Rhian Gronewold, ARNP-BC
NPI 1912374141 · Family Nurse Practitioner · Waterloo, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rhian Gronewold, ARNP-BC is a Family Nurse Practitioner provider in Waterloo, IA (NPI 1912374141).
Provider details
- NPI number
- 1912374141
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- A135130 (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
3,528 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,303 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 645 | $72 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 467 | $42 |
| Destruction of Skin Growth, 1-14 Growths17110 | 439 | $88 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 360 | $45 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 101 | 70 |
| Clobetasol Propionate | 84 | 46 |
| Triamcinolone Acetonide | 69 | 45 |
| Fluocinonide | 38 | 20 |
| Valacyclovir Hclbrand: Valacyclovir | 31 | 14 |
| Cephalexin | 25 | 17 |
| Apremilastbrand: Otezla | 23 | — |
| Fluticasone Propionate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$36 across 2 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
- 2015-08-24
- Last updated
- 2017-01-28
Frequently asked questions
- What is Rhian Gronewold's NPI number?
- Rhian Gronewold's National Provider Identifier (NPI) is 1912374141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rhian Gronewold's specialty?
- Rhian Gronewold is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rhian Gronewold located?
- Rhian Gronewold's practice location on file with NPPES is 3812 Pheasant Ln, Waterloo, IA 50701-5200.
- What is Rhian Gronewold's phone number?
- The practice phone number listed in the NPPES registry for Rhian Gronewold is (319) 236-3444.
- Does Rhian Gronewold accept Medicare?
- Rhian Gronewold is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rhian Gronewold's NPI active?
- Yes — Rhian Gronewold's NPI (1912374141) is active in the NPPES registry as of the last update on 2017-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.