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Compare the published Medicare service mix of John O'connell, DO with clinicians in the same registry specialty: Family Medicine.

ROLLING MEADOWS, IL · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 180 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Roderick Sarsaba, NP

Family Medicine · Addison, IL

Shared published services
2 shared services · view billing descriptions
  • Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
38%Service-mix similarity~9.7 milesView profile →

Afshan Hameeduddin, MD

Family Medicine · Schaumburg, IL

Shared published services
2 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
28%Service-mix similarity~5.9 milesView profile →

Sonia Abraham, MD

Family Medicine · Hoffman Estates, IL

Shared published services
2 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
27%Service-mix similarity~4.8 milesView profile →

Lily Phouikham, D.O.

Family Medicine · Hoffman Estates, IL

Shared published services
1 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
16%Service-mix similarity~4.8 milesView profile →

Shervin Dorodi, MD

Family Medicine · Des Plaines, IL

Shared published services
1 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
11%Service-mix similarity~7.1 milesView profile →

Alexander V. Potermin, M.D.

Family Medicine · Buffalo Grove, IL

Shared published services
1 shared services · view billing descriptions
  • Physician supervision of a patient under a medicare-approved hospice (patient not present) requiring complex and multidisciplinary care modalities involving regular physician development and/or revision of care plans, review of subsequent reports of patien (G0182)
10%Service-mix similarity~6.6 milesView profile →

Orazio Bartolomeo, MD

Family Medicine · Barrington, IL

Shared published services
1 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
10%Service-mix similarity~8.6 milesView profile →

Richard Allen Margolin, D.O.

Family Medicine · Lincolnshire, IL

Shared published services
1 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
9%Service-mix similarity~9.8 milesView 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 approximate distance 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.