William J. Reardon, D.D.S.
Dentist · Yankton, SD
William J. Reardon, D.D.S. is a dentist with a practice address in Yankton, South Dakota, and NPI 1164432258, issued on Aug 9, 2006. Check the license (South Dakota M824, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William J. Reardon
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- License number
- M824 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Broadway Ave, Yankton, SD 57078
- Phone
- (605) 668-2273
- Enumerated
- Aug 9, 2006
- Record last updated
- Apr 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (605) 668-2273
- Entity
- Type 1 · individual
8 nearest dentist records → All 235 in South Dakota → Look up another NPI →
Verify William J. Reardon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license M824Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average dentist in 2024
128 Medicare Part D claims for 72 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 25 claims were for opioids.
Most prescribed
- Amoxicillin55 claims
- Chlorhexidine Gluconate13 claims
- Hydrocodone-Acetaminophen11 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 J. Reardon among 235 dentist records in South Dakota
William J. Reardon, D.D.S. is one of 235 dentist records with a practice address in South Dakota. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 73% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · 1% of these records are
- Record last updated2014 · 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 122300000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 dentist records list a practice address in Yankton
They are 8 of the 515 NPPES records with a practice address in Yankton, and 235 dentist records in South Dakota.
All 235 in South Dakota → Every provider in Yankton → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Ryan Bakke, DDSYankton, SD 570781669464095
- Jon Baumann, DDSYankton, SD 570781013062728
- Darcie Briggs, DDSYankton, SD 570781346257037
- Michael Briggs, DDSYankton, SD 570781417964115
- Paige Elwood, D.D.S.Yankton, SD 570781174759864
- Jack Schoenfelder, DDSYankton, SD 570781841122041
- Jessie Scott, D.D.S.Yankton, SD 570781972707131
- Blake Kopf, DDSVermillion, SD 570691144711896
Common questions
What is William J. Reardon, D.D.S.'s NPI number?
William J. Reardon, D.D.S.'s National Provider Identifier (NPI) is 1164432258, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Reardon, D.D.S. located?
The NPPES record lists a practice address at 1100 Broadway Ave, Yankton, SD, 57078. Phone: (605) 668-2273. Providers update this record themselves, so call before visiting.
How can I verify William J. Reardon, D.D.S.'s license?
NPPES lists South Dakota license number M824, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does William J. Reardon, D.D.S. prescribe under Medicare Part D?
In 2024, William J. Reardon, D.D.S. had 128 Medicare Part D claims for 72 beneficiaries; the average among dentist prescribers was 86. 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.