NPPES file of Aug 9, 2026

Lisa Sitzmann Prusak

Family Medicine Physician · Duluth, MN

Lisa Sitzmann Prusak is a family medicine physician with a practice address in Duluth, Minnesota, and NPI 1659397420, issued on Jul 14, 2006. Check the license (Minnesota 31997, 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
1659397420
Name
Lisa Sitzmann Prusak
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
31997 MN
Self-reported in NPPES; status is on the state search
Practice location
6351 E Superior St, Duluth, MN 55804
Phone
(218) 249-5555
Enumerated
Jul 14, 2006
Record last updated
Jun 15, 2022
Medicaid IDs
31860000 WI
225090000 MN
Medicare enrollment
Enrolled (PECOS I20050513000086); accepts Medicare assignment
Medical or professional school
University Of Minnesota Medical School, 1987
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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Also registered at 6351 E Superior St

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

  1. Lisa Hebl, PA-CPhysician Assistant1003808023
  2. David Hutchinson, M.D.Family Medicine Physician1801886015
  3. Eric Kirchner, M.D.Family Medicine Physician1881889707
  4. Joseph McLean, MDFamily Medicine Physician1598715732
  5. Anne Riddle, MDFamily Medicine Physician1861413080
  6. Lisa Zallar, CNPFamily Nurse Practitioner1831381193

Verify Lisa Sitzmann Prusak 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 31997
    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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87% fewer Medicare Part D claims than the average family medicine physician in 2024

463 Medicare Part D claims for 321 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Lisa Prusak463
  2. Specialty average3,544

Most prescribed

  1. Amoxicillin-Clavulanate Potass53 claims
  2. Prednisone45 claims
  3. Azithromycin37 claims
  4. Doxycycline Hyclate34 claims
  5. Cefdinir26 claims
  6. Nitrofurantoin Mono-Macro25 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 one group practice

  1. St. Luke's Hospital OF DuluthDuluth, MN

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

Lisa Sitzmann Prusak among 3,985 family medicine physician records in Minnesota

Lisa Sitzmann Prusak is one of 3,985 family medicine physician 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 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 42% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1987 · median 2006 among the 2,483 with a school on file
  • Record last updated2022 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

153 family medicine physician records list a practice address in Duluth

They are 153 of the 4,084 NPPES records with a practice address in Duluth, and 3,985 family medicine physician records in Minnesota.

The 8 family medicine physician records with the nearest ZIP codes

  1. Claire Campbell, M.D.Duluth, MN 558041497109755
  2. David Hutchinson, M.D.Duluth, MN 558041801886015
  3. Livingstone IgweDuluth, MN 558041588693238
  4. Kenneth IronsDuluth, MN 558041922037688
  5. Eric Kirchner, M.D.Duluth, MN 558041881889707
  6. Joseph McLean, MDDuluth, MN 558041598715732
  7. Ingrid Nisswandt-Larsen, MDDuluth, MN 558041548351406
  8. Steven PhillipsonDuluth, MN 558041023034105

Common questions

What is Lisa Sitzmann Prusak's NPI number?

Lisa Sitzmann Prusak's National Provider Identifier (NPI) is 1659397420, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Lisa Sitzmann Prusak located?

The NPPES record lists a practice address at 6351 E Superior St, Duluth, MN, 55804. Phone: (218) 249-5555. Providers update this record themselves, so call before visiting.

How can I verify Lisa Sitzmann Prusak's license?

NPPES lists Minnesota license number 31997, 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 Lisa Sitzmann Prusak prescribe under Medicare Part D?

In 2024, Lisa Sitzmann Prusak had 463 Medicare Part D claims for 321 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.