Rachel Tara Joy Gronau, MD
Family Medicine Physician · Delavan, WI
Rachel Tara Joy Gronau, MD is a family medicine physician with a practice address in Delavan, Wisconsin, and NPI 1326227323, issued on Oct 26, 2007. Check the license (Wisconsin 50149, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Rachel Tara Joy Gronau
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 50149 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1038 E Geneva St, Delavan, WI 53115
- Phone
- (262) 740-0681
- Enumerated
- Oct 26, 2007
- Record last updated
- Jun 14, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (262) 740-0776
- Medicare enrollment
- Enrolled (PECOS I20080905000443); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2005
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 1038 E Geneva St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Wang, APRN, FNPFamily Nurse Practitioner1689000911
Verify Rachel Tara Joy Gronau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 50149Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,199 Medicare Part D claims for 695 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 111 claims were for opioids.
Most prescribed
- Atorvastatin Calcium499 claims
- Levothyroxine Sodium452 claims
- Amlodipine Besylate315 claims
- Rosuvastatin Calcium314 claims
- Losartan Potassium294 claims
- Hydrochlorothiazide205 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.
Bills Medicare through one group practice
- Mercy Health System CorporationDelavan, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachel Tara Joy Gronau among 3,765 family medicine physician records in Wisconsin
Rachel Tara Joy Gronau, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 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 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 41% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2005 · median 2007 among the 2,347 with a school on file
- Record last updated2010 · 56% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Delavan
They are 9 of the 137 NPPES records with a practice address in Delavan, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Delavan → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kurt Brueckert, MDDelavan, WI 531151114936820
- Michael Fehling, MDDelavan, WI 531151528173663
- Javier Gallegos, M.D.Delavan, WI 531151568819845
- Christopher Gilman, MDDelavan, WI 531151437198736
- Tesalia Jordens, D.O.Delavan, WI 531151750762472
- Julie Lynch, DODelavan, WI 531151598864233
- David Mahon, MDDelavan, WI 531151326155888
- Jamison Utzig, MDDelavan, WI 531151760055578
Common questions
What is Rachel Tara Joy Gronau, MD's NPI number?
Rachel Tara Joy Gronau, MD's National Provider Identifier (NPI) is 1326227323, issued on Oct 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Tara Joy Gronau, MD located?
The NPPES record lists a practice address at 1038 E Geneva St, Delavan, WI, 53115. Phone: (262) 740-0681. Providers update this record themselves, so call before visiting.
How can I verify Rachel Tara Joy Gronau, MD's license?
NPPES lists Wisconsin license number 50149, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rachel Tara Joy Gronau, MD prescribe under Medicare Part D?
In 2024, Rachel Tara Joy Gronau, MD had 8,199 Medicare Part D claims for 695 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.