Christopher J. Magiera, M.D.
Gastroenterology Physician · Oshkosh, WI
Christopher J. Magiera, M.D. is a gastroenterology physician with a practice address in Oshkosh, Wisconsin, and NPI 1548334550, issued on Nov 20, 2006. Check the license (Wisconsin 45086, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Christopher J. Magiera
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 45086 WI
01056619A IN
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 303-8700
- Enumerated
- Nov 20, 2006
- Record last updated
- Oct 7, 2025
- Medicaid IDs
- 34308400 WI
201064770 IN - Medicare enrollment
- Enrolled (PECOS I20071217000637); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 340 in Wisconsin → Look up another NPI →
Also registered at 855 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rami Abumasmah, MDHematology & Oncology Physician1972779551
- Abdulmajid AdamHospitalist Physician1528362258
- Awais Ahmed, MDGastroenterology Physician1316213481
- Kate Alexander, PA-CPhysician Assistant1700466414
- Hussein Alramini, M.D.Hospitalist Physician1497106512
- Ammar Alzoubi, MDInternal Medicine Physician1598773152
Verify Christopher J. Magiera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45086Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average gastroenterology physician in 2024
746 Medicare Part D claims for 181 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Pantoprazole Sodium200 claims
- Sucralfate66 claims
- Omeprazole61 claims
- Linzess32 claims
- Budesonide Dr29 claims
- Famotidine24 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.
Christopher J. Magiera among 340 gastroenterology physician records in Wisconsin
Christopher J. Magiera, M.D. is one of 340 gastroenterology physician records with a practice address in Wisconsin. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1982 · median 2003 among the 239 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Wisconsin
There are 340 gastroenterology physician records in Wisconsin.
All 340 in Wisconsin → Every provider in Oshkosh → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Awais Ahmed, MDOshkosh, WI 549041316213481
- Jeffrey Andreini, MDOshkosh, WI 549041235266735
- Amir Butt, M.D.Oshkosh, WI 549041205931144
- Mary McDonald, MDOshkosh, WI 549041699789396
- Bennett Pastika, DOOshkosh, WI 549041467448977
- Timothy Roarty, MDAppleton, WI 549111437226529
- Suhasini Turlapati, MDAppleton, WI 549111992805832
- Jerry Evans, MDFond Du Lac, WI 549351376534941
Common questions
What is Christopher J. Magiera, M.D.'s NPI number?
Christopher J. Magiera, M.D.'s National Provider Identifier (NPI) is 1548334550, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher J. Magiera, M.D. located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 303-8700. Providers update this record themselves, so call before visiting.
How can I verify Christopher J. Magiera, M.D.'s license?
NPPES lists Wisconsin license number 45086, 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 Christopher J. Magiera, M.D. prescribe under Medicare Part D?
In 2024, Christopher J. Magiera, M.D. had 746 Medicare Part D claims for 181 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.