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Compare the published Medicare service mix of Allen K Chan, M.D. with clinicians in the same registry specialty: General Surgery · Vascular Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 333 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David J. Moore, MD

Vascular Surgery (CMS) · Panorama City, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
79%Service-mix similarityView profile →

Terrence John Fitzgibbons, M.D.

General Surgery · Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
77%Service-mix similarityView profile →

Maraya A. Altuwaijri, M.D.

General Surgery · Vascular Surgery (CMS) · Laguna Woods, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
76%Service-mix similarityView profile →

Jeffrey Warren Kronson, MD

General Surgery · Vascular Surgery (CMS) · Arcadia, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
75%Service-mix similarityView profile →

Edwin Nathaniel Kendrick, MD

Vascular Surgery (CMS) · Ontario, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
73%Service-mix similarityView profile →

Melinda Luz Aquino, M.D.

General Surgery · Vascular Surgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
70%Service-mix similarityView profile →

Omar Zahoor Tahir, MD

Vascular Surgery (CMS) · Apple Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
69%Service-mix similarityView profile →

Maged S. Mikhail, M.D.

Anesthesiology (CMS) · Tarzana, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
69%Service-mix similarityView profile →

Robert Allyn Duensing

Vascular Surgery (CMS) · Laguna Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
69%Service-mix similarityView profile →

Rex Chang Manayan, M.D.

General Surgery · Vascular Surgery (CMS) · Ontario, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
69%Service-mix similarityView profile →

Prince C Esiobu, MD

General Surgery · Vascular Surgery (CMS) · Redlands, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
68%Service-mix similarityView profile →

Sarah Pradka Lucas, M.D.

Vascular Surgery (CMS) · La Jolla, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
66%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.