Lee Thomas Gertsen, D.D.S.
Dentist · Sioux Falls, SD
Lee Thomas Gertsen, D.D.S. is a dentist with a practice address in Sioux Falls, South Dakota, and NPI 1780811406, issued on Jun 20, 2009. Check the license (South Dakota D0908, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lee Thomas Gertsen
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- License numbers
- D0908 SD
08627 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2001 W 45TH St, Sioux Falls, SD 57105
- Phone
- (605) 338-9242
- Enumerated
- Jun 20, 2009
- Record last updated
- Mar 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 235 in South Dakota → Look up another NPI →
Also registered at 2001 W 45TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brienne Grossman, D.D.SGeneral Practice Dentistry1720347677
- Kim Suga, D.D.S.General Practice Dentistry1871720599
Verify Lee Thomas Gertsen 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 D0908Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average dentist in 2024
38 Medicare Part D claims for 27 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Penicillin V Potassium14 claims
- Chlorhexidine Gluconate11 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.
Lee Thomas Gertsen among 235 dentist records in South Dakota
Lee Thomas Gertsen, 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 2009, is newer than 49% of them.
- NPI issued2009 · 49% of these records are older, 49% 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).
Dentist providers in South Dakota
There are 235 dentist records in South Dakota.
All 235 in South Dakota → Every provider in Sioux Falls → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Craig Dillon, DDSSioux Falls, SD 571051497916167
- Milton Eisiminger, DDSSioux Falls, SD 571051760416606
- Douglas Idema, DDSSioux Falls, SD 571051285709394
- Tim Kappenman, D.D.S.Sioux Falls, SD 571051861426546
- Jill Paulson, D.D.S.Sioux Falls, SD 571051528016839
- Howard Peterson, DDSSioux Falls, SD 571051568547578
- Gina Pfeiffer, DDSSioux Falls, SD 571051598823452
- Katherine Reardon, DDSSioux Falls, SD 571051124330725
Common questions
What is Lee Thomas Gertsen, D.D.S.'s NPI number?
Lee Thomas Gertsen, D.D.S.'s National Provider Identifier (NPI) is 1780811406, issued on Jun 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Lee Thomas Gertsen, D.D.S. located?
The NPPES record lists a practice address at 2001 W 45TH St, Sioux Falls, SD, 57105. Phone: (605) 338-9242. Providers update this record themselves, so call before visiting.
How can I verify Lee Thomas Gertsen, D.D.S.'s license?
NPPES lists South Dakota license number D0908, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does Lee Thomas Gertsen, D.D.S. prescribe under Medicare Part D?
In 2024, Lee Thomas Gertsen, D.D.S. had 38 Medicare Part D claims for 27 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.