NPPES file of Aug 9, 2026

Margaret Ann Rynkiewicz

Physician Assistant · Mount Pleasant, WI

Margaret Ann Rynkiewicz is a physician assistant with a practice address in Mount Pleasant, Wisconsin, and NPI 1073258604, issued on Apr 28, 2022. Check the license (Wisconsin 5873-23, as entered in NPPES) with the Wisconsin board that licenses this profession; 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
1073258604
Name
Margaret Ann Rynkiewicz
Primary taxonomy
Physician Assistant 363A00000X
License number
5873-23 WI
Self-reported in NPPES; status is on the state search
Practice location
13250 Washington Ave, Mount Pleasant, WI 53177
Phone
(262) 799-8700
Enumerated
Apr 28, 2022
Record last updated
Dec 29, 2025
Medicaid ID
100219345 WI
Medicare enrollment
Enrolled (PECOS I20221003001968); 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 13250 Washington Ave

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

  1. Osman Ahmedtaha, M.D.Internal Medicine Physician1598140105
  2. Kimberly Arbinger, PTPhysical Therapist1609983097
  3. Kelly Aschenbrenner, NPNurse Practitioner1548978687
  4. Diane Billmyer, P.A.Physician Assistant1891729224
  5. Talia Boyea, DPTPhysical Therapist1649162058
  6. Alissa Brown, CRNACertified Registered Nurse Anesthetist1790256774

Verify Margaret Ann Rynkiewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 5873-23
    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
Find the Wisconsin license search

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75% fewer Medicare Part D claims than the average physician assistant in 2024

211 Medicare Part D claims for 157 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 16 claims were for opioids.

  1. Margaret Rynkiewicz211
  2. Specialty average830

Most prescribed

  1. Amoxicillin-Clavulanate Potass24 claims
  2. Prednisone19 claims
  3. Albuterol Sulfate Hfa14 claims
  4. Cephalexin13 claims
  5. Hydrocodone-Acetaminophen13 claims
  6. Doxycycline Hyclate12 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): 91.7 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 score88.9
  2. Costout of 100 · 30%70.3
  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).

Bills Medicare through 2 group practices

  1. Aurora Medical Group, Inc.Mount Pleasant, WI
  2. Emergency Medicine Specialists SCWauwatosa, WI

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

Margaret Ann Rynkiewicz among 3,475 physician assistant records in Wisconsin

Margaret Ann Rynkiewicz is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 80% of them.

  • NPI issued2022 · 80% of these records are older, 14% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2022 · median 2016 among the 2,491 with a school on file
  • Record last updated2025 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

35 physician assistant records list a practice address in Mount Pleasant

They are 35 of the 710 NPPES records with a practice address in Mount Pleasant, and 3,475 physician assistant records in Wisconsin.

The 8 physician assistant records with the nearest ZIP codes

  1. Diane Billmyer, P.A.Mount Pleasant, WI 531771891729224
  2. Andrew Bromir, PA-CMt Pleasant, WI 531771437828936
  3. Megan Flynn, PA-CMount Pleasant, WI 531771235823824
  4. Pious JosephMount Pleasant, WI 531771952116618
  5. Margaret Kalb, PAMount Pleasant, WI 531771023991825
  6. Michelene Larrabee, PASturtevant, WI 531771487671236
  7. Abigail Lyon, PAMount Pleasant, WI 531771487493045
  8. Lauren Messier, PAMount Pleasant, WI 531771447602545

Common questions

What is Margaret Ann Rynkiewicz's NPI number?

Margaret Ann Rynkiewicz's National Provider Identifier (NPI) is 1073258604, issued on Apr 28, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Margaret Ann Rynkiewicz located?

The NPPES record lists a practice address at 13250 Washington Ave, Mount Pleasant, WI, 53177. Phone: (262) 799-8700. Providers update this record themselves, so call before visiting.

How can I verify Margaret Ann Rynkiewicz's license?

NPPES lists Wisconsin license number 5873-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Margaret Ann Rynkiewicz prescribe under Medicare Part D?

In 2024, Margaret Ann Rynkiewicz had 211 Medicare Part D claims for 157 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Margaret Ann Rynkiewicz's MIPS final score?

The 2023 MIPS final score is 91.7 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.