Theresa Hallengren, ARNP-FNP-BC
NPI 1861161267 · Primary Care Nurse Practitioner · Cedar Rapids, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Hallengren, ARNP-FNP-BC is a Primary Care Nurse Practitioner provider in Cedar Rapids, IA (NPI 1861161267).
Provider details
- NPI number
- 1861161267
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP-FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 133979 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
592 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 223 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $101 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 64 | $87 |
| Urinalysis, Manual Test81002 | 42 | $3 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 42 | $16 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Monohydrate | 82 | 78 |
| Prednisone | 73 | 70 |
| Cephalexin | 69 | 69 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 40 | 38 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 23 | 23 |
| Doxycycline Hyclate | 22 | 22 |
| Tizanidine Hcl | 15 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-09-09
- Last updated
- 2021-09-09
- Certified
- 2021-09-03
Frequently asked questions
- What is Theresa Hallengren's NPI number?
- Theresa Hallengren's National Provider Identifier (NPI) is 1861161267, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Hallengren's specialty?
- Theresa Hallengren is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Hallengren located?
- Theresa Hallengren's practice location on file with NPPES is 5264 Council St Ne Ste 100, Cedar Rapids, IA 52402-2499.
- What is Theresa Hallengren's phone number?
- The practice phone number listed in the NPPES registry for Theresa Hallengren is (319) 221-8444.
- Does Theresa Hallengren accept Medicare?
- Theresa Hallengren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Hallengren's NPI active?
- Yes — Theresa Hallengren's NPI (1861161267) is active in the NPPES registry as of the last update on 2021-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.