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Compare the published Medicare service mix of Karol Ruth O'neill, FNP with clinicians in the same registry specialty: Nurse Practitioner.

IL · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Katherine Jean Coulter, DNP,APN,FNP-BC,MSN

Nurse Practitioner · Rochelle, IL

Shared published services
3 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Admn sarscov2 vacc 1 dose (90480)
60%Service-mix similarityView profile →

Sarah Hussain, APN

Nurse Practitioner · Highland Park, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Admn sarscov2 vacc 1 dose (90480)
51%Service-mix similarityView profile →

Carolyn Marie Mayer, APRN, CNP

Nurse Practitioner · Orland Park, IL

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
45%Service-mix similarityView profile →

Abigail Elizabeth Schoeck, DNP

Nurse Practitioner · Moline, IL

Shared published services
3 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Admn sarscov2 vacc 1 dose (90480)
45%Service-mix similarityView profile →

Wendy D Dorworth, CFNP

Nurse Practitioner · Taylorville, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
40%Service-mix similarityView profile →

Carey Harris, NP

Nurse Practitioner · Bloomington, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Admn sarscov2 vacc 1 dose (90480)
39%Service-mix similarityView profile →

Athena Crowley, APRN, CNP

Nurse Practitioner · Chicago, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Admn sarscov2 vacc 1 dose (90480)
38%Service-mix similarityView profile →

Penny Attaway, DNP

Nurse Practitioner · Vandalia, IL

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
38%Service-mix similarityView profile →

Heidi M Mathew, APN

Nurse Practitioner · Wheaton, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
38%Service-mix similarityView profile →

Stacey Tebbe

Nurse Practitioner · Mattoon, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
37%Service-mix similarityView profile →

Ancy Zacharia, NP

Nurse Practitioner · Wheaton, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
34%Service-mix similarityView profile →

Aisha Richelle Brownlee, APRN, CNP

Nurse Practitioner · Palos Heights, IL

Shared published services
2 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
  • Insertion of needle into vein for collection of blood sample (36415)
34%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.