NPPES file of Aug 9, 2026

Dennis W. Siemsen, OD

Optometrist · Rochester, MN

Dennis W. Siemsen, OD is an optometrist with a practice address in Rochester, Minnesota, and NPI 1598742074, issued on Dec 27, 2005. Check the license (Minnesota 2713, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1598742074
Name
Dennis W. Siemsen
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
2713 MN
Self-reported in NPPES; status is on the state search
Practice location
200 1St St SW, Rochester, MN 55905
Phone
(507) 284-2511
Enumerated
Dec 27, 2005
Record last updated
Feb 26, 2026
Medicare enrollment
Enrolled (PECOS I20130401000420); accepts Medicare assignment
Medical or professional school
Illinois College Of Optometry At Chicago, 1976
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.
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8 nearest optometrist records → All 1,142 in Minnesota → Look up another NPI →

Also registered at 200 1St St SW

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Timothy Aadland, M.D.Diagnostic Radiology Physician1780662783
  2. Christopher Aakre, MDInternal Medicine Physician1508151663
  3. Kathryn Aaro, P.T.Physical Therapist1619360666
  4. Danielle Aase, MDReproductive Endocrinology Physician1316524135
  5. Uzoamaka Abajue, PHARMDPharmacist1982335295
  6. Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246

Verify Dennis W. Siemsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license 2713    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
Find the Minnesota 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.

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Bills Medicare through one group practice

  1. Mayo ClinicRochester, MN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Dennis W. Siemsen among 1,142 optometrist records in Minnesota

Dennis W. Siemsen, OD is one of 1,142 optometrist records with a practice address in Minnesota. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1976 · median 2008 among the 778 with a school on file
  • Record last updated2026 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Minnesota

There are 1,142 optometrist records in Minnesota.

All 1,142 in Minnesota → Every provider in Rochester → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. William Brown, ODRochester, MN 559051679547194
  2. Jackie Cohrs, ODRochester, MN 559051932637774
  3. Jodi Moore-Weiss, ODRochester, MN 559051003036427
  4. Cherie Nau, ODRochester, MN 559051609164094
  5. Trevor PhillipsRochester, MN 559051104668060
  6. Muriel Schornack, ODRochester, MN 559051730152349
  7. Alaina Softing Hataye, ODRochester, MN 559051427155654
  8. Gina Stalboerger, ODRochester, MN 559051699745216

Common questions

What is Dennis W. Siemsen, OD's NPI number?

Dennis W. Siemsen, OD's National Provider Identifier (NPI) is 1598742074, issued on Dec 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Dennis W. Siemsen, OD located?

The NPPES record lists a practice address at 200 1St St SW, Rochester, MN, 55905. Phone: (507) 284-2511. Providers update this record themselves, so call before visiting.

How can I verify Dennis W. Siemsen, OD's license?

NPPES lists Minnesota license number 2713, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.