NPPES file of Aug 9, 2026

David Bartos Merkow, MD

Orthopaedic Hand Surgery Physician · Pewaukee, WI

David Bartos Merkow, MD is an orthopaedic hand surgery physician with a practice address in Pewaukee, Wisconsin, and NPI 1265939532, issued on Apr 12, 2018. Check the license (Wisconsin 83969, 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
1265939532
Name
David Bartos Merkow
Credential
MD
Primary taxonomy
Orthopaedic Hand Surgery Physician 207XS0106X
License number
83969 WI
Self-reported in NPPES; status is on the state search
Practice location
N15W28300 Golf RD, Pewaukee, WI 53072
Phone
(262) 303-5055
Enumerated
Apr 12, 2018
Record last updated
Jan 27, 2026
Fax
(262) 303-5057
Medicare enrollment
Enrolled (PECOS I20240717004654); accepts Medicare assignment
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 N15W28300 Golf RD

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

  1. Laith Al-Shihabi, M.D.Orthopaedic Hand Surgery Physician1861713265
  2. Thomas AndersonPhysician Assistant1952718348
  3. Steven Baugrud, PAPhysician Assistant1629084140
  4. James Bell, PAPhysician Assistant1245559434
  5. Matthew Blievernicht, PTPhysical Therapist1760640213
  6. Kyle Blindauer, PA-CPhysician Assistant1700343753

Verify David Bartos Merkow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 83969
    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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69% fewer Medicare Part D claims than the average orthopaedic hand surgery physician in 2024

57 Medicare Part D claims for 42 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 31 claims were for opioids.

  1. David Merkow57
  2. Specialty average186

Most prescribed

  1. Tramadol Hcl15 claims
  2. Meloxicam12 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.

Industry payments in 2024: $1,384.18

23 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 1,819 providers of this specialty with any payment received $5,529.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Merkow$1,384.18
  2. Specialty average$5,529.86

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

Bills Medicare through one group practice

  1. Orthopaedic Associates OF Wisconsin SCPewaukee, WI

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

David Bartos Merkow among 56 orthopaedic hand surgery physician records in Wisconsin

David Bartos Merkow, MD is one of 56 orthopaedic hand surgery physician records with a practice address in Wisconsin. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 91% of them.

  • NPI issued2018 · 91% of these records are older, 7% newer
  • In a Medicare fileYes · 91% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2018 · median 2004 among the 44 with a school on file
  • Record last updated2026 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0106X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Hand Surgery Physician providers in Wisconsin

There are 56 orthopaedic hand surgery physician records in Wisconsin.

The 8 orthopaedic hand surgery physician records with the nearest ZIP codes

  1. Laith Al-Shihabi, M.D.Pewaukee, WI 530721861713265
  2. Jeffrey Coppage, M.D.Pewaukee, WI 530721528382413
  3. James Foley, M.D.Pewaukee, WI 530721659467132
  4. John Siegert, M.D.Mequon, WI 530921013989185
  5. Greg Watchmaker, MDMequon, WI 530921275564221
  6. Eric Gaenslen, M.D.Grafton, WI 530241982633079
  7. Dennis Andersen, M.D.Franklin, WI 531321831123249
  8. David Clark, MDFranklin, WI 531321801958434

Common questions

What is David Bartos Merkow, MD's NPI number?

David Bartos Merkow, MD's National Provider Identifier (NPI) is 1265939532, issued on Apr 12, 2018. An NPI identifies a provider in billing; it is not a license.

Where is David Bartos Merkow, MD located?

The NPPES record lists a practice address at N15W28300 Golf RD, Pewaukee, WI, 53072. Phone: (262) 303-5055. Providers update this record themselves, so call before visiting.

How can I verify David Bartos Merkow, MD's license?

NPPES lists Wisconsin license number 83969, 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 David Bartos Merkow, MD prescribe under Medicare Part D?

In 2024, David Bartos Merkow, MD had 57 Medicare Part D claims for 42 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. 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.