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Compare the published Medicare service mix of Maryam Zarei, M.D. with clinicians in the same registry specialty: Allergy/Immunology (CMS).

POWAY, CA · 100 milesEdit location
Within 100 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 · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mark Steven Sugar, M.D.

Allergy/Immunology (CMS) · Laguna Niguel, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test to measure the level of nitric oxide gas (95012)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
84%Service-mix similarity~54.0 milesView profile →

Roger Linh Nguyen, M.D

Allergy/Immunology · Internal Medicine (CMS) · Garden Grove, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
74%Service-mix similarity~77.1 milesView profile →

Christine Young Lee-Kim, D.O.

Allergy/Immunology · Internal Medicine (CMS) · Laguna Niguel, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure expiratory airflow and volume (94010)
73%Service-mix similarity~54.0 milesView profile →

Joyce Jeong-Mi Schoettler, M.D.

Allergy/Immunology (CMS) · Torrance, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure expiratory airflow and volume (94010)
71%Service-mix similarity~96.9 milesView profile →

Luis F. Saca, MD

Allergy/Immunology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • 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)
64%Service-mix similarity~75.7 milesView profile →

Warner W Carr, MD

Allergy/Immunology · Internal Medicine (CMS) · Laguna Niguel, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test to measure the level of nitric oxide gas (95012)
  • 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~54.0 milesView profile →

Shams Iqbal, MD

Allergy/Immunology · Internal Medicine (CMS) · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
53%Service-mix similarity~73.2 milesView profile →

Geeta Venkat, M.D.

Allergy/Immunology (CMS) · Mission Viejo, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
50%Service-mix similarity~57.2 milesView profile →

Stephen Curtis Wong, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Hacienda Heights, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
44%Service-mix similarity~88.9 milesView profile →

Bruce F Friedman, MD

Allergy/Immunology (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • 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)
39%Service-mix similarity~73.4 milesView profile →

Sarah Samimi Field, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Orange, 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)
35%Service-mix similarity~74.5 milesView profile →

Harold C Ochsner, M.D

Allergy/Immunology · Internal Medicine (CMS) · Long Beach, 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)
28%Service-mix similarity~88.9 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.