Karin A. Vassar, NP
Adult Health Nurse Practitioner · Minneapolis, MN
Karin A. Vassar, NP is an adult health nurse practitioner with a practice address in Minneapolis, Minnesota, and NPI 1699906578, issued on Jul 27, 2009. Check the license (Minnesota R 171539-4, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karin A. Vassar
- Credential
- NP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- R 171539-4 MN
Self-reported in NPPES; status is on the state search - Practice location
- 420 Delaware St SE, Minneapolis, MN 55455
- Phone
- (612) 624-1400
- Enumerated
- Jul 27, 2009
- Record last updated
- Jul 27, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 601 in Minnesota → Look up another NPI →
Also registered at 420 Delaware St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Iya AbdulkarimStudent in an Organized Health Care Education/Training Program1760359319
- Ala Saleem Ahmad Abu-Dayeh, MDStudent in an Organized Health Care Education/Training Program1639967797
- Ian Ackers, DO, PHDPhysical Medicine & Rehabilitation Physician1609455112
- Joseph Acquaye, MDUrology Physician1477907186
- Anna Adamusiak, M.D, PH.D.Student in an Organized Health Care Education/Training Program1023559192
- Divyansh Agarwal, MD, PHD, MSStudent in an Organized Health Care Education/Training Program1760068563
Verify Karin A. Vassar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license R 171539-4Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
407 Medicare Part D claims for 52 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 18 claims were for opioids.
Most prescribed
- Sulfamethoxazole-Trimethoprim59 claims
- Atorvastatin Calcium41 claims
- Furosemide29 claims
- Valganciclovir Hcl28 claims
- Carvedilol14 claims
- Dapsone14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Karin A. Vassar among 601 adult health nurse practitioner records in Minnesota
Karin A. Vassar, NP is one of 601 adult health nurse practitioner records with a practice address in Minnesota. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 35% of them.
- NPI issued2009 · 35% of these records are older, 61% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2009 · 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 363LA2200X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in Minnesota
There are 601 adult health nurse practitioner records in Minnesota.
All 601 in Minnesota → Every provider in Minneapolis → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Mary Danich, N.P.Minneapolis, MN 554551013944578
- Nancy Davis, ARNPMinneapolis, MN 554551790891729
- Raquel De La Mater, NPMinneapolis, MN 554551760747471
- Cara Gaherty, ANP-CMinneapolis, MN 554551053637835
- Bethany Hanke, NPMinneapolis, MN 554551841555927
- Dawn Jenniges, NPMinneapolis, MN 554551669602306
- Ashley Johnson, DNP, RN, ANP-CMinneapolis, MN 554551982999397
- Deborah Lacroix, A.N.P.Minneapolis, MN 554551235153313
Common questions
What is Karin A. Vassar, NP's NPI number?
Karin A. Vassar, NP's National Provider Identifier (NPI) is 1699906578, issued on Jul 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Karin A. Vassar, NP located?
The NPPES record lists a practice address at 420 Delaware St SE, Minneapolis, MN, 55455. Phone: (612) 624-1400. Providers update this record themselves, so call before visiting.
How can I verify Karin A. Vassar, NP's license?
NPPES lists Minnesota license number R 171539-4, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.
How much does Karin A. Vassar, NP prescribe under Medicare Part D?
In 2024, Karin A. Vassar, NP had 407 Medicare Part D claims for 52 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
What is Karin A. Vassar, NP's MIPS final score?
The 2023 MIPS final score is 81.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.