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Compare the published Medicare service mix of Luis Jeronimo Castro, M.D. with clinicians in the same registry specialty: Cardiac Surgery · Thoracic Surgery (CMS).

REDWOOD CITY, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 25 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Pei H Tsau, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Coronary artery bypass using artery graft, 1 graft (33533)
55%Service-mix similarity~6.3 milesView profile →

Tomomi Oka, MD

Cardiac Surgery (CMS) · Burlingame, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Coronary artery bypass using artery graft, 1 graft (33533)
51%Service-mix similarity~9.5 milesView profile →

Maria Elizabeth Currie, MD, PHD

Cardiac Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
49%Service-mix similarity~4.7 milesView profile →

Yi-Ping Joseph Woo, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Harvest of vein using an endoscope (33508)
  • Replacement of aortic valve on heart-lung machine (33405)
45%Service-mix similarity~6.0 milesView profile →

Irmina Anna Elliott, MD

General Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
44%Service-mix similarity~4.7 milesView profile →

John Ward Macarthur, M.D.

General Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Harvest of vein using an endoscope (33508)
  • Replacement of mitral valve on heart-lung machine (33430)
43%Service-mix similarity~4.7 milesView profile →

Leah Monique Backhus, M.D.

General Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
41%Service-mix similarity~4.7 milesView profile →

Joseph Ben Shrager, MD

General Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
40%Service-mix similarity~4.7 milesView profile →

Douglas Zhi-Wen Liou, M.D.

Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
40%Service-mix similarity~4.7 milesView profile →

Jack H Boyd, MD

General Surgery · Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
3 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using vein or artery graft, 2 grafts (33518)
36%Service-mix similarity~4.7 milesView profile →

Tobias Deuse, M.D.

Cardiac Surgery · Cardiovascular Disease (Cardiology) · Thoracic Surgery (CMS) · Stanford, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
28%Service-mix similarity~6.0 milesView profile →

Vincent A Gaudiani, MD

Thoracic Surgery (CMS) · Palo Alto, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
28%Service-mix similarity~4.7 milesView 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 approximate distance 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.