NPPES file of Aug 9, 2026

William L. Hall, M.D.

Family Medicine Physician · Port Washington, WI

William L. Hall, M.D. is a family medicine physician with a practice address in Port Washington, Wisconsin, and NPI 1992747091, issued on Jun 12, 2006. Check the license (Wisconsin 36941, 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
1992747091
Name
William L. Hall
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
36941 WI
Self-reported in NPPES; status is on the state search
Practice location
115 Sweetwater Blvd, Port Washington, WI 53074
Phone
(920) 476-6400
Enumerated
Jun 12, 2006
Record last updated
Oct 14, 2022
Medicaid ID
1992747091 WI
Medicare enrollment
Enrolled (PECOS I20070828000475); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1994
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 115 Sweetwater Blvd

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

  1. Michael Martella, D.O.Family Medicine Physician1194849398

Verify William L. Hall in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 36941
    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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8% fewer Medicare Part D claims than the average family medicine physician in 2024

3,251 Medicare Part D claims for 385 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 81 claims were for opioids.

  1. William Hall3,251
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium244 claims
  2. Amlodipine Besylate167 claims
  3. Levothyroxine Sodium124 claims
  4. Lisinopril96 claims
  5. Omeprazole87 claims
  6. Rosuvastatin Calcium85 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. Froedtert Andthe Medical College OF Wisconsin Community Physicians IncWauwatosa, WI

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

William L. Hall among 3,765 family medicine physician records in Wisconsin

William L. Hall, M.D. 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
  • Graduated1994 · median 2007 among the 2,347 with a school on file
  • Record last updated2022 · 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).

13 family medicine physician records list a practice address in Port Washington

They are 13 of the 228 NPPES records with a practice address in Port Washington, and 3,765 family medicine physician records in Wisconsin.

The 8 family medicine physician records with the nearest ZIP codes

  1. Cameron Blegen, M.D.Port Washington, WI 530741548791585
  2. Sara Bodenhamer, D.O.Port Washington, WI 530741639598584
  3. John Bonavia, MDPort Washington, WI 530741497716880
  4. Elizabeth DzwonczykPort Washington, WI 530741427411875
  5. Christopher Eernisse, D.O..Port Washington, WI 530741558742726
  6. Mark Fitzsimmons, MDPort Washington, WI 530741639284706
  7. Anna Kleyman, D.O.Port Washington, WI 530741720303670
  8. Michael Martella, D.O.Port Washington, WI 530741194849398

Common questions

What is William L. Hall, M.D.'s NPI number?

William L. Hall, M.D.'s National Provider Identifier (NPI) is 1992747091, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William L. Hall, M.D. located?

The NPPES record lists a practice address at 115 Sweetwater Blvd, Port Washington, WI, 53074. Phone: (920) 476-6400. Providers update this record themselves, so call before visiting.

How can I verify William L. Hall, M.D.'s license?

NPPES lists Wisconsin license number 36941, 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 William L. Hall, M.D. prescribe under Medicare Part D?

In 2024, William L. Hall, M.D. had 3,251 Medicare Part D claims for 385 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.