William Nelson Castle, D.D.S.
General Practice Dentistry · Memphis, TN
William Nelson Castle, D.D.S. is a general practice dentistry with a practice address in Memphis, Tennessee, and NPI 1699892919, issued on Mar 23, 2007. Check the license (Tennessee DS 5412, as entered in NPPES) with the Tennessee board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Nelson Castle
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DS 5412 TN
Self-reported in NPPES; status is on the state search - Practice location
- 79 N Cooper St, Memphis, TN 38104
- Phone
- (901) 685-5008
- Enumerated
- Mar 23, 2007
- Record last updated
- May 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (901) 685-5015
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 2,023 in Tennessee → Look up another NPI →
Verify William Nelson Castle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
Search for license DS 5412Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average general practice dentistry in 2024
27 Medicare Part D claims for 19 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Penicillin V Potassium16 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.
William Nelson Castle among 2,023 general practice dentistry records in Tennessee
William Nelson Castle, D.D.S. is one of 2,023 general practice dentistry records with a practice address in Tennessee. 68% 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 40% of them.
- NPI issued2007 · 40% of these records are older, 41% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
211 general practice dentistry records list a practice address in Memphis
They are 211 of the 12,794 NPPES records with a practice address in Memphis, and 2,023 general practice dentistry records in Tennessee.
All 2,023 in Tennessee → Every provider in Memphis → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Chad Baltz, DMDMemphis, TN 381041972647956
- Jackie Drake, D.D.S.Memphis, TN 381041508026840
- Scott Edwards, D.D.S.Memphis, TN 381041376613711
- Gregory Kemp, D.D.S.Memphis, TN 381041518037050
- Sue Langham, D.M.D.Memphis, TN 381041932391455
- Clayton Myers, DDSMemphis, TN 381041922674787
- Joe O'Neal, D.D.S.Memphis, TN 381041336286137
- Rachel Reedy, DDSMemphis, TN 381041275035966
Common questions
What is William Nelson Castle, D.D.S.'s NPI number?
William Nelson Castle, D.D.S.'s National Provider Identifier (NPI) is 1699892919, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Nelson Castle, D.D.S. located?
The NPPES record lists a practice address at 79 N Cooper St, Memphis, TN, 38104. Phone: (901) 685-5008. Providers update this record themselves, so call before visiting.
How can I verify William Nelson Castle, D.D.S.'s license?
NPPES lists Tennessee license number DS 5412, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.
How much does William Nelson Castle, D.D.S. prescribe under Medicare Part D?
In 2024, William Nelson Castle, D.D.S. had 27 Medicare Part D claims for 19 beneficiaries; the average among general practice dentistry prescribers was 83. 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.