NPPES file of Aug 9, 2026

Stephen A. Massick, MD

Obstetrics & Gynecology Physician · Fond Du Lac, WI

Stephen A. Massick, MD is an obstetrics & gynecology physician with a practice address in Fond Du Lac, Wisconsin, and NPI 1942282298, issued on Nov 14, 2005. Check the license (Wisconsin 17064, 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
1942282298
Name
Stephen A. Massick
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
17064 WI
Self-reported in NPPES; status is on the state search
Practice location
420 E Division St, Fond Du Lac, WI 54935
Phone
(920) 926-8450
Enumerated
Nov 14, 2005
Record last updated
Jul 13, 2026
Medicaid ID
31075000 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 obstetrics & gynecology physician records → All 796 in Wisconsin → Look up another NPI →

Also registered at 420 E Division St

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

  1. Elizabeth Berenz, FNP-BCFamily Nurse Practitioner1619386885
  2. Melissa Berggren, PA-CPhysician Assistant1639377617
  3. Louann Biddick, NPNurse Practitioner1770566721
  4. Jennifer Bissell, MDFamily Medicine Physician1316146962
  5. Tiffany Boelk, APNPNurse Practitioner1700459690
  6. David Bowman, M.D.Cardiovascular Disease Physician1962492397

Verify Stephen A. Massick in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 17064    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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Stephen A. Massick among 796 obstetrics & gynecology physician records in Wisconsin

Stephen A. Massick, MD is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 60% of these records are
  • Record last updated2026 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Wisconsin

There are 796 obstetrics & gynecology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 796 in Wisconsin → Every provider in Fond Du Lac → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Christina Calvello, MDFond Du Lac, WI 549351104836394
  2. Julie Dejong, MDFond Du Lac, WI 549351174639082
  3. Jackie Luthardt, MDFond Du Lac, WI 549351679156202
  4. Brita McCullough, MDFond Du Lac, WI 549351346490323
  5. Karen Meyer, MDFond Du Lac, WI 549351538141437
  6. Barbara Peschong, MDFond Du Lac, WI 549351790767739
  7. Sara Riegert, MDFond Du Lac, WI 549351013908664
  8. Mary Schultz, MDFond Du Lac, WI 549351265414676

Common questions

What is Stephen A. Massick, MD's NPI number?

Stephen A. Massick, MD's National Provider Identifier (NPI) is 1942282298, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Stephen A. Massick, MD located?

The NPPES record lists a practice address at 420 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 926-8450. Providers update this record themselves, so call before visiting.

How can I verify Stephen A. Massick, MD's license?

NPPES lists Wisconsin license number 17064, 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.