Timothy Leslie Alder, MD
Diagnostic Radiology Physician · Knoxville, TN
Timothy Leslie Alder, MD is a diagnostic radiology physician with a practice address in Knoxville, Tennessee, and NPI 1922207059, issued on Jul 18, 2007. Check the license (Tennessee 43586, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Timothy Leslie Alder
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 43586 TN
CDRH.0063132 CO
33293 NE
13394C WY
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Laurel Ave, Knoxville, TN 37916
- Phone
- (865) 766-6870
- Enumerated
- Jul 18, 2007
- Record last updated
- Jun 24, 2026
- Fax
- (865) 766-0133
- Medicaid ID
- 1514656 TN
- Medicare enrollment
- Enrolled (PECOS I20080730000146); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 968 in Tennessee → Look up another NPI →
Also registered at 2001 Laurel Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Addonizio, MDDiagnostic Radiology Physician1184604811
- Yaqub Ali, M.D.Specialist1801893771
- Sheri Armstrong, M.D.Diagnostic Radiology Physician1669401196
- Sung Yong Bae, M.D.Internal Medicine Physician1043443997
- Gerald Borrelli, M.D.Nephrology Physician1871599084
- James Burkhart, MDOrthopaedic Surgery Physician1154314607
Verify Timothy Leslie Alder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 43586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 99 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).
Bills Medicare through 2 group practices
- South Georgia Radiology Associates LLCHiawassee, GA
- Vista Radiology, PCFort Collins, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Leslie Alder among 968 diagnostic radiology physician records in Tennessee
Timothy Leslie Alder, MD is one of 968 diagnostic radiology physician records with a practice address in Tennessee. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 35% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2002 · median 2004 among the 657 with a school on file
- Record last updated2026 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
146 diagnostic radiology physician records list a practice address in Knoxville
They are 146 of the 14,339 NPPES records with a practice address in Knoxville, and 968 diagnostic radiology physician records in Tennessee.
All 968 in Tennessee → Every provider in Knoxville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Steven Addonizio, MDKnoxville, TN 379161184604811
- Michael Adler, M.D.Knoxville, TN 379161386645828
- James Brumit, MDKnoxville, TN 379161306826052
- Hugh Delozier, MDKnoxville, TN 379161548240294
- Daniel Fox, MDKnoxville, TN 379161962405183
- Garth Graham, MDKnoxville, TN 379161790765378
- William Holmes, MDKnoxville, TN 379161518937770
- Steven Knight, M.D.Knoxville, TN 379161861479644
Common questions
What is Timothy Leslie Alder, MD's NPI number?
Timothy Leslie Alder, MD's National Provider Identifier (NPI) is 1922207059, issued on Jul 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Leslie Alder, MD located?
The NPPES record lists a practice address at 2001 Laurel Ave, Knoxville, TN, 37916. Phone: (865) 766-6870. Providers update this record themselves, so call before visiting.
How can I verify Timothy Leslie Alder, MD's license?
NPPES lists Tennessee license number 43586, 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.
What is Timothy Leslie Alder, MD's MIPS final score?
The 2023 MIPS final score is 99 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.