NPPES file of Aug 9, 2026

Stephen J. Zeimantz, NP

Nurse Practitioner · Portland, OR

Stephen J. Zeimantz, NP is a nurse practitioner with a practice address in Portland, Oregon, and NPI 1922001478, issued on May 28, 2005. Check the license (Oregon 201050227NP, as entered in NPPES) with the Oregon board that licenses this profession; 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
1922001478
Name
Stephen J. Zeimantz
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License numbers
201050227NP OR
C-APN.0104929-C-NP CO
NP-674A ID
Self-reported in NPPES; status is on the state search
Practice location
20 N Skidmore St, Portland, OR 97217
Phone
(888) 663-6331
Enumerated
May 28, 2005
Record last updated
May 21, 2026
Fax
(415) 252-7176
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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8 nearest nurse practitioner records → All 599 in Oregon → Look up another NPI →

Also registered at 20 N Skidmore St

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

  1. Mary Frances Lowdermilk, M.D.Family Medicine Physician1245453315
  2. Jamie Owens, FNP-CFamily Nurse Practitioner1740696160
  3. Nadia Reinhart-McMillan, D.O.Family Medicine Physician1750813507
  4. Jonathan Shie, MDFamily Medicine Physician1619322393

Verify Stephen J. Zeimantz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license 201050227NP    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 Oregon license search

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40% fewer Medicare Part D claims than the average nurse practitioner in 2024

664 Medicare Part D claims for 262 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Stephen Zeimantz664
  2. Specialty average1,109

Most prescribed

  1. Trazodone Hcl38 claims
  2. Atorvastatin Calcium27 claims
  3. Effexor Xr24 claims
  4. Alprazolam19 claims
  5. Lisinopril19 claims
  6. Rosuvastatin Calcium19 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.

Stephen J. Zeimantz among 599 nurse practitioner records in Oregon

Stephen J. Zeimantz, NP is one of 599 nurse practitioner records with a practice address in Oregon. 72% 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, 95% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileNo · 56% of these records are
  • Record last updated2026 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Oregon

There are 599 nurse practitioner records in Oregon.

All 599 in Oregon → Every provider in Portland → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Christopher Aichele, ARNPPortland, OR 972171669621611
  2. Morry Anotta, DNPPortland, OR 972181932460631
  3. Michael Blankenship, A.P.R.N., P.M.H.N.P.Portland, OR 972161083942825
  4. Coisha GrahamPortland, OR 972161740965250
  5. Bonnie Kittleson, FNPPortland, OR 972161851394464
  6. Savvy Louie, NPPortland, OR 972161447968607
  7. Marilyn Mendoza, NPPortland, OR 972161326009622
  8. Ellerey Nelson, NURSE PRACTITIONERPortland, OR 972161073185815

Common questions

What is Stephen J. Zeimantz, NP's NPI number?

Stephen J. Zeimantz, NP's National Provider Identifier (NPI) is 1922001478, issued on May 28, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Stephen J. Zeimantz, NP located?

The NPPES record lists a practice address at 20 N Skidmore St, Portland, OR, 97217. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.

How can I verify Stephen J. Zeimantz, NP's license?

NPPES lists Oregon license number 201050227NP, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

How much does Stephen J. Zeimantz, NP prescribe under Medicare Part D?

In 2024, Stephen J. Zeimantz, NP had 664 Medicare Part D claims for 262 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.

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.