NPPES file of Aug 9, 2026

Heidi A. Greifzu, APRN, MHNP

Psychiatric/Mental Health Nurse Practitioner · Duluth, MN

Heidi A. Greifzu, APRN, MHNP is a psychiatric/mental health nurse practitioner with a practice address in Duluth, Minnesota, and NPI 1386260370, issued on Jun 25, 2020. Check the license (Minnesota 7587, as entered in NPPES) with the Minnesota board that licenses this profession; 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
1386260370
Name
Heidi A. Greifzu
Credential
APRN, MHNP
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
7587 MN
Self-reported in NPPES; status is on the state search
Practice location
502 E 2ND St, Duluth, MN 55805
Phone
(218) 786-8364
Enumerated
Jun 25, 2020
Record last updated
Aug 14, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200825000895); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 psychiatric/mental health nurse practitioner records → All 990 in Minnesota → Look up another NPI →

Also registered at 502 E 2ND St

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

  1. Alissa Acker, MASpeech-Language Pathologist1841644994
  2. Robin AndersonPsychologist1033254784
  3. Sally AndersonClinical Social Worker1881757367
  4. Stephanie Anderson, PHARMDPharmacist1023328853
  5. Katharine Andrews, MDPsychiatry Physician1154909125
  6. Jaclyn Barney, APRN, CNPPsychiatric/Mental Health Nurse Practitioner1104022573

Verify Heidi A. Greifzu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license 7587    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
Find 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. Psych North PLLCHibbing, MN

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

Heidi A. Greifzu among 990 psychiatric/mental health nurse practitioner records in Minnesota

Heidi A. Greifzu, APRN, MHNP is one of 990 psychiatric/mental health nurse practitioner records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 43% of them.

  • NPI issued2020 · 43% of these records are older, 49% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2020 · median 2021 among the 675 with a school on file
  • Record last updated2020 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

46 psychiatric/mental health nurse practitioner records list a practice address in Duluth

They are 46 of the 4,084 NPPES records with a practice address in Duluth, and 990 psychiatric/mental health nurse practitioner records in Minnesota.

All 990 in Minnesota → Every provider in Duluth → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Jaclyn Barney, APRN, CNPDuluth, MN 558051104022573
  2. Robin Brady, CNPDuluth, MN 558051689988461
  3. Cortney Buchholz, RNDuluth, MN 558051558655894
  4. Molly Dwyer, APRN, CNPDuluth, MN 558051003468760
  5. Nicole GranbergDuluth, MN 558051841672797
  6. Brent Hanson, MSN, CNP, PMHNP-BCDuluth, MN 558051861945743
  7. Pamela JamesDuluth, MN 558051902076086
  8. Jessica Johnson, APRN, CNP, PMHNP-BCDuluth, MN 558051134772072

Common questions

What is Heidi A. Greifzu, APRN, MHNP's NPI number?

Heidi A. Greifzu, APRN, MHNP's National Provider Identifier (NPI) is 1386260370, issued on Jun 25, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Heidi A. Greifzu, APRN, MHNP located?

The NPPES record lists a practice address at 502 E 2ND St, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.

How can I verify Heidi A. Greifzu, APRN, MHNP's license?

NPPES lists Minnesota license number 7587, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity 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.

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.