NPPES file of Aug 9, 2026

Adam Koss

Physician Assistant · Buffalo Grove, IL

Adam Koss is a physician assistant with a practice address in Buffalo Grove, Illinois, and NPI 1427694124, issued on Nov 18, 2019. Check the license (Illinois 007425, 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
1427694124
Name
Adam Koss
Primary taxonomy
Physician Assistant 363A00000X
License number
007425 IL
Self-reported in NPPES; status is on the state search
Practice location
2948 Whispering Oaks Dr, Buffalo Grove, IL 60089
Phone
(630) 404-1477
Enumerated
Nov 18, 2019
Record last updated
Nov 18, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200413003302); 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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Verify Adam Koss 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 007425
    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

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69% fewer Medicare Part D claims than the average physician assistant in 2024

258 Medicare Part D claims for 119 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 119 claims were for opioids.

  1. Adam Koss258
  2. Specialty average830

Most prescribed

  1. Hydrocodone-Acetaminophen74 claims
  2. Cephalexin45 claims
  3. Ondansetron Odt19 claims
  4. Tramadol Hcl18 claims
  5. Ondansetron Hcl17 claims
  6. Amoxicillin-Clavulanate Potass12 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): 72.7 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 score71.8
  2. Costout of 100 · 30%53.0
  3. Promoting interoperabilityout of 100 · 25%81.0
  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: $141.94

7 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales 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. Adam Koss$141.94
  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. Illinois Bone And Joint Institute, LLCPark Ridge, IL

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

Adam Koss among 4,926 physician assistant records in Illinois

Adam Koss 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 2019, is newer than 53% of them.

  • NPI issued2019 · 53% of these records are older, 42% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2019 · median 2019 among the 3,407 with a school on file
  • Record last updated2019 · 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. Rebecca Griesemer, PA-CBuffalo Grove, IL 600891134222425
  6. Yesenia GuzmanBuffalo Grove, IL 600891043955818
  7. Kristin Hornaday, PA-CBuffalo Grove, IL 600891154717569
  8. Mireya Ledesma, PA-CBuffalo Grove, IL 600891063530368

Common questions

What is Adam Koss's NPI number?

Adam Koss's National Provider Identifier (NPI) is 1427694124, issued on Nov 18, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Adam Koss located?

The NPPES record lists a practice address at 2948 Whispering Oaks Dr, Buffalo Grove, IL, 60089. Phone: (630) 404-1477. Providers update this record themselves, so call before visiting.

How can I verify Adam Koss's license?

NPPES lists Illinois license number 007425, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Adam Koss prescribe under Medicare Part D?

In 2024, Adam Koss had 258 Medicare Part D claims for 119 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Adam Koss's MIPS final score?

The 2023 MIPS final score is 72.7 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.