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Compare the published Medicare service mix of Matthew S Ward, M.D. with clinicians in the same registry specialty: Ophthalmology.

IOWA CITY, IA · Exact areaEdit location

2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Tyler S Quist, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
73%Service-mix similarityView profile →

Ryan John Diel, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
73%Service-mix similarityView profile →

Lorna Grant, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
69%Service-mix similarityView profile →

Chris E Watts, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
68%Service-mix similarityView profile →

Kanwal Singh Matharu, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
  • Established patient problem focused exam of visual system (92012)
63%Service-mix similarityView profile →

Jaclyn Marie Haugsdal, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
60%Service-mix similarityView profile →

Mark A Greiner, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
58%Service-mix similarityView profile →

Thomas A Oetting, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
  • Removal of cataract with insertion of prosthetic lens (66984)
57%Service-mix similarityView profile →

Benjamin Janson, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
54%Service-mix similarityView profile →

Marc Toeteberg-Harms, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
  • Ultrasound scan of cornea to determine thickness (76514)
53%Service-mix similarityView profile →

Erin A Boese, M.D.

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
  • Ultrasound scan of cornea to determine thickness (76514)
52%Service-mix similarityView profile →

Tyler Benjamin Stohler Risma, MD

Ophthalmology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Measurement of corneal curvature and depth of eye (92136)
  • Photography of the retina (92250)
51%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.