Rachel Ruth Grenier, ARNP, DNP
Family Medicine Physician · Pella, IA
Rachel Ruth Grenier, ARNP, DNP is a family medicine physician with a practice address in Pella, Iowa, and NPI 1386370443, issued on Jul 29, 2022. Check the license (Iowa A170258, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Rachel Ruth Grenier
- Credential
- ARNP, DNP
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A170258 IA
Self-reported in NPPES; status is on the state search - Practice location
- 450 Monroe St, Pella, IA 50219
- Phone
- (641) 621-2200
- Enumerated
- Jul 29, 2022
- Record last updated
- Oct 24, 2025
- Fax
- (641) 621-2654
- Medicaid ID
- 1407836513 IA
- Medicare enrollment
- Enrolled (PECOS I20240215003250); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Verify Rachel Ruth Grenier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license A170258Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average family medicine physician in 2024
917 Medicare Part D claims for 160 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 40 claims were for opioids.
Most prescribed
- Omeprazole71 claims
- Atorvastatin Calcium50 claims
- Levothyroxine Sodium48 claims
- Metformin Hcl Er40 claims
- Amlodipine Besylate28 claims
- Metformin Hcl25 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.
2 hospitals and group practices
- Pella Regional Health CenterPrairie City, IA · Critical Access Hospitals4 of 5 stars
- Haus Therapy ServicesAnkeny, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Rachel Ruth Grenier among 2,336 family medicine physician records in Iowa
Rachel Ruth Grenier, ARNP, DNP is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 89% of them.
- NPI issued2022 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2022 · median 2006 among the 1,367 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 family medicine physician records list a practice address in Pella
They are 20 of the 318 NPPES records with a practice address in Pella, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Pella → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mitchell Blom, D.O.Pella, IA 502191558341917
- Valerie Bonnett, M.D.Pella, IA 502191023097912
- Spencer Carlstone, MDPella, IA 502191629055678
- Danielle Clark, D.O.Pella, IA 502191134109507
- Rebecca Dykstra, D.O.Pella, IA 502191619358694
- Robert Dykstra, DOPella, IA 502191073994059
- David Fredrickson, M.D.Pella, IA 502191891765913
- Anne HellbuschPella, IA 502191346214228
Common questions
What is Rachel Ruth Grenier, ARNP, DNP's NPI number?
Rachel Ruth Grenier, ARNP, DNP's National Provider Identifier (NPI) is 1386370443, issued on Jul 29, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Ruth Grenier, ARNP, DNP located?
The NPPES record lists a practice address at 450 Monroe St, Pella, IA, 50219. Phone: (641) 621-2200. Providers update this record themselves, so call before visiting.
How can I verify Rachel Ruth Grenier, ARNP, DNP's license?
NPPES lists Iowa license number A170258, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rachel Ruth Grenier, ARNP, DNP prescribe under Medicare Part D?
In 2024, Rachel Ruth Grenier, ARNP, DNP had 917 Medicare Part D claims for 160 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.