William James Predun, MD
Internal Medicine Physician · Green Bay, WI
William James Predun, MD is an internal medicine physician with a practice address in Green Bay, Wisconsin, and NPI 1457856502, issued on Mar 29, 2018. Check the license (Wisconsin 75630-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William James Predun
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 75630-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 744 S Webster Ave, Green Bay, WI 54301
- Phone
- (917) 593-8973
- Enumerated
- Mar 29, 2018
- Record last updated
- Jul 17, 2026
- Medicare enrollment
- Enrolled (PECOS I20220418002372); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 744 S Webster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William James Predun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 75630-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
352 Medicare Part D claims for 136 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 26 claims were for opioids.
Most prescribed
- Prednisone28 claims
- Azithromycin21 claims
- Pantoprazole Sodium21 claims
- Oxycodone Hcl20 claims
- Cefpodoxime Proxetil15 claims
- Albuterol Sulfate Hfa14 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.
Industry payments in 2024: $36.06
1 payment: food and beverage; the largest payer was Ceribell, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Apogee Medical Group IncLake Havasu City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William James Predun among 2,078 internal medicine physician records in Wisconsin
William James Predun, 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 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2002 among the 1,098 with a school on file
- Record last updated2026 · 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).
69 internal medicine physician records list a practice address in Green Bay
They are 69 of the 4,619 NPPES records with a practice address in Green Bay, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Green Bay → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mazen Alkhalisy, MDGreen Bay, WI 543011417931106
- R Davis, MDGreen Bay, WI 543011366455503
- Richard Erdman, M.D.Green Bay, WI 543011326090697
- Jason Hoppe, MDGreen Bay, WI 543011508899899
- Janet Johnson, MDGreen Bay, WI 543011346266145
- Inderjote Kathuria, M.D.Green Bay, WI 543011689786311
- Lee Klemens, MDGreen Bay, WI 543011023092715
- Francis Lee, DOGreen Bay, WI 543011073598322
Common questions
What is William James Predun, MD's NPI number?
William James Predun, MD's National Provider Identifier (NPI) is 1457856502, issued on Mar 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is William James Predun, MD located?
The NPPES record lists a practice address at 744 S Webster Ave, Green Bay, WI, 54301. Phone: (917) 593-8973. Providers update this record themselves, so call before visiting.
How can I verify William James Predun, MD's license?
NPPES lists Wisconsin license number 75630-20, 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 William James Predun, MD prescribe under Medicare Part D?
In 2024, William James Predun, MD had 352 Medicare Part D claims for 136 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.