NPPES file of Aug 9, 2026

Michael J. Stiennon

Diagnostic Radiology Physician · Oconto Falls, WI

Michael J. Stiennon is a diagnostic radiology physician with a practice address in Oconto Falls, Wisconsin, and NPI 1134144397, issued on Jul 12, 2006. Check the license (Wisconsin 21088-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134144397
Name
Michael J. Stiennon
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
21088-20 WI
Self-reported in NPPES; status is on the state search
Practice location
855 S Main St, Oconto Falls, WI 54154
Phone
(920) 846-3444
Enumerated
Jul 12, 2006
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
30784900 WI
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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8 nearest diagnostic radiology physician records → All 1,005 in Wisconsin → Look up another NPI →

Also registered at 855 S Main St

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

  1. Tiffany AlsonPhysical Therapy Assistant1194999821
  2. Erin Bancroft, APNPNurse Practitioner1013455252
  3. John Coates, M.D.Emergency Medicine Physician1184646382
  4. Heidi Cole, PHARMDPharmacist1992002174
  5. Terri Dama, PTPhysical Therapist1811135338
  6. Rebecca Decker, PTAPhysical Therapy Assistant1699934901

Verify Michael J. Stiennon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 21088-20    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

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Michael J. Stiennon among 1,005 diagnostic radiology physician records in Wisconsin

Michael J. Stiennon is one of 1,005 diagnostic radiology physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 48% newer
  • In a Medicare fileNo · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2007 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 diagnostic radiology physician records list a practice address in Oconto Falls

They are 2 of the 101 NPPES records with a practice address in Oconto Falls, and 1,005 diagnostic radiology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,005 in Wisconsin → Every provider in Oconto Falls → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Oscar Stiennon, M.D.Oconto Falls, WI 541541164431474
  2. Robert Dizor, MDMarinette, WI 541431205941408
  3. Michael Shanks, M.D.Marinette, WI 541431619906930
  4. Matthew Koeberl, M.D.Manitowoc, WI 542201396975165
  5. Stephen Dudek, MDManitowoc, WI 542211790710952
  6. Thomas Keller, MDManitowoc, WI 542211992720569
  7. Todd Schroeder, MDManitowoc, WI 542211982639142
  8. Kurt Harris, MDSturgeon Bay, WI 542351902859721

Common questions

What is Michael J. Stiennon's NPI number?

Michael J. Stiennon's National Provider Identifier (NPI) is 1134144397, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael J. Stiennon located?

The NPPES record lists a practice address at 855 S Main St, Oconto Falls, WI, 54154. Phone: (920) 846-3444. Providers update this record themselves, so call before visiting.

How can I verify Michael J. Stiennon's license?

NPPES lists Wisconsin license number 21088-20, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (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 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.