Annette Lee Siewert, M.D.
Obstetrics & Gynecology Physician · Sioux Falls, SD
Annette Lee Siewert, M.D. is an obstetrics & gynecology physician with a practice address in Sioux Falls, South Dakota, and NPI 1376716647, issued on Apr 8, 2008. Check the license (South Dakota 8442, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Annette Lee Siewert
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 8442 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1417 S Cliff Ave, Sioux Falls, SD 57105
- Phone
- (605) 322-8920
- Enumerated
- Apr 8, 2008
- Record last updated
- Oct 10, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 6201780 SD
- Medicare enrollment
- Enrolled (PECOS I20120809000895); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 2008
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 99 in South Dakota → Look up another NPI →
Also registered at 1417 S Cliff Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Molly Berg, CNPPerinatal Nurse Practitioner1902878523
- Stephanie Bork, CNPFamily Nurse Practitioner1346992310
- Regan Hammell, CNPOtolaryngology Physician1629858469
- Leslie Heddleston, MDMaternal & Fetal Medicine Physician1639240732
- Cristina Hill Jensen, M.D.Gastroenterology Physician1760691794
- Christopher Hurley, M.D.Gastroenterology Physician1619972783
Verify Annette Lee Siewert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 8442Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
37 Medicare Part D claims for 15 beneficiaries, against an average of 165 among the 28,733 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.
Industry payments in 2024: $20.96
2 payments; by number, the most common kind was food and beverage; the largest payer was Sage Therapeutics, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Avera MckennanSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Annette Lee Siewert among 99 obstetrics & gynecology physician records in South Dakota
Annette Lee Siewert, M.D. is one of 99 obstetrics & gynecology physician records with a practice address in South Dakota. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 64% of them.
- NPI issued2008 · 64% of these records are older, 31% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2008 · median 2007 among the 72 with a school on file
- Record last updated2018 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in South Dakota
There are 99 obstetrics & gynecology physician records in South Dakota.
All 99 in South Dakota → Every provider in Sioux Falls → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ashley Briggs, MDSioux Falls, SD 571051902851140
- Jeanne Hassebroek-Johnson, M.D.Sioux Falls, SD 571051740286491
- Kristin Hermanson, MDSioux Falls, SD 571051770577967
- Laurie Landeen, M.D.Sioux Falls, SD 571051043216799
- Thomas Looby, M.D.Sioux Falls, SD 571051245236991
- Lee Mabee, MDSioux Falls, SD 571051932183753
- Dean Madison, M.D.Sioux Falls, SD 571051174529838
- Shelley Morrison, M.D.Sioux Falls, SD 571051093712630
Common questions
What is Annette Lee Siewert, M.D.'s NPI number?
Annette Lee Siewert, M.D.'s National Provider Identifier (NPI) is 1376716647, issued on Apr 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Annette Lee Siewert, M.D. located?
The NPPES record lists a practice address at 1417 S Cliff Ave, Sioux Falls, SD, 57105. Phone: (605) 322-8920. Providers update this record themselves, so call before visiting.
How can I verify Annette Lee Siewert, M.D.'s license?
NPPES lists South Dakota license number 8442, 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 Annette Lee Siewert, M.D. prescribe under Medicare Part D?
In 2024, Annette Lee Siewert, M.D. had 37 Medicare Part D claims for 15 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.