Mark H. Winholtz
Specialist · Andover, MN
Mark H. Winholtz is a specialist with a practice address in Andover, Minnesota, and NPI 1659325066, issued on May 20, 2006. Check the license (Minnesota 31391, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark H. Winholtz
- Primary taxonomy
- Specialist 174400000X
- License number
- 31391 MN
Self-reported in NPPES; status is on the state search - Practice location
- 14860 Makah St NW, Andover, MN 55304
- Phone
- (763) 421-8382
- Enumerated
- May 20, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest specialist records → All 838 in Minnesota → Look up another NPI →
Verify Mark H. Winholtz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license 31391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average specialist in 2024
16 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Ondansetron Odt13 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.
Mark H. Winholtz among 838 specialist records in Minnesota
Mark H. Winholtz is one of 838 specialist records with a practice address in Minnesota. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 76% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 5% of these records are
- Record last updated2026 · 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 174400000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 specialist records list a practice address in Andover
They are 3 of the 396 NPPES records with a practice address in Andover, and 838 specialist records in Minnesota.
All 838 in Minnesota → Every provider in Andover → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Pamela Robsahm, MTAndover, MN 553041770731739
- Karen SathreAndover, MN 553041811197098
- Katherine Barrett, OTDMinnetonka, MN 553051760523427
- John Beeman, M.D.Anoka, MN 553031902095326
- Kathryn Biederman, OTRLMinnetonka, MN 553051588722706
- Anne Ford, LICSWMinnetonka, MN 553051700045275
- Sarah Holland, OTRMinnetonka, MN 553051164580288
- Laurel Iverson, L.M.T.Ramsey, MN 553031487875563
Common questions
What is Mark H. Winholtz's NPI number?
Mark H. Winholtz's National Provider Identifier (NPI) is 1659325066, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark H. Winholtz located?
The NPPES record lists a practice address at 14860 Makah St NW, Andover, MN, 55304. Phone: (763) 421-8382. Providers update this record themselves, so call before visiting.
How can I verify Mark H. Winholtz's license?
NPPES lists Minnesota license number 31391, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.
How much does Mark H. Winholtz prescribe under Medicare Part D?
In 2024, Mark H. Winholtz had 16 Medicare Part D claims; the average among specialist prescribers was 1,380. 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.