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Compare the published Medicare service mix of Simon B Rayhanabad, MD with clinicians in the same registry specialty: General Surgery · Vascular Surgery (CMS).

LOS ALAMITOS, 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 · 6 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Son Duong, M.D.

Vascular Surgery (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
70%Service-mix similarity~9.1 milesView profile →

Joseph Famil Vardayo, MD FACS

General Surgery · Vascular Surgery (CMS) · Long Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
65%Service-mix similarity~6.9 milesView profile →

Ankur Gupta, M.D.

General Surgery · Vascular Surgery (CMS) · Long Beach, CA

Shared published services
3 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
39%Service-mix similarity~6.9 milesView profile →

Steven Paris Posner, M.D.

Vascular Surgery (CMS) · Bellflower, CA

Shared published services
3 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)
  • 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
33%Service-mix similarity~7.0 milesView profile →

Hamed Taheri, M.D.

General Surgery · Vascular Surgery (CMS) · Long Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
  • Ultrasound of leg arteries or artery grafts (93925)
28%Service-mix similarity~6.8 milesView profile →

Rajesh Lal, M.D.

Specialty details in registry · Huntington Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit with review by radiologist (36901)
7%Service-mix similarity~6.5 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.