NPPES file of Aug 9, 2026

Charles J. Heyka, MD

Family Medicine Physician · Oconto, WI

Charles J. Heyka, MD is a family medicine physician with a practice address in Oconto, Wisconsin, and NPI 1083721286, issued on Aug 24, 2006. Check the license (Wisconsin 49636-020, 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
1083721286
Name
Charles J. Heyka
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
49636-020 WI
Self-reported in NPPES; status is on the state search
Practice location
820 Arbutus Ave, Oconto, WI 54153
Phone
(920) 835-1100
Enumerated
Aug 24, 2006
Record last updated
Sep 20, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(920) 835-1099
Medicare enrollment
Enrolled (PECOS I20060921000251); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 1981
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.
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Also registered at 820 Arbutus Ave

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

  1. Lindsey Baade, APNPFamily Nurse Practitioner1043599194
  2. Michael Brenner, M.D.Family Medicine Physician1659781441
  3. Jac Clement, PA-CPhysician Assistant1649289778
  4. Mark Dittloff, MS, LPCProfessional Counselor1194965590
  5. Lori Eklund Walsh, LCSW,LPC,SACClinical Social Worker1457425951
  6. Kirstin Filkey, RDHDental Hygienist1063739001

Verify Charles J. Heyka in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 49636-020
    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.

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86% fewer Medicare Part D claims than the average family medicine physician in 2024

510 Medicare Part D claims for 102 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 21 claims were for opioids.

  1. Charles Heyka510
  2. Specialty average3,544

Most prescribed

  1. Potassium Chloride42 claims
  2. Furosemide26 claims
  3. Gabapentin21 claims
  4. Atorvastatin Calcium17 claims
  5. Metoprolol Tartrate16 claims
  6. Prednisone16 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 2 group practices

  1. Bellin Memorial Hospital IncGreen Bay, WI
  2. Oconto Hospital And Medical Center IncMarinette, WI

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

Charles J. Heyka among 3,765 family medicine physician records in Wisconsin

Charles J. Heyka, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1981 · median 2007 among the 2,347 with a school on file
  • Record last updated2019 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 family medicine physician records list a practice address in Oconto

They are 5 of the 76 NPPES records with a practice address in Oconto, and 3,765 family medicine physician records in Wisconsin.

The 8 family medicine physician records with the nearest ZIP codes

  1. Michael Brenner, M.D.Oconto, WI 541531659781441
  2. John Honish, MDOconto, WI 541531255364543
  3. Thomas Knutson, MDOconto, WI 541531760462352
  4. Elizabeth Russell, M.D.Oconto, WI 541531851301253
  5. Matthew Andreoli, MDOconto Falls, WI 541541538621917
  6. Luz Balmadrid, M.D.Oconto Falls, WI 541541477532943
  7. Lucy Canaday, MDOconto Falls, WI 541541811958028
  8. Iris Theodora Perez-Marquardt, M.DOconto Falls, WI 541541306825872

Common questions

What is Charles J. Heyka, MD's NPI number?

Charles J. Heyka, MD's National Provider Identifier (NPI) is 1083721286, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Charles J. Heyka, MD located?

The NPPES record lists a practice address at 820 Arbutus Ave, Oconto, WI, 54153. Phone: (920) 835-1100. Providers update this record themselves, so call before visiting.

How can I verify Charles J. Heyka, MD's license?

NPPES lists Wisconsin license number 49636-020, 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 Charles J. Heyka, MD prescribe under Medicare Part D?

In 2024, Charles J. Heyka, MD had 510 Medicare Part D claims for 102 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.