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Compare the published Medicare service mix of Cheri Leng, M.D. with clinicians in the same registry specialty: Ophthalmology.

OR · Exact areaEdit location

2024 published service data · 167 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Teresa Roleen Graham, MD

Ophthalmology · Klamath Falls, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
70%Service-mix similarityView profile →

Jason W Dimmig, M.D.

Ophthalmology · Bend, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
68%Service-mix similarityView profile →

Andrea V Gray, MD

Ophthalmology · Roseburg, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
68%Service-mix similarityView profile →

Alexander Willoughby

Ophthalmology · Roseburg, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
65%Service-mix similarityView profile →

Emily Katherine Armstrong, MD

Ophthalmology · Roseburg, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
64%Service-mix similarityView profile →

Matthew Guymon, D.O.

Ophthalmology · Grants Pass, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
63%Service-mix similarityView profile →

Blake Vance Acohido, M.D.

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Ultrasound scan to determine eye length and lens power (76519)
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

David Poulsen, MD

Ophthalmology · Hood River, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

Alan R Bengtzen, MD

Ophthalmology · Oregon City, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

Gregory Allen Richard, MD

Ophthalmology · Corvallis, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

William Flanary, M.D.

Ophthalmology · Oregon City, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient complete exam of visual system (92004)
60%Service-mix similarityView profile →

Kent A Karren, MD

Ophthalmology · Eugene, OR

Shared published services
3 shared services · view billing descriptions
  • Removal of cataract with insertion of prosthetic lens (66984)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
60%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.