NPPES file of Aug 9, 2026

John Scott Maul, MD

Hematology & Oncology Physician · Grafton, WI

John Scott Maul, MD is a hematology & oncology physician with a practice address in Grafton, Wisconsin, and NPI 1326014382, issued on Feb 28, 2006. Check the license (Wisconsin 48107, 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
1326014382
Name
John Scott Maul
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License numbers
48107 WI
01094982A IN
Self-reported in NPPES; status is on the state search
Practice location
975 Port Washington RD, Grafton, WI 53024
Phone
(262) 857-5750
Enumerated
Feb 28, 2006
Record last updated
Feb 3, 2025
Medicaid ID
32836000 WI
Medicare enrollment
Enrolled (PECOS I20241216000694); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1999
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 975 Port Washington RD

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

  1. Hamid Afsari, D.O.Hospitalist Physician1053672048
  2. Muhammed Al-Fawakhiri, MDInternal Medicine Physician1942276613
  3. Beverly Altman, LMTMassage Therapist1447888789
  4. Claudia Altmann, MDInfectious Disease Physician1386691756
  5. Peter Andrew, AAAnesthesiologist Assistant1821704545
  6. Patrick AndrewsPhysical Therapist1689481962

Verify John Scott Maul in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 48107
    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.

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

2.4 times the Medicare Part D claims of the average hematology & oncology physician in 2024

2,080 Medicare Part D claims for 337 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 23 claims were for opioids.

  1. John Maul2,080
  2. Specialty average877

Most prescribed

  1. Anastrozole370 claims
  2. Letrozole201 claims
  3. Exemestane108 claims
  4. Acyclovir93 claims
  5. Tamoxifen Citrate91 claims
  6. Imatinib Mesylate68 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. Parkview Health System IncAlbion, IN

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

John Scott Maul among 295 hematology & oncology physician records in Wisconsin

John Scott Maul, MD is one of 295 hematology & oncology physician records with a practice address in Wisconsin. 82% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 59% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1999 · median 2004 among the 217 with a school on file
  • Record last updated2025 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 hematology & oncology physician records list a practice address in Grafton

They are 5 of the 459 NPPES records with a practice address in Grafton, and 295 hematology & oncology physician records in Wisconsin.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Justin Chau, M.D.Grafton, WI 530241871974154
  2. Maria GeorgenGrafton, WI 530241114488129
  3. Peter Polewski, MDGrafton, WI 530241659784940
  4. Thomas Zukowski, MDGrafton, WI 530241912989260
  5. Jacob Adashek, DOGermantown, WI 530221144780107
  6. Timothy Goggins, M.D.Germantown, WI 530221497890701
  7. Stephen Strother, M.D.Brookfield, WI 530451417063231
  8. Michael Delatorre, M.D.Menomonee Falls, WI 530511831211861

Common questions

What is John Scott Maul, MD's NPI number?

John Scott Maul, MD's National Provider Identifier (NPI) is 1326014382, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John Scott Maul, MD located?

The NPPES record lists a practice address at 975 Port Washington RD, Grafton, WI, 53024. Phone: (262) 857-5750. Providers update this record themselves, so call before visiting.

How can I verify John Scott Maul, MD's license?

NPPES lists Wisconsin license number 48107, 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 John Scott Maul, MD prescribe under Medicare Part D?

In 2024, John Scott Maul, MD had 2,080 Medicare Part D claims for 337 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.