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Compare the published Medicare service mix of Stephen John Kirwan, O.D. with clinicians in the same registry specialty: Optometrist.

NH · Exact areaEdit location

2024 published service data · 191 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lori Schafer Kirwan, O.D.

Optometrist · Wolfeboro Falls, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
96%Service-mix similarityView profile →

Erica Griffin, OD

Optometrist · Littleton, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
92%Service-mix similarityView profile →

Christopher Paul Udina, OD

Optometrist · Concord, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
92%Service-mix similarityView profile →

Lauren Mangano, OD

Optometrist · Nashua, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
92%Service-mix similarityView profile →

Emily Tuthill, OD

Optometrist · Keene, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
91%Service-mix similarityView profile →

Winnie Tseng, OD

Optometrist · Littleton, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
90%Service-mix similarityView profile →

Molly Maynes White, OD

Optometrist · Keene, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
90%Service-mix similarityView profile →

Philip Lee Sutherland, O.D.

Optometrist · Nashua, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
89%Service-mix similarityView profile →

Abbie Louise Martin, OD

Optometrist · Hooksett, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
89%Service-mix similarityView profile →

Laura Karle, OD

Optometrist · Littleton, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
89%Service-mix similarityView profile →

Radhika Demary, O.D.

Optometrist · Manchester, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Exam of the internal drainage system of eye (92020)
89%Service-mix similarityView profile →

Samuel Stack, OD

Optometrist · Littleton, NH

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
88%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.