Mattie Testroet, ARNP
NPI 1356723399 · Nurse Practitioner · Waterloo, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mattie Testroet, ARNP is a Nurse Practitioner provider in Waterloo, IA (NPI 1356723399).
Provider details
- NPI number
- 1356723399
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- A122571 (IA)
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 tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,244 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 548 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 493 | $76 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 141 | $52 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 51 | $113 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 11 | $104 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 202 | 71 |
| Letrozole | 166 | 50 |
| Hydroxyurea | 149 | 28 |
| Tamoxifen Citrate | 110 | 33 |
| Prednisone | 76 | 33 |
| Acyclovir | 53 | 14 |
| Abiraterone Acetate | 51 | — |
| Gabapentin | 50 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$226 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-26
- Last updated
- 2025-05-13
- Certified
- 2025-05-13
Frequently asked questions
- What is Mattie Testroet's NPI number?
- Mattie Testroet's National Provider Identifier (NPI) is 1356723399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mattie Testroet's specialty?
- Mattie Testroet is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mattie Testroet located?
- Mattie Testroet's practice location on file with NPPES is 3530 W 4th St, Waterloo, IA 50701-4503.
- What is Mattie Testroet's phone number?
- The practice phone number listed in the NPPES registry for Mattie Testroet is (319) 233-2701.
- Does Mattie Testroet accept Medicare?
- Mattie Testroet is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mattie Testroet's NPI active?
- Yes — Mattie Testroet's NPI (1356723399) is active in the NPPES registry as of the last update on 2025-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.