HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Philip Andrew Knorr, M.D. with clinicians in the same registry specialty: Urology (CMS).

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Peter Noneng Bretan, M.D.

Urology (CMS) · Salinas, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
83%Service-mix similarityView profile →

Dawud Omar Lankford, M.D.

Urology (CMS) · Oakland, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
77%Service-mix similarityView profile →

Anvita Sinha, M.D.

Urology (CMS) · Modesto, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Herbert Ruckle, M.D.

Urology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Christopher K Tsai, MD

Urology (CMS) · Upland, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Gerald Heeko Yoon, M.D.

Urology (CMS) · Whittier, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
73%Service-mix similarityView profile →

Robin Lee Zagone, M.D.

Urology (CMS) · Crescent City, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
72%Service-mix similarityView profile →

David H.c. King, M.D.

General Surgery · Urology (CMS) · Los Gatos, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
72%Service-mix similarityView profile →

Miriam Locke, MD

Urology (CMS) · South Lake Tahoe, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
72%Service-mix similarityView profile →

Daniel James Greene, M.D.

Urology (CMS) · Santa Cruz, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
72%Service-mix similarityView profile →

Chih-Hsin C Wen, MD

Urology (CMS) · Oakland, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
70%Service-mix similarityView profile →

Jason Shung Lai, M.D.

Urology (CMS) · Whittier, CA

Shared published services
3 shared services · view billing descriptions
  • Urinalysis, manual test (81002)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
70%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.