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Compare the published Medicare service mix of Karen Elisabeth Deffenbacher, M.D., PH.D. with clinicians in the same registry specialty: Cardiovascular Disease (Cardiology) · Internal Medicine · Interventional Cardiology (CMS).

HARVEY, 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 · 36 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jonathan Meyer, M.D.

Interventional Cardiology (CMS) · Munster, IN

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
68%Service-mix similarity~8.8 milesView profile →

Thomas N Levin, M.D.

Cardiovascular Disease (Cardiology) · Interventional Cardiology (CMS) · Oak Lawn, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
67%Service-mix similarity~8.8 milesView profile →

Abdulrahman Dia, MD

Cardiovascular Disease (Cardiology) (CMS) · Oak Lawn, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
65%Service-mix similarity~8.8 milesView profile →

Adham M Karim, MD

Internal Medicine · Interventional Cardiology (CMS) · Oak Lawn, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
65%Service-mix similarity~8.8 milesView profile →

Asad John Torabi, MD

Cardiovascular Disease (Cardiology) · Internal Medicine · Interventional Cardiology (CMS) · Munster, IN

Shared published services
3 shared services · view billing descriptions
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (93458)
63%Service-mix similarity~8.8 milesView profile →

Dean Michael Ferrera, D.O.

Interventional Cardiology (CMS) · East Chicago, IN

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
62%Service-mix similarity~10.0 milesView profile →

Ibrahim Kassas, MD

Cardiovascular Disease (Cardiology) (CMS) · Evergreen Park, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
62%Service-mix similarity~8.1 milesView profile →

Tariq Hameed, MD

Cardiovascular Disease (Cardiology) · Internal Medicine · Interventional Cardiology (CMS) · Munster, IN

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
61%Service-mix similarity~8.8 milesView profile →

Tarek Mohamad Ahdab, MD, FACC

Cardiovascular Disease (Cardiology) · General Practice · Internal Medicine (CMS) · Palos Heights, IL

Shared published services
3 shared services · view billing descriptions
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (93458)
59%Service-mix similarity~8.0 milesView profile →

Adedotun A. Ogunsua, M.D.

Cardiovascular Disease (Cardiology) · Interventional Cardiology (CMS) · Evergreen Park, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
57%Service-mix similarity~8.1 milesView profile →

Shadi Halabi, MD, MPH

Interventional Cardiology (CMS) · Munster, IN

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
53%Service-mix similarity~8.8 milesView profile →

Marlon Elliott Everett, MD

Cardiovascular Disease (Cardiology) · Interventional Cardiology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
52%Service-mix similarity~9.4 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.