NPPES file of Aug 9, 2026

Marshall John Bales, M.D.

Forensic Psychiatry Physician · Winnebago, WI

Marshall John Bales, M.D. is a forensic psychiatry physician with a practice address in Winnebago, Wisconsin, and NPI 1467494211, issued on Jun 12, 2006. Check the license (Wisconsin 31871, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467494211
Name
Marshall John Bales
Credential
M.D.
Primary taxonomy
Forensic Psychiatry Physician 2084F0202X
License numbers
31871 WI
04-23919 KS
Self-reported in NPPES; status is on the state search
Practice location
1300 South Drive, Winnebago, WI 54985
Phone
(920) 235-4910
Enumerated
Jun 12, 2006
Record last updated
Apr 7, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(920) 237-2043
Medicare enrollment
Enrolled (PECOS I20090630000224); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 1985
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1300 South Drive

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

  1. Kent Berney, PHDPsychologist1962626317
  2. Charlene CainPsychiatric/Mental Health Nurse Practitioner1487257150
  3. Christine Carriere, APNPNurse Practitioner1548630320
  4. Jesse Childs, PA-CMedical Physician Assistant1104289099
  5. Alejandro Eisma, MDInternal Medicine Physician1225026990
  6. Louis Fulton, MDChild & Adolescent Psychiatry Physician1093702383

Verify Marshall John Bales in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 31871    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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9.2 times the Medicare Part D claims of the average forensic psychiatry physician in 2024

7,418 Medicare Part D claims for 267 beneficiaries, against an average of 803 among the 199 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Marshall Bales7,418
  2. Specialty average803

Most prescribed

  1. Quetiapine Fumarate626 claims
  2. Haloperidol394 claims
  3. Lorazepam389 claims
  4. Risperidone387 claims
  5. Benztropine Mesylate379 claims
  6. Olanzapine377 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 one group practice

  1. County OF OutagamieAppleton, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

1 forensic psychiatry physician records list a practice address in Winnebago

They are 1 of the 63 NPPES records with a practice address in Winnebago, and 9 forensic psychiatry physician records in Wisconsin.

All 9 in Wisconsin → Every provider in Winnebago →

Other forensic psychiatry physician records in Wisconsin

  1. Jerrold Adkins, DOMadison, WI1548271844
  2. Colleen Considine, M.D.Madison, WI1073048955
  3. Kevin Kallas, M.D.Madison, WI1972647527
  4. Erik Knudson, M.D.Madison, WI1720022700
  5. Gary Maier, M.D.Madison, WI1730106311
  6. Barbara Murray, MDBurlington, WI1407963820
  7. John Pankiewicz, M.D.Milwaukee, WI1023142064
  8. Laurence Trueman, M.D.Monroe, WI1881629988

Common questions

What is Marshall John Bales, M.D.'s NPI number?

Marshall John Bales, M.D.'s National Provider Identifier (NPI) is 1467494211, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marshall John Bales, M.D. located?

The NPPES record lists a practice address at 1300 South Drive, Winnebago, WI, 54985. Phone: (920) 235-4910. Providers update this record themselves, so call before visiting.

How can I verify Marshall John Bales, M.D.'s license?

NPPES lists Wisconsin license number 31871, 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 Marshall John Bales, M.D. prescribe under Medicare Part D?

In 2024, Marshall John Bales, M.D. had 7,418 Medicare Part D claims for 267 beneficiaries; the average among forensic psychiatry physician prescribers was 803. 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.

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.