Casey Michelle Ippen, MD
Emergency Medicine Physician · Milwaukee, WI
Casey Michelle Ippen, MD is an emergency medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1053554642, issued on Apr 12, 2009. Check the license (Wisconsin 55264, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Casey Michelle Ippen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 55264 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 955-6450
- Enumerated
- Apr 12, 2009
- Record last updated
- Mar 25, 2024
- Fax
- (414) 955-0082
- Medicaid ID
- 87325560 CO
- Medicare enrollment
- Enrolled (PECOS I20160407001825); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2009
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 9200 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Casey Michelle Ippen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 55264Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average emergency medicine physician in 2024
159 Medicare Part D claims for 115 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 30 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen21 claims
- Prednisone15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 95 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Casey Michelle Ippen among 1,464 emergency medicine physician records in Wisconsin
Casey Michelle Ippen, MD is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 52% of them.
- NPI issued2009 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2011 among the 844 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
358 emergency medicine physician records list a practice address in Milwaukee
They are 358 of the 18,389 NPPES records with a practice address in Milwaukee, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Milwaukee → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Eric Adar, MDWauwatosa, WI 532261255325726
- Tom Aufderheide, MDMilwaukee, WI 532261336190859
- Charles Cady, MDMilwaukee, WI 532261831140227
- Louis-Marcel Cesar, M.D.Milwaukee, WI 532261235116690
- Mario Colella, D.O.Milwaukee, WI 532261336106277
- Stephen Hargarten, MDMilwaukee, WI 532261760433502
- Manuel Hernandez, M.D.Milwaukee, WI 532261336102540
- Michael Lutes, MDMilwaukee, WI 532261629029475
Common questions
What is Casey Michelle Ippen, MD's NPI number?
Casey Michelle Ippen, MD's National Provider Identifier (NPI) is 1053554642, issued on Apr 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Casey Michelle Ippen, MD located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 955-6450. Providers update this record themselves, so call before visiting.
How can I verify Casey Michelle Ippen, MD's license?
NPPES lists Wisconsin license number 55264, 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 Casey Michelle Ippen, MD prescribe under Medicare Part D?
In 2024, Casey Michelle Ippen, MD had 159 Medicare Part D claims for 115 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Casey Michelle Ippen, MD's MIPS final score?
The 2023 MIPS final score is 95 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.