NPPES file of Aug 9, 2026

Rebecca A. Griesemer, PA-C

Physician Assistant · Buffalo Grove, IL

Rebecca A. Griesemer, PA-C is a physician assistant with a practice address in Buffalo Grove, Illinois, and NPI 1134222425, issued on Sep 5, 2006. Check the license (Illinois 085-002393, as entered in NPPES) with the Illinois 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
1134222425
Name
Rebecca A. Griesemer
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
085-002393 IL
Self-reported in NPPES; status is on the state search
Practice location
15 S Mchenry RD, Buffalo Grove, IL 60089
Phone
(847) 618-0351
Enumerated
Sep 5, 2006
Record last updated
Mar 16, 2022
Fax
(847) 618-0766
Medicare enrollment
Enrolled (PECOS I20061026000084); 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 15 S Mchenry RD

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

  1. William AquinoPhysical Therapist1427547181
  2. Reena Blesson, APN-CNPNurse Practitioner1619221900
  3. Taylor Burke, APN-CNPNurse Practitioner1982338844
  4. Daniel Cacioppo, MDNeurology Physician1083662613
  5. Heidi Chatham, M.DFamily Medicine Physician1659509834
  6. Caitlin Daab, MDFamily Medicine Physician1326781394

Verify Rebecca A. Griesemer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 085-002393
    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 Illinois 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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39% fewer Medicare Part D claims than the average physician assistant in 2024

503 Medicare Part D claims for 284 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Rebecca Griesemer503
  2. Specialty average830

Most prescribed

  1. Methylprednisolone43 claims
  2. Nitrofurantoin Mono-Macro17 claims
  3. Meloxicam16 claims
  4. Rosuvastatin Calcium15 claims
  5. Cefadroxil13 claims
  6. Amoxicillin-Clavulanate Potass11 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 MIPS final score for 2023 (Medicare payment program): 89.7 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score79.3
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $44.61

1 payment: food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Rebecca Griesemer$44.61
  2. Specialty average$841.65

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. Endeavor Health Medical GroupBuffalo Grove, IL

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

Rebecca A. Griesemer among 4,926 physician assistant records in Illinois

Rebecca A. Griesemer, PA-C is one of 4,926 physician assistant records with a practice address in Illinois. 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 88% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2004 · median 2019 among the 3,407 with a school on file
  • Record last updated2022 · 35% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 physician assistant records list a practice address in Buffalo Grove

They are 12 of the 868 NPPES records with a practice address in Buffalo Grove, and 4,926 physician assistant records in Illinois.

The 8 physician assistant records with the nearest ZIP codes

  1. Kristin Bean, PA-CBuffalo Grove, IL 600891386099091
  2. Amy Brownlee, PA CBuffalo Grove, IL 600891104993401
  3. Quyen Bui, PA-CBuffalo Grove, IL 600891790104081
  4. Molly Delzer, PA-CBuffalo Grove, IL 600891417538745
  5. Yesenia GuzmanBuffalo Grove, IL 600891043955818
  6. Kristin Hornaday, PA-CBuffalo Grove, IL 600891154717569
  7. Adam KossBuffalo Grove, IL 600891427694124
  8. Mireya Ledesma, PA-CBuffalo Grove, IL 600891063530368

Common questions

What is Rebecca A. Griesemer, PA-C's NPI number?

Rebecca A. Griesemer, PA-C's National Provider Identifier (NPI) is 1134222425, issued on Sep 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Rebecca A. Griesemer, PA-C located?

The NPPES record lists a practice address at 15 S Mchenry RD, Buffalo Grove, IL, 60089. Phone: (847) 618-0351. Providers update this record themselves, so call before visiting.

How can I verify Rebecca A. Griesemer, PA-C's license?

NPPES lists Illinois license number 085-002393, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Rebecca A. Griesemer, PA-C prescribe under Medicare Part D?

In 2024, Rebecca A. Griesemer, PA-C had 503 Medicare Part D claims for 284 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Rebecca A. Griesemer, PA-C's MIPS final score?

The 2023 MIPS final score is 89.7 of 100. 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.