Donald Walter Theisen Wessel, MD
Internal Medicine Physician · Stillwater, MN
Donald Walter Theisen Wessel, MD is an internal medicine physician with a practice address in Stillwater, Minnesota, and NPI 1538142518, issued on Nov 23, 2005. Check the license (Minnesota 33844, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Donald Walter Theisen Wessel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 33844 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Curve Crest Blvd., Stillwater, MN 55082
- Phone
- (651) 439-1234
- Enumerated
- Nov 23, 2005
- Record last updated
- Nov 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (651) 275-3325
- Medicaid IDs
- 31871100 WI
051803400 MN - Medicare enrollment
- Enrolled (PECOS I20050328000086); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 1500 Curve Crest Blvd.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennie-Beth Kruger, ATCAthletic Trainer1548407901
Verify Donald Walter Theisen Wessel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 33844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average internal medicine physician in 2024
13,023 Medicare Part D claims for 1,081 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 221 claims were for opioids.
Most prescribed
- Atorvastatin Calcium983 claims
- Amlodipine Besylate704 claims
- Losartan Potassium519 claims
- Lisinopril475 claims
- Omeprazole465 claims
- Metoprolol Succinate405 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.
Bills Medicare through 2 group practices
- Amery Regional Medical Center IncAmery, WI
- Group Health Plan IncStillwater, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald Walter Theisen Wessel among 2,632 internal medicine physician records in Minnesota
Donald Walter Theisen Wessel, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 75% 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, 92% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1989 · median 2008 among the 1,700 with a school on file
- Record last updated2019 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 internal medicine physician records list a practice address in Stillwater
They are 22 of the 979 NPPES records with a practice address in Stillwater, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Stillwater → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- April Abrahamson, MDStillwater, MN 550821679532246
- Kimberly Anderson-Uzpen, MDStillwater, MN 550821235234113
- Joseph Ardolf, MDStillwater, MN 550821144203118
- Charles Bransford, MDStillwater, MN 550821568448538
- Andrew Dorwart, MDStillwater, MN 550821174513659
- Wendy Heck, MDStillwater, MN 550821740263714
- Silvia Hugec, M.DStillwater, MN 550821932210994
- Lawrence Lorbiecki, MDStillwater, MN 550821437255932
Common questions
What is Donald Walter Theisen Wessel, MD's NPI number?
Donald Walter Theisen Wessel, MD's National Provider Identifier (NPI) is 1538142518, issued on Nov 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Donald Walter Theisen Wessel, MD located?
The NPPES record lists a practice address at 1500 Curve Crest Blvd., Stillwater, MN, 55082. Phone: (651) 439-1234. Providers update this record themselves, so call before visiting.
How can I verify Donald Walter Theisen Wessel, MD's license?
NPPES lists Minnesota license number 33844, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donald Walter Theisen Wessel, MD prescribe under Medicare Part D?
In 2024, Donald Walter Theisen Wessel, MD had 13,023 Medicare Part D claims for 1,081 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.