims
- Prednisone62 claims
- Pantoprazole Sodium34 claims
- Doxycycline Hyclate31 claims
- Cephalexin21 claims
- Bumetanide17 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.
Bills Medicare through one group practice
- Hospital Medicine Services OF Tennessee PCSevierville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Edgar Diaz among 2,596 internal medicine physician records in Tennessee
Edgar Diaz, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2003 among the 1,705 with a school on file
- Record last updated2008 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 2,596 in Tennessee → Every provider in Knoxville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Alley, MDKnoxville, TN 379091295780369
- Michael Bernard, MDKnoxville, TN 379091386633949
- Richard Coffey, MDKnoxville, TN 379091427085356
- Saeed Etezadi-Amoli, MDKnoxville, TN 379091669427142
- Carla Gillespie, MDKnoxville, TN 379091295762276
- David Jerden, MDKnoxville, TN 379091255376513
- Sunil John, MDKnoxville, TN 379091912952177
- Joanna King, MDKnoxville, TN 379091154399053
Common questions
What is Edgar Diaz, M.D.'s NPI number?
Edgar Diaz, M.D.'s National Provider Identifier (NPI) is 1598912701, issued on Aug 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Edgar Diaz, M.D. located?
The NPPES record lists a practice address at 131 S Central St, Knoxville, TN, 37902. Phone: (312) 560-9427. Providers update this record themselves, so call before visiting.
How can I verify Edgar Diaz, M.D.'s license?
NPPES lists Tennessee license number NOT YET GIVEN, 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 Edgar Diaz, M.D. prescribe under Medicare Part D?
In 2024, Edgar Diaz, M.D. had 680 Medicare Part D claims for 289 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.