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Compare the published Medicare service mix of Douglas D Zhang, M.D. with clinicians in the same registry specialty: General Practice (CMS).

CA · Exact areaEdit location

2024 published service data · 80 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Susan Behnawa, M.D.

Family Practice · Geriatric Medicine (CMS) · Menifee, CA

Shared published services
3 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)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
56%Service-mix similarityView profile →

Raymond Chan, M.D.

Family Practice (CMS) · Colton, CA

Shared published services
3 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)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
54%Service-mix similarityView profile →

Amiksha S Patel, M.D.

Family Practice · Geriatric Medicine (CMS) · Riverside, CA

Shared published services
3 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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
52%Service-mix similarityView profile →

Elham Arghami, M.D

Family Practice · Geriatric Medicine (CMS) · Irvine, CA

Shared published services
3 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)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
49%Service-mix similarityView profile →

Carolyn L. Kaloostian, MD

Family Practice · Geriatric Medicine (CMS) · Los Angeles, CA

Shared published services
3 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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
47%Service-mix similarityView profile →

Michael David Fox, MD

Specialty details in registry · Mill Valley, CA

Shared published services
2 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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
46%Service-mix similarityView profile →

Hamid Eskandari, MD

Family Practice · Geriatric Medicine (CMS) · Foothill Ranch, CA

Shared published services
3 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)
  • Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
46%Service-mix similarityView profile →

Edna Elvira Biddy, M.D.

Geriatric Medicine (CMS) · Orange, CA

Shared published services
3 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)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
46%Service-mix similarityView profile →

Joel Daniel Doughten, MD

Specialty details in registry · Riverside, CA

Shared published services
3 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)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
45%Service-mix similarityView profile →

Faraz Raza Zaidi, M.D.

Family Practice · Geriatric Medicine (CMS) · Carmichael, CA

Shared published services
3 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)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
45%Service-mix similarityView profile →

Basil Colin Hamblin, MD

Family Practice · Geriatric Medicine · Hospice/Palliative Care (CMS) · Point Reyes Station, CA

Shared published services
3 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)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
45%Service-mix similarityView profile →

Michael J Maguire, D.O.

Family Practice · Geriatric Medicine (CMS) · Whittier, CA

Shared published services
3 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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
45%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.