Barbara A. Horner-Ibler, MD
Internal Medicine Physician · Brookfield, WI
Barbara A. Horner-Ibler, MD is an internal medicine physician with a practice address in Brookfield, Wisconsin, and NPI 1225145840, issued on Aug 23, 2006. Check the license (Wisconsin 42553, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Barbara A. Horner-Ibler
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 42553 WI
204-121 WI
Self-reported in NPPES; status is on the state search - Practice location
- 19035 W Capitol Dr, Brookfield, WI 53045
- Phone
- (262) 754-1421
- Enumerated
- Aug 23, 2006
- Record last updated
- Apr 29, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (262) 754-3760
- Medicaid ID
- 34173200 WI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 19035 W Capitol Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Barbara A. Horner-Ibler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 42553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
384 Medicare Part D claims for 27 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 48 claims were for opioids.
Most prescribed
- Amlodipine Besylate29 claims
- Losartan Potassium20 claims
- Albuterol Sulfate Hfa16 claims
- Atorvastatin Calcium15 claims
- Levothyroxine Sodium14 claims
- Morphine Sulfate Er12 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.
Barbara A. Horner-Ibler among 2,078 internal medicine physician records in Wisconsin
Barbara A. Horner-Ibler, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2016 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Brookfield
They are 39 of the 2,036 NPPES records with a practice address in Brookfield, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Brookfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael CadaBrookfield, WI 530451356529804
- Anna EdlebeckBrookfield, WI 530451073790804
- Patrick Fitzgerald, M.D.Brookfield, WI 530451326010026
- Christopher Lieb, MDBrookfield, WI 530451427071240
- Swarnambal Mani, M.D.Brookfield, WI 530451487844353
- Peter Martin, MDBrookfield, WI 530451730444282
- Mark Obermyer, MDBrookfield, WI 530451669634820
- Andrea Woodard, M.D.Brookfield, WI 530451558448100
Common questions
What is Barbara A. Horner-Ibler, MD's NPI number?
Barbara A. Horner-Ibler, MD's National Provider Identifier (NPI) is 1225145840, issued on Aug 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barbara A. Horner-Ibler, MD located?
The NPPES record lists a practice address at 19035 W Capitol Dr, Brookfield, WI, 53045. Phone: (262) 754-1421. Providers update this record themselves, so call before visiting.
How can I verify Barbara A. Horner-Ibler, MD's license?
NPPES lists Wisconsin license number 42553, 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 Barbara A. Horner-Ibler, MD prescribe under Medicare Part D?
In 2024, Barbara A. Horner-Ibler, MD had 384 Medicare Part D claims for 27 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.