Registry data as of Aug 27, 2026

William Blosky, M.D.

Gastroenterology Physician · Milwaukee, WI

William Blosky, M.D. is a gastroenterology physician with a practice address in Milwaukee, Wisconsin, and NPI 1740506195, issued on Apr 9, 2010. Check the license (Wisconsin 65262-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1740506195
Name
William Blosky
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
65262-20 WI
121652 OH
Self-reported in NPPES; status is on the state search
Practice location
2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, WI 53215
Phone
(414) 908-6506
Enumerated
Apr 9, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2801 W Kinnickinnic River Pkwy Ste 1080

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alison Baierl, PA-CMedical Physician Assistant1831530575
  2. Katie Balderas, PA-CPhysician Assistant1497184279
  3. Aaron Baltz, MDGastroenterology Physician1467499277
  4. Fabiola Boche, PA-CMedical Physician Assistant1265661847
  5. Tedd Cain, MDGastroenterology Physician1750358115
  6. David Carron, MDGastroenterology Physician1023085487

Verify William Blosky in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 65262-20    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

2.0 times the Medicare Part D claims of the average gastroenterology physician in 2024

1,625 Medicare Part D claims for 679 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. William Blosky1,625
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium409 claims
  2. Omeprazole222 claims
  3. Sod Sulf-Potass Sulf-Mag Sulf178 claims
  4. Gavilyte-G167 claims
  5. Peg-3350 And Electrolytes68 claims
  6. Budesonide Dr62 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.

Bills Medicare through 3 group practices

  1. Gastroenterology Specialists SCWauwatosa, WI
  2. GI Associates LLCMilwaukee, WI
  3. Milwaukee GI Specialists SCWauwatosa, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Gastroenterology Physician providers in Wisconsin

There are 340 gastroenterology physician records in Wisconsin.

All 340 in Wisconsin → Every provider in Milwaukee →

Other gastroenterology physician records in Wisconsin

  1. Frank Aberger, MDLa Crosse, WI1396748711
  2. Mohammad Abuassi, M.D.Milwaukee, WI1275211567
  3. Kwabena Adu-Gyamfi, MDGreen Bay, WI1154677391
  4. Aboud Affi, M.D.Milwaukee, WI1003891250
  5. Dilpesh Agrawal, M.D, MRCPMilwaukee, WI1407134422
  6. Awais Ahmed, MDOshkosh, WI1316213481
  7. Trupti Akella, M.D.New Berlin, WI1215321690
  8. Adebisi Alimi, M.D.Sheboygan, WI1649599317
  9. Jihad Aljabban, MD, MMSCMadison, WI1699304808
  10. Michael Allan, MDMadison, WI1558300822

Common questions

What is William Blosky, M.D.'s NPI number?

William Blosky, M.D.'s National Provider Identifier (NPI) is 1740506195, issued on Apr 9, 2010. An NPI identifies a provider in billing; it is not a license.

Where is William Blosky, M.D. located?

The NPPES record lists a practice address at 2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, WI, 53215. Phone: (414) 908-6506. Providers update this record themselves, so call before visiting.

How can I verify William Blosky, M.D.'s license?

NPPES lists Wisconsin license number 65262-20, 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 Blosky, M.D. prescribe under Medicare Part D?

In 2024, William Blosky, M.D. had 1,625 Medicare Part D claims for 679 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Built from the named public files by PlainDoctor's data pipeline (how it is made).

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) 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 27, 2026.