NPPES file of Aug 9, 2026

Darin David Willardsen, MD

Hospitalist Physician · St Cloud, MN

Darin David Willardsen, MD is a hospitalist physician with a practice address in St Cloud, Minnesota, and NPI 1346230034, issued on Oct 25, 2005. Check the license (Minnesota 41771, as entered in NPPES) on the Minnesota Board of Medical Practice; 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
1346230034
Name
Darin David Willardsen
Credential
MD
Primary taxonomy
Hospitalist Physician 208M00000X
License number
41771 MN
Self-reported in NPPES; status is on the state search
Practice location
1200 6TH Ave N, St Cloud, MN 56303
Phone
(320) 251-2700
Enumerated
Oct 25, 2005
Record last updated
Dec 21, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(320) 240-2118
Medicaid ID
305475600 MN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1200 6TH Ave N

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

  1. Christa Brown-Switzer, DOInternal Medicine Physician1275568396
  2. Monazza Chaudhry, MDPulmonary Disease Physician1598326951
  3. Triniti Feldhege, CNPNeonatal Nurse Practitioner1962487017
  4. Kathryn Katka, APRN, CNPFamily Nurse Practitioner1669494159
  5. Wesley Lindquist, MDInternal Medicine Physician1104816768
  6. Thomas Math, MDInfectious Disease Physician1215927835

Verify Darin David Willardsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 41771
    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 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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82% fewer Medicare Part D claims than the average hospitalist physician in 2024

92 Medicare Part D claims for 22 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Darin Willardsen92
  2. Specialty average521

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.

Darin David Willardsen among 401 hospitalist physician records in Minnesota

Darin David Willardsen, MD is one of 401 hospitalist physician records with a practice address in Minnesota. 92% 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, 96% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileNo · 88% of these records are
  • Record last updated2015 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

29 hospitalist physician records list a practice address in St Cloud

They are 29 of the 474 NPPES records with a practice address in St Cloud, and 401 hospitalist physician records in Minnesota.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Olayiwola Adetunji, MBBSSt Cloud, MN 563031578552477
  2. Christopher Aronson, MDSaint Cloud, MN 563031649269291
  3. Melissa Barry, MDSaint Cloud, MN 563031700846425
  4. Gregory Cooper, MDSaint Cloud, MN 563031730179870
  5. Sherrie Erickson-Birkedahl, MDSt Cloud, MN 563031407830482
  6. Gemma Lim, MD, FACPSt Cloud, MN 563031497726749
  7. Paul Marek, MD, FHMSt Cloud, MN 563031134118920
  8. Eric McFarling, MDSt Cloud, MN 563031467437251

Common questions

What is Darin David Willardsen, MD's NPI number?

Darin David Willardsen, MD's National Provider Identifier (NPI) is 1346230034, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Darin David Willardsen, MD located?

The NPPES record lists a practice address at 1200 6TH Ave N, St Cloud, MN, 56303. Phone: (320) 251-2700. Providers update this record themselves, so call before visiting.

How can I verify Darin David Willardsen, MD's license?

NPPES lists Minnesota license number 41771, 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 Darin David Willardsen, MD prescribe under Medicare Part D?

In 2024, Darin David Willardsen, MD had 92 Medicare Part D claims for 22 beneficiaries; the average among hospitalist physician prescribers was 521. 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.