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Compare the published Medicare service mix of Michael I Nahhas, M.D. with clinicians in the same registry specialty: Neurology (CMS).

HOUSTON, TX · Exact areaEdit location

2024 published service data · 26 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Haris Kamal, M.D.

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
  • Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)
63%Service-mix similarityView profile →

Robert W Regenhardt, M.D.

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
  • Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)
54%Service-mix similarityView profile →

Sunil A Sheth, M.D.

Neurology · Vascular Surgery (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
45%Service-mix similarityView profile →

Mohammad El-Ghanem, MD

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
37%Service-mix similarityView profile →

Eric M Bershad, MD

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
24%Service-mix similarityView profile →

Aidan Idrees Azher, M.D.

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
17%Service-mix similarityView profile →

Maria Adnan Parekh, MD

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
16%Service-mix similarityView profile →

Khalid Khalid

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
14%Service-mix similarityView profile →

Tanu Garg, M.D.

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
14%Service-mix similarityView profile →

Rajan Ramji Gadhia, M.D.

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
11%Service-mix similarityView profile →

Dimitre Mirtchev, M.D.

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
11%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.