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Similar work.
More providers to explore.

Compare the published Medicare service mix of Cecinio Castillo Ronquillo, MD, PHD with clinicians in the same registry specialty: Ophthalmology.

COLORADO SPRINGS, CO · Exact areaEdit location

2024 published service data · 27 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ryan Mckay Rich, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
100%Service-mix similarityView profile →

Narine Viruni, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
92%Service-mix similarityView profile →

Matthew Liam O'sullivan, MD, PHD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
78%Service-mix similarityView profile →

John Mose Roberts, M.D.

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
64%Service-mix similarityView profile →

Mark Andrew Weisbrod, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
50%Service-mix similarityView profile →

Michael G. Haas, M.D.

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
43%Service-mix similarityView profile →

Kevin Michael May, M.D.

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
42%Service-mix similarityView profile →

Zachary Mortensen, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
41%Service-mix similarityView profile →

Scott M Smetana, M.D.

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
39%Service-mix similarityView profile →

Jason Allen Noble, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
38%Service-mix similarityView profile →

Sheron Buckland Marshall, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
37%Service-mix similarityView profile →

James Harold Burden, MD

Ophthalmology · Colorado Springs, CO

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
36%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.