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Compare the published Medicare service mix of Andrew Tannenbaum, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

HARVARD, IL · 25 milesEdit location
Within 25 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 · 9 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Paul P Heideman, M.D.

Diagnostic Radiology (CMS) · Burlington, WI

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)
  • Ultrasonic guidance for blood vessel access (76937)
  • Ultrasound of leg arteries or artery grafts (93925)
40%Service-mix similarity~23.8 milesView profile →

Feraz Najmi Rahman, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Crystal Lake, IL

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
39%Service-mix similarity~19.2 milesView profile →

Jay Pravin Patel, MD

Interventional Radiology · Pathology (CMS) · Mchenry, 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)
  • Ultrasonic guidance for blood vessel access (76937)
  • Ultrasound of leg arteries or artery grafts (93925)
37%Service-mix similarity~17.0 milesView profile →

Rajesh Kumar Kakarla, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Rockford, IL

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
36%Service-mix similarity~21.3 milesView profile →

David Bradley Kozlov, M.D.

Diagnostic Radiology (CMS) · Belvidere, 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)
  • Ultrasonic guidance for blood vessel access (76937)
  • Ultrasound scan of abdominal aorta (76706)
24%Service-mix similarity~16.9 milesView profile →

Srinivasan V Narayanan, MD, PHD

Diagnostic Radiology (CMS) · Mchenry, 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)
  • Ultrasonic guidance for blood vessel access (76937)
  • Ultrasound of leg arteries or artery grafts (93925)
24%Service-mix similarity~17.0 milesView profile →

Shadab Ali Khan, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Rockford, 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)
  • Ultrasonic guidance for blood vessel access (76937)
  • Ultrasound scan of abdominal aorta (76706)
22%Service-mix similarity~24.4 milesView profile →

Ross Alexander Ogilvie, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Rockford, IL

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
20%Service-mix similarity~24.4 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.