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Compare the published Medicare service mix of Reuben Kuan-Chun Chen, MD with clinicians in the same registry specialty: Physical Medicine And Rehabilitation (CMS).

TORRANCE, 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 · 40 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mike Trung-Hung Vu Tran, MD

Physical Medicine And Rehabilitation (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
88%Service-mix similarity~1.9 milesView profile →

Brian Jung Sunwoo, DO

Physical Medicine And Rehabilitation (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
58%Service-mix similarity~1.9 milesView profile →

John Zheng

Pain Management · Physical Medicine And Rehabilitation (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
44%Service-mix similarity~1.9 milesView profile →

Kamara Savage, M.D.

Physical Medicine And Rehabilitation (CMS) · Long Beach, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
39%Service-mix similarity~7.2 milesView profile →

Sherry Ellen Sonka-Maarek, MD

Physical Medicine And Rehabilitation (CMS) · San Pedro, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
34%Service-mix similarity~4.8 milesView profile →

Ramandeep Singh Gurai, M.D.

Interventional Pain Management · Physical Medicine And Rehabilitation (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
34%Service-mix similarity~1.9 milesView profile →

Bao Thai Nguyen, MD

Pain Management · Physical Medicine And Rehabilitation (CMS) · Hermosa Beach, CA

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

Venus Ramos, M.D.

Physical Medicine And Rehabilitation (CMS) · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
21%Service-mix similarity~7.2 milesView profile →

Jason Robert Koh, D.O.

Physical Medicine And Rehabilitation (CMS) · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
20%Service-mix similarity~7.2 milesView profile →

Huong-Anh Ngo Long, M.D.

Physical Medicine And Rehabilitation (CMS) · San Pedro, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
19%Service-mix similarity~4.8 milesView profile →

Joy Bhat, M.D.

Physical Medicine And Rehabilitation (CMS) · Manhattan Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
16%Service-mix similarity~7.4 milesView profile →

Fred H Batkin, M.D.

Physical Medicine And Rehabilitation (CMS) · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
13%Service-mix similarity~7.2 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.