Irene Gielen, FNP
NPI 1912549627 · Family Nurse Practitioner · Portland, OR
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irene Gielen, FNP is a Family Nurse Practitioner provider in Portland, OR (NPI 1912549627).
Provider details
- NPI number
- 1912549627
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 202202457NP-PP (OR)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
98 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $109 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 30 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 19 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 18 | $7 |
Typical Medicare-allowed amounts for these services range $7–$109 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 49 | 27 |
| Losartan Potassium | 48 | 26 |
| Amlodipine Besylate | 44 | 19 |
| Levothyroxine Sodium | 39 | 21 |
| Atorvastatin Calcium | 38 | 17 |
| Rosuvastatin Calcium | 38 | 20 |
| Lisinopril |
Practice location
Mailing address
Additional practice locations (1)
- 9155 Sw Barnes Rd Ste 735Portland, OR 97225-6634Phone: (503) 281-0561Fax: (503) 416-7377
Registry dates
- Enumerated
- 2019-10-14
- Last updated
- 2022-04-28
- Certified
- 2022-04-28
Frequently asked questions
- What is Irene Gielen's NPI number?
- Irene Gielen's National Provider Identifier (NPI) is 1912549627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irene Gielen's specialty?
- Irene Gielen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Irene Gielen located?
- Irene Gielen's practice location on file with NPPES is 4805 Ne Glisan St Ste 6n60, Portland, OR 97213-2933.
- What is Irene Gielen's phone number?
- The practice phone number listed in the NPPES registry for Irene Gielen is (503) 281-0561.
- Does Irene Gielen accept Medicare?
- Irene Gielen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irene Gielen's NPI active?
- Yes — Irene Gielen's NPI (1912549627) is active in the NPPES registry as of the last update on 2022-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.