William Carl Thacker, M D
Anatomic Pathology & Clinical Pathology Physician · Greeneville, TN
William Carl Thacker, M D is an anatomic pathology & clinical pathology physician with a practice address in Greeneville, Tennessee, and NPI 1639217516, issued on Feb 2, 2007. Check the license (Tennessee MD0000004219, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Carl Thacker
- Credential
- M D
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- MD0000004219 TN
Self-reported in NPPES; status is on the state search - Practice location
- 209 N College St, Greeneville, TN 37745
- Phone
- (423) 639-5781
- Enumerated
- Feb 2, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (423) 639-2218
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 475 in Tennessee → Look up another NPI →
Verify William Carl Thacker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000004219Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average anatomic pathology & clinical pathology physician in 2024
19 Medicare Part D claims, against an average of 192 among the 401 providers of this specialty who prescribed in Part D.
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.
William Carl Thacker among 475 anatomic pathology & clinical pathology physician records in Tennessee
William Carl Thacker, M D is one of 475 anatomic pathology & clinical pathology physician records with a practice address in Tennessee. 63% 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 53% of them.
- NPI issued2007 · 53% of these records are older, 35% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2007 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Tennessee
There are 475 anatomic pathology & clinical pathology physician records in Tennessee.
All 475 in Tennessee → Every provider in Greeneville → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Robert Schmadeka, M.D.Greeneville, TN 377451669645123
- Clara Cobb, M.D.Kingston, TN 377631821138397
- Jean Collins, D.O.Maryville, TN 378041790978518
- John Hilsenbeck, MDMaryville, TN 378041154380566
- Robert Potter, MDMaryville, TN 378041427096387
- Michael Teague, MDMaryville, TN 378041619922457
- James Vinson, MDMaryville, TN 378041407822711
- Elizabeth Arze, M.D.Mountain Home, TN 376841558637082
Common questions
What is William Carl Thacker, M D's NPI number?
William Carl Thacker, M D's National Provider Identifier (NPI) is 1639217516, issued on Feb 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Carl Thacker, M D located?
The NPPES record lists a practice address at 209 N College St, Greeneville, TN, 37745. Phone: (423) 639-5781. Providers update this record themselves, so call before visiting.
How can I verify William Carl Thacker, M D's license?
NPPES lists Tennessee license number MD0000004219, 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 William Carl Thacker, M D prescribe under Medicare Part D?
In 2024, William Carl Thacker, M D had 19 Medicare Part D claims; the average among anatomic pathology & clinical pathology physician prescribers was 192. 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.