NPPES file of Aug 9, 2026

Maria Kolojeski, D.O.

Obstetrics & Gynecology Physician · Duluth, MN

Maria Kolojeski, D.O. is an obstetrics & gynecology physician with a practice address in Duluth, Minnesota, and NPI 1952750952, issued on Jun 9, 2016. Check the license 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952750952
Name
Maria Kolojeski
Credential
D.O.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
94-08919 KS
Self-reported in NPPES; status is on the state search
Practice location
1000 E 1St St Ste LL, Duluth, MN 55805
Phone
(218) 249-5555
Enumerated
Jun 9, 2016
Record last updated
Dec 4, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200918002540); accepts Medicare assignment
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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8 nearest obstetrics & gynecology physician records → All 878 in Minnesota → Look up another NPI →

Also registered at 1000 E 1St St Ste LL

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

  1. Lisa Byrne, RNAmbulatory Care Registered Nurse1497862890
  2. Esther Den HerderPhysician Assistant1033734397
  3. Muhammad Haq, M.D.Endocrinology, Diabetes & Metabolism Physician1790895746
  4. Benjamin Hart, CNMAdvanced Practice Midwife1528470655
  5. Jack Lansing, PA-CPhysician Assistant1750126108
  6. Amanda St Aubin, CNMAdvanced Practice Midwife1659688240

Verify Maria Kolojeski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical PracticeCheck 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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Bills Medicare through one group practice

  1. Centracare ClinicSaint Cloud, MN

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

Maria Kolojeski among 878 obstetrics & gynecology physician records in Minnesota

Maria Kolojeski, D.O. is one of 878 obstetrics & gynecology physician records with a practice address in Minnesota. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.

  • NPI issued2016 · 83% of these records are older, 15% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2016 · median 2007 among the 569 with a school on file
  • Record last updated2020 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Minnesota

There are 878 obstetrics & gynecology physician records in Minnesota.

All 878 in Minnesota → Every provider in Duluth → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Stephen BloomDuluth, MN 558051245269695
  2. Jennifer Boyle, MDDuluth, MN 558051073582375
  3. Irene CarrDuluth, MN 558051437194735
  4. Susan Goltz, MDDuluth, MN 558051811966500
  5. Scott JohnsonDuluth, MN 558051063445922
  6. James KobersteinDuluth, MN 558051396785986
  7. Michael Laberge, M.D.Duluth, MN 558051902844715
  8. Melissa Miller, MDDuluth, MN 558051235108366

Common questions

What is Maria Kolojeski, D.O.'s NPI number?

Maria Kolojeski, D.O.'s National Provider Identifier (NPI) is 1952750952, issued on Jun 9, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Maria Kolojeski, D.O. located?

The NPPES record lists a practice address at 1000 E 1St St Ste LL, Duluth, MN, 55805. Phone: (218) 249-5555. Providers update this record themselves, so call before visiting.

How can I verify Maria Kolojeski, D.O.'s license?

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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.