NPPES file of Aug 9, 2026

William T. Pennington, MD

Orthopaedic Surgery Physician · Franklin, WI

William T. Pennington, MD is an orthopaedic surgery physician with a practice address in Franklin, Wisconsin, and NPI 1114021110, issued on Sep 11, 2006. Check the license (Wisconsin 37451, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114021110
Name
William T. Pennington
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
37451 WI
Self-reported in NPPES; status is on the state search
Practice location
3111 W Rawson Ave, Franklin, WI 53132
Phone
(414) 325-4320
Enumerated
Sep 11, 2006
Record last updated
Feb 25, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(414) 761-1921
Medicaid ID
32508500 WI
Medicare enrollment
Enrolled (PECOS I20061221000479); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1994
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 3111 W Rawson Ave

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

  1. Brian Bartz, PA-CPhysician Assistant1699885392
  2. Jeffrey Beyer, PAPhysician Assistant1174627178
  3. Laura BurgmeierNurse Practitioner1427766781
  4. Jamie Edwards, MDSports Medicine (Orthopaedic Surgery) Physician1831293836
  5. Elizabeth Ganske, P.T.Physical Therapist1346554821
  6. Daniel Guehlstorf, MDOrthopaedic Surgery Physician1457456535

Verify William T. Pennington in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 37451
    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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81% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

67 Medicare Part D claims for 49 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. William Pennington67
  2. Specialty average346

Most prescribed

  1. Amoxicillin55 claims
  2. Clindamycin Hcl11 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 81.6 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 score78.4
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  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).

Industry payments in 2024: $13,248.15

5 payments; by number, the most common kind was royalty or license; the largest payer was Arthrex, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Pennington$13,248
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Advantage Physical Therapy And Sports Rehab, LLCHales Corners, WI
  2. Orthopedic Surgeons OF Wisconsin SCFranklin, WI

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

William T. Pennington among 656 orthopaedic surgery physician records in Wisconsin

William T. Pennington, MD is one of 656 orthopaedic surgery 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. Its NPI, issued in 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 41% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1994 · median 2006 among the 401 with a school on file
  • Record last updated2020 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Wisconsin

There are 656 orthopaedic surgery physician records in Wisconsin.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Todd Barnhardt, M.D.Franklin, WI 531321669402731
  2. Daniel Guehlstorf, MDFranklin, WI 531321457456535
  3. Alan Hyman, M.D.Kenosha, WI 531421750387684
  4. Benjamin Lasee, M.D.Kenosha, WI 531421942526330
  5. Jonathan Main, MDKenosha, WI 531421235110255
  6. Thomas Werbie, M.D.Kenosha, WI 531421922030030
  7. James Shapiro, MDKenosha, WI 531431982685905
  8. Aftab Ansari, MDSCKenosha, WI 531441124182068

Common questions

What is William T. Pennington, MD's NPI number?

William T. Pennington, MD's National Provider Identifier (NPI) is 1114021110, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William T. Pennington, MD located?

The NPPES record lists a practice address at 3111 W Rawson Ave, Franklin, WI, 53132. Phone: (414) 325-4320. Providers update this record themselves, so call before visiting.

How can I verify William T. Pennington, MD's license?

NPPES lists Wisconsin license number 37451, 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 T. Pennington, MD prescribe under Medicare Part D?

In 2024, William T. Pennington, MD had 67 Medicare Part D claims for 49 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is William T. Pennington, MD's MIPS final score?

The 2023 MIPS final score is 81.6 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.