Rachel Gronau, MD
NPI 1326227323 · Family Medicine Physician · Delavan, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Gronau, MD is a Family Medicine Physician provider in Delavan, WI (NPI 1326227323).
Provider details
- NPI number
- 1326227323
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 50149 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
1,079 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 | 453 | $92 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 250 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 122 | $63 |
| 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 | 103 | $16 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 72 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 133 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 499 | 157 |
| Levothyroxine Sodium | 452 | 134 |
| Amlodipine Besylate | 315 | 99 |
| Rosuvastatin Calcium | 314 | 103 |
| Losartan Potassium | 294 | 90 |
| Hydrochlorothiazide | 205 | 69 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-10-26
- Last updated
- 2010-06-14
Frequently asked questions
- What is Rachel Gronau's NPI number?
- Rachel Gronau's National Provider Identifier (NPI) is 1326227323, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Gronau's specialty?
- Rachel Gronau is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rachel Gronau located?
- Rachel Gronau's practice location on file with NPPES is 1038 E Geneva St, Delavan, WI 53115-1921.
- What is Rachel Gronau's phone number?
- The practice phone number listed in the NPPES registry for Rachel Gronau is (262) 740-0681.
- Does Rachel Gronau accept Medicare?
- Rachel Gronau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Gronau's NPI active?
- Yes — Rachel Gronau's NPI (1326227323) is active in the NPPES registry as of the last update on 2010-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.