Irene A. Gielen, FNP
Family Nurse Practitioner · Portland, OR
Irene A. Gielen, FNP is a family nurse practitioner with a practice address in Portland, Oregon, and NPI 1912549627, issued on Oct 14, 2019. Check the license (Oregon 202202457NP-PP, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Irene A. Gielen
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 202202457NP-PP OR
Self-reported in NPPES; status is on the state search - Practice location
- 4805 NE Glisan St Ste 6N60, Portland, OR 97213
- Phone
- (503) 281-0561
- Enumerated
- Oct 14, 2019
- Record last updated
- Jun 9, 2026
- Fax
- (503) 416-7377
- Medicaid ID
- 500805038 OR
- Medicare enrollment
- Enrolled (PECOS I20231215001671); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,384 in Oregon → Look up another NPI →
Also registered at 4805 NE Glisan St Ste 6N60
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Irene A. Gielen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 202202457NP-PPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,286 Medicare Part D claims for 316 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 95 claims were for opioids.
Most prescribed
- Omeprazole49 claims
- Losartan Potassium48 claims
- Amlodipine Besylate44 claims
- Levothyroxine Sodium39 claims
- Atorvastatin Calcium38 claims
- Rosuvastatin Calcium38 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
- The Vancouver Clinic Inc PSBattle Ground, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irene A. Gielen among 2,384 family nurse practitioner records in Oregon
Irene A. Gielen, FNP is one of 2,384 family nurse practitioner records with a practice address in Oregon. 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 2019, is newer than 68% of them.
- NPI issued2019 · 68% of these records are older, 27% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2021 · median 2017 among the 1,390 with a school on file
- Record last updated2026 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
591 family nurse practitioner records list a practice address in Portland
They are 591 of the 42,088 NPPES records with a practice address in Portland, and 2,384 family nurse practitioner records in Oregon.
All 2,384 in Oregon → Every provider in Portland → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Liana Corliss, N.P.Portland, OR 972131952376451
- Lyn Dobrunick, FNPPortland, OR 972131013909142
- Melissa Federspiel, FNPPortland, OR 972131881676641
- Dennis Grey, F.N.P.Portland, OR 972131851303291
- Roxanne Griswold, FNPPortland, OR 972131205828936
- Caryl Kenworth, M.S.N., F.N.P.Portland, OR 972131396757662
- Melissa Kilian, FNPPortland, OR 972131821054024
- Daniel Leone, NP-CPortland, OR 972131962559112
Common questions
What is Irene A. Gielen, FNP's NPI number?
Irene A. Gielen, FNP's National Provider Identifier (NPI) is 1912549627, issued on Oct 14, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Irene A. Gielen, FNP located?
The NPPES record lists a practice address at 4805 NE Glisan St Ste 6N60, Portland, OR, 97213. Phone: (503) 281-0561. Providers update this record themselves, so call before visiting.
How can I verify Irene A. Gielen, FNP's license?
NPPES lists Oregon license number 202202457NP-PP, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Irene A. Gielen, FNP prescribe under Medicare Part D?
In 2024, Irene A. Gielen, FNP had 1,286 Medicare Part D claims for 316 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.