NPPES file of Aug 9, 2026

Robert Nicholaus Beyer, M.D.

Emergency Medicine Physician · Mequon, WI

Robert Nicholaus Beyer, M.D. is an emergency medicine physician with a practice address in Mequon, Wisconsin, and NPI 1508027947, issued on Jun 18, 2008. Check the license (Wisconsin 55539-20, 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
1508027947
Name
Robert Nicholaus Beyer
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
55539-20 WI
Self-reported in NPPES; status is on the state search
Practice location
13111 N Port Washington RD, Mequon, WI 53097
Phone
(414) 290-6720
Enumerated
Jun 18, 2008
Record last updated
Jul 29, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(414) 290-6755
Medicare enrollment
Enrolled (PECOS I20171228002025); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2008
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 13111 N Port Washington RD

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

  1. Beth Adams, PA-CPhysician Assistant1801237540
  2. Laura Alar, R.PH.Pharmacist1023358728
  3. Elizabeth Alfonsi, DPT, ATCPhysical Therapist1861705998
  4. Kathleen Andersen, MS, OTR/LOccupational Therapist1316958200
  5. Kassandra Bartelme, PHARM.D.Pharmacist1881823367
  6. Abbey BeckRegistered Dietitian1083251631

Verify Robert Nicholaus Beyer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 55539-20    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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22% more Medicare Part D claims than the average emergency medicine physician in 2024

276 Medicare Part D claims for 151 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Robert Beyer276
  2. Specialty average226

Most prescribed

  1. Cephalexin50 claims
  2. Ondansetron Odt46 claims
  3. Methylprednisolone27 claims
  4. Cyclobenzaprine Hcl21 claims
  5. Azithromycin17 claims
  6. Dicyclomine Hcl17 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. Empower St Josephs PLLCPhoenix, AZ

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

Emergency Medicine Physician providers in Wisconsin

There are 1,464 emergency medicine physician records in Wisconsin.

All 1,464 in Wisconsin → Every provider in Mequon →

Other emergency medicine physician records in Wisconsin

  1. Hythem Abad, DOPortage, WI1548799455
  2. Alan Abdulla, D.O.Waukesha, WI1508164419
  3. Krystyna Abdulla, DONew Berlin, WI1205146578
  4. Abdulmoniem Abdulmoniem, M.D.Elkhorn, WI1194175042
  5. Justine Abel, DOEau Claire, WI1861830507
  6. Michael Abernethy, MDMadison, WI1013972579
  7. Meinkeng Acha-Morfaw, MDMadison, WI1467934836
  8. Manish Acharya, M.D.Milwaukee, WI1437129715
  9. Axel AdamsMadison, WI1366905192
  10. Eric Adar, MDWauwatosa, WI1255325726

Common questions

What is Robert Nicholaus Beyer, M.D.'s NPI number?

Robert Nicholaus Beyer, M.D.'s National Provider Identifier (NPI) is 1508027947, issued on Jun 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Robert Nicholaus Beyer, M.D. located?

The NPPES record lists a practice address at 13111 N Port Washington RD, Mequon, WI, 53097. Phone: (414) 290-6720. Providers update this record themselves, so call before visiting.

How can I verify Robert Nicholaus Beyer, M.D.'s license?

NPPES lists Wisconsin license number 55539-20, 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 Robert Nicholaus Beyer, M.D. prescribe under Medicare Part D?

In 2024, Robert Nicholaus Beyer, M.D. had 276 Medicare Part D claims for 151 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.

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.