John Adam Obudzinski, D.O.
Internal Medicine Physician · West Allis, WI
John Adam Obudzinski, D.O. is an internal medicine physician with a practice address in West Allis, Wisconsin, and NPI 1942388434, issued on Nov 1, 2006. Check the license (Wisconsin 21407-021, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Adam Obudzinski
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 21407-021 WI
5101006817 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2424-S. 90TH St., West Allis, WI 53227
- Phone
- (414) 328-8777
- Enumerated
- Nov 1, 2006
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (414) 328-8777
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Verify John Adam Obudzinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 21407-021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average internal medicine physician in 2024
785 Medicare Part D claims for 249 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium75 claims
- Atorvastatin Calcium66 claims
- Lisinopril42 claims
- Amlodipine Besylate37 claims
- Rosuvastatin Calcium35 claims
- Losartan Potassium32 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.
John Adam Obudzinski among 2,078 internal medicine physician records in Wisconsin
John Adam Obudzinski, D.O. 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 updated2021 · 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).
32 internal medicine physician records list a practice address in West Allis
They are 32 of the 1,362 NPPES records with a practice address in West Allis, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in West Allis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Dawson, MDWest Allis, WI 532271992810139
- Kathryn Havens, MDWest Allis, WI 532271164440921
- Harvey Hewes, M.D.West Allis, WI 532271255357554
- Douglas Lillie, MDWest Allis, WI 532271811004369
- Eric Luy, MDWest Allis, WI 532271538110382
- Andrew McDonagh, M.D.West Allis, WI 532271639157449
- Joan Milott, MDWest Allis, WI 532271528010238
- Monica O'Sullivan, MDWest Allis, WI 532271043262546
Common questions
What is John Adam Obudzinski, D.O.'s NPI number?
John Adam Obudzinski, D.O.'s National Provider Identifier (NPI) is 1942388434, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Adam Obudzinski, D.O. located?
The NPPES record lists a practice address at 2424-S. 90TH St., West Allis, WI, 53227. Phone: (414) 328-8777. Providers update this record themselves, so call before visiting.
How can I verify John Adam Obudzinski, D.O.'s license?
NPPES lists Wisconsin license number 21407-021, 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 John Adam Obudzinski, D.O. prescribe under Medicare Part D?
In 2024, John Adam Obudzinski, D.O. had 785 Medicare Part D claims for 249 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.