NPPES file of Aug 9, 2026

Katherine Lottermoser

Physician Assistant · Elgin, IL

Katherine Lottermoser is a physician assistant with a practice address in Elgin, Illinois, and NPI 1609461078, issued on Mar 7, 2021. Check the license 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
1609461078
Name
Katherine Lottermoser
Primary taxonomy
Physician Assistant 363A00000X
Practice location
1600 N Randall RD Ste 400, Elgin, IL 60123
Phone
(847) 381-8899
Enumerated
Mar 7, 2021
Record last updated
Sep 16, 2022
Medicare enrollment
Enrolled (PECOS I20221103001851); accepts Medicare assignment
Medical or professional school
Des Moines University Of Osteopathic Medicine And Health Sciences, 2022
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 1600 N Randall RD Ste 400

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

  1. Lauren BaruchPhysician Assistant1912255514
  2. Suzanne Birmingham, MDDermatopathology Physician1831693597
  3. Maureen Castaldi, PA-CPhysician Assistant1245587401
  4. Alexandra ChlebekPhysician Assistant1598492100
  5. Kimberly Clark, MMS, PA-CPhysician Assistant1720624166
  6. Monica CollettiPhysician Assistant1861154866

Verify Katherine Lottermoser in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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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48% fewer Medicare Part D claims than the average physician assistant in 2024

431 Medicare Part D claims for 222 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Katherine Lottermoser431
  2. Specialty average830

Most prescribed

  1. Ketoconazole94 claims
  2. Triamcinolone Acetonide75 claims
  3. Betamethasone Valerate31 claims
  4. Clobetasol Propionate27 claims
  5. Mupirocin25 claims
  6. Hydrocortisone22 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): 98.3 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. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%98.0
  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).

Bills Medicare through one group practice

  1. Derick Dermatology PLLCBarrington, IL

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

Katherine Lottermoser among 4,926 physician assistant records in Illinois

Katherine Lottermoser 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 2021, is newer than 66% of them.

  • NPI issued2021 · 66% of these records are older, 29% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2022 · 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).

89 physician assistant records list a practice address in Elgin

They are 89 of the 2,268 NPPES records with a practice address in Elgin, and 4,926 physician assistant records in Illinois.

The 8 physician assistant records with the nearest ZIP codes

  1. Trisha Atkins, P.A.Elgin, IL 601231306000765
  2. Carrie Fortman, PACElgin, IL 601231336211549
  3. Jessica Gavzer, PA-CElgin, IL 601231902085673
  4. Jason Graf, PA-CElgin, IL 601231942372537
  5. Tonia Hanson, PA-CElgin, IL 601231023251915
  6. Ashley Jansen, PA-CElgin, IL 601231306083985
  7. Thomas Lewandowski, PA-CElgin, IL 601231144328741
  8. Adam Mollsen, PA-CElgin, IL 601231639140338

Common questions

What is Katherine Lottermoser's NPI number?

Katherine Lottermoser's National Provider Identifier (NPI) is 1609461078, issued on Mar 7, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Lottermoser located?

The NPPES record lists a practice address at 1600 N Randall RD Ste 400, Elgin, IL, 60123. Phone: (847) 381-8899. Providers update this record themselves, so call before visiting.

How can I verify Katherine Lottermoser's license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Katherine Lottermoser prescribe under Medicare Part D?

In 2024, Katherine Lottermoser had 431 Medicare Part D claims for 222 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Katherine Lottermoser's MIPS final score?

The 2023 MIPS final score is 98.3 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.