NPPES file of Aug 9, 2026

Joseph T. Chojnacki, PHD

Psychologist · Marshfield, WI

Joseph T. Chojnacki, PHD is a psychologist with a practice address in Marshfield, Wisconsin, and NPI 1033211719, issued on Sep 2, 2006. Check the license (Wisconsin 1955, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033211719
Name
Joseph T. Chojnacki
Credential
PHD
Primary taxonomy
Psychologist 103T00000X
License number
1955 WI
Self-reported in NPPES; status is on the state search
Practice location
1000 N Oak Ave, Marshfield, WI 54449
Phone
(715) 387-5445
Enumerated
Sep 2, 2006
Record last updated
Apr 5, 2024
Medicaid ID
39115700 WI
Medicare enrollment
Enrolled (PECOS I20100618000725); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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.
Download card Updates feed

Also registered at 1000 N Oak Ave

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

  1. Sheetal Aatrai, MDInternal Medicine Physician1417568965
  2. Sukaina AbbasPediatrics Physician1407529191
  3. Chady Abboud Leon, M.D.Hematology & Oncology Physician1770737744
  4. Ihab Abdalrahman, MDHospitalist Physician1497855134
  5. Raquel Abengozar Mingorance, MDStudent in an Organized Health Care Education/Training Program1609437755
  6. Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574

Verify Joseph T. Chojnacki in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 1955
    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
Find 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

The practice group's MIPS final score for 2023 (Medicare payment program): 78.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score66.7
  2. Costout of 100 · 30%54.9
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Mchs Hospitals IncMarshfield, WI

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

19 psychologist records list a practice address in Marshfield

They are 19 of the 1,360 NPPES records with a practice address in Marshfield, and 949 psychologist records in Wisconsin.

Other psychologist records in Wisconsin

  1. Heather Abercrombie, PHDMadison, WI1275509333
  2. Craig Abrams, PHDSheboygan, WI1750367116
  3. Michael Accardo, PHD, LPMiddleton, WI1396417366
  4. Marc Ackerman, PHDGlendale, WI1972687358
  5. Duncan Adams, PHDSheboygan, WI1881602423
  6. Noah Adrians, PH. D.Milwaukee, WI1487934683
  7. Ali Al-Humadi, PSYDGreen Bay, WI1427567684
  8. Kevin Allemagne, PH.D.Fitchburg, WI1437291705
  9. Carmen Alonso, PHDMadison, WI1154478717
  10. Thomas Altepeter, PH.D.Oshkosh, WI1871501452

Common questions

What is Joseph T. Chojnacki, PHD's NPI number?

Joseph T. Chojnacki, PHD's National Provider Identifier (NPI) is 1033211719, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joseph T. Chojnacki, PHD located?

The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5445. Providers update this record themselves, so call before visiting.

How can I verify Joseph T. Chojnacki, PHD's license?

NPPES lists Wisconsin license number 1955, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

What is Joseph T. Chojnacki, PHD's MIPS final score?

The 2023 MIPS final score is 78.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.