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Compare the published Medicare service mix of Fidel E Castillo Diaz, MD with clinicians in the same registry specialty: Geriatric Medicine · Internal Medicine (CMS).

CHICAGO, IL · Exact areaEdit location

2024 published service data · 33 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Katya Yanira Cruz Madrid, M.D

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Hemoglobin a1c level (83036)
82%Service-mix similarityView profile →

Vania Leung

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Hemoglobin a1c level (83036)
76%Service-mix similarityView profile →

Ricardo Machado, MD

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Administration of influenza virus vaccine (G0008)
74%Service-mix similarityView profile →

Erika Danielle Hutz, DO

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Administration of influenza virus vaccine (G0008)
60%Service-mix similarityView profile →

Sara M Bradley, MD

General Practice · Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Hemoglobin a1c level (83036)
  • Administration of influenza virus vaccine (G0008)
55%Service-mix similarityView profile →

Alexandra Petrakos, MD

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Hemoglobin a1c level (83036)
54%Service-mix similarityView profile →

Eliana Geller

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Administration of influenza virus vaccine (G0008)
54%Service-mix similarityView profile →

Adeela Cheema, MD

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Administration of influenza virus vaccine (G0008)
53%Service-mix similarityView profile →

Chandni Hitesh Patel, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of influenza virus vaccine (G0008)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
47%Service-mix similarityView profile →

Donald A. Jurivich

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
40%Service-mix similarityView profile →

Ann C Allie, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of influenza virus vaccine (G0008)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
39%Service-mix similarityView profile →

Lee Lindquist, MD, MPH, MBA

Geriatric Medicine · Internal Medicine (CMS) · Chicago, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
37%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.