NPPES file of Aug 9, 2026

Clinton Lyle Seifert, MD

Surgery Physician · Mitchell, SD

Clinton Lyle Seifert, MD is a surgery physician with a practice address in Mitchell, South Dakota, and NPI 1306041801, issued on Jun 15, 2007. Check the license (South Dakota 8535, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306041801
Name
Clinton Lyle Seifert
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License numbers
8535 SD
046768 KS
Self-reported in NPPES; status is on the state search
Practice location
2200 N Kimball St Ste 200, Mitchell, SD 57301
Phone
(605) 996-8989
Enumerated
Jun 15, 2007
Record last updated
Aug 8, 2012 (not updated in 14 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20121025000376); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 2007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Verify Clinton Lyle Seifert in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
    Search for license 8535
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

39% fewer Medicare Part D claims than the average surgery physician in 2024

90 Medicare Part D claims for 56 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 27 claims were for opioids.

  1. Clinton Seifert90
  2. Specialty average147

Most prescribed

  1. Oxycodone Hcl23 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.

Industry payments in 2024: $556.88

28 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Clinton Seifert$556.88
  2. Specialty average$3,513.80

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Cass Regional Medical CenterPleasant Hill, MO · Critical Access Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Clinton Lyle Seifert among 114 surgery physician records in South Dakota

Clinton Lyle Seifert, MD is one of 114 surgery physician records with a practice address in South Dakota. 69% 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 58% of them.

  • NPI issued2007 · 58% of these records are older, 32% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2007 · median 2006 among the 72 with a school on file
  • Record last updated2012 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 surgery physician records list a practice address in Mitchell

They are 5 of the 359 NPPES records with a practice address in Mitchell, and 114 surgery physician records in South Dakota.

The 8 surgery physician records with the nearest ZIP codes

  1. Michael Haley, MDMitchell, SD 573011922064237
  2. Jerome Howe, MDMitchell, SD 573011831155142
  3. Dennis Leland, MDMitchell, SD 573011467418772
  4. Andrew Reynolds, MDMitchell, SD 573011699731901
  5. Andrew Haputa, M.D.Sisseton, SD 572621700855491
  6. Terry Larsen, D.O.Sisseton, SD 572621144340712
  7. Cy Haatvedt, M.D.Huron, SD 573501942205489
  8. Anthony Loewen, MDHuron, SD 573501619350469

Common questions

What is Clinton Lyle Seifert, MD's NPI number?

Clinton Lyle Seifert, MD's National Provider Identifier (NPI) is 1306041801, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Clinton Lyle Seifert, MD located?

The NPPES record lists a practice address at 2200 N Kimball St Ste 200, Mitchell, SD, 57301. Phone: (605) 996-8989. Providers update this record themselves, so call before visiting.

How can I verify Clinton Lyle Seifert, MD's license?

NPPES lists South Dakota license number 8535, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Clinton Lyle Seifert, MD prescribe under Medicare Part D?

In 2024, Clinton Lyle Seifert, MD had 90 Medicare Part D claims for 56 beneficiaries; the average among surgery physician prescribers was 147. 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.