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MISSION VIEJO EMERGENCY MEDICAL ASSOCIATES, INC.

PAC 7315090271 Physician group
EMERGENCY MEDICINE · MARINA DEL REY, CA · hospital-affiliated
Specialty EMERGENCY MEDICINE — most common member specialty (multi-specialty groups carry one label; see Methods)
Footprint Registered in MARINA DEL REY, CA · bills Medicare in 3 states (CA, MO, NY)
Scale 26 providers on the CMS registry roster · 19 codes billed (five-year data window) · 4,285 services (all billed codes, CY2024)
Medicare paid $415K · across all billed codes, CY2024, attributed & disclosed
Affiliation Hospital-affiliated — at least one member holds a hospital affiliation in the CMS registry
Contact (310) 118-5200 — CMS registry listing
CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · figures are attributed (single-group clinicians) and disclosed fee-for-service — a subset, never complete totals · group series shown over the most recent 5 years (rosters archived from 2019)
Group analytics

Who's billing in this group, plus the paid volume analytics · CY2024

Clinician makeup · CY2024
Physicians 22Advanced-practice 4Other clinicians 0= 26 clinicians billed · CY2024
By clinician headcount, CY2024. 'Physician' follows Medicare's §1861(r) definition (MD/DO, podiatry, optometry, dental medicine, chiropractic); facility and supplier enrollments are not counted as clinicians. These 26 are the clinicians who billed in CY2024 — a subset of the all-time registry roster shown on the group's identity card.

Billed 5 of the group's 19 codes this year, across 3 states (CY2024).

The full analytics for this group

Premium

The billed-volume rank, trajectory, and economics behind this group — computed on the same disclosed Medicare Part B data.

What Medicare paid this group in CY2024 is on the group's identity card — free, on every tier. Premium breaks that figure down per code and per service, and puts the volume behind it in national and peer context.

  • Per-code payment breakdown & avg $/service — dollars behind the volume
  • Beneficiary-episode volume — reach, not just service counts
  • Office vs. facility setting mix — place-of-service code split
  • National billed-volume rank — percentile, cohort & year disclosed
  • Size-peer billed-volume benchmark — vs. groups of similar size
  • Top-3 clinician share — how volume distributes
  • 5-year volume trend — direction across the window
  • Business mix — largest codes by payment

Rank and benchmark figures are billed-volume positions among peers, not measures of care. All figures attributed (single-group clinicians) and disclosed Medicare Part B fee-for-service.

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Medicare Part B FFS · CY2024 · as published by CMS

Provider volumes, all codes · CY2024

NPIProviderCredentialsTypeCitySt Services (all codes) locked column
1497706709 Seth, Sanjeev MD Emergency Medicine Los AngelesCA premium
1902862089 Ahn, Betty MD Emergency Medicine PasadenaCA premium
1710172689 Spencer, Nathaniel M.D. Emergency Medicine BrooklynNY premium
1194903450 Oskie, Seth MD Emergency Medicine TorranceCA premium
1770809337 Gates, Carolyn M.D. Emergency Medicine Los AngelesCA premium
1447420286 Bernheimer, David M.D. Emergency Medicine Los AngelesCA premium
1164435996 Mahmoud, Guisou Emergency Medicine EmeryvilleCA premium
1427548510 Sze, Kevin DO Emergency Medicine JoplinMO premium
1851437727 Sanchez, Jesse FNP-C, MSN Nurse Practitioner Los AngelesCA premium
1437438009 Abdi, Amin · member of 2 groups MD Emergency Medicine GlendaleCA premium
1174085260 Adams, Andrew · member of 2 groups MD Emergency Medicine MiamiFL premium
1164659959 Altman, Nicholas · member of 2 groups M.D. Emergency Medicine Los AngelesCA premium
1275589962 Cervantes, Jose · member of 2 groups MD Emergency Medicine Manhattan BeachCA premium
1023026242 Chang, Karen · member of 2 groups MD Hospitalist LynwoodCA premium
1891182374 Chang, Ivy · member of 2 groups M.D. Emergency Medicine GardenaCA premium
1609809045 Dorward, Jennifer · member of 3 groups N.P. Nurse Practitioner San DiegoCA premium
1083904940 Habib, Salma · member of 2 groups M.D. Emergency Medicine New YorkNY premium
1952622540 Jammal, Mansour · member of 3 groups M.D. Emergency Medicine Staten IslandNY premium
1720321078 Kokosinski, Edward · member of 2 groups D.O. Emergency Medicine Los AngelesCA premium
1427567106 Martino, Emily · member of 2 groups NP Nurse Practitioner ValenciaCA premium
1184287492 Mcmahon, Kathleen · member of 2 groups Emergency Medicine BethlehemPA premium
1588078448 Paulsen, Mark · member of 2 groups M.D. Emergency Medicine Laguna BeachCA premium
1528028933 Rhee, James · member of 4 groups MD Emergency Medicine Loma LindaCA premium
1144753955 Walsh, Taylor · member of 2 groups M.D. Emergency Medicine GardenaCA premium
1295781979 Wong, Patricia · member of 3 groups MD Emergency Medicine Los AngelesCA premium
1285827956 Yildirimer, Joan · member of 2 groups FNP Nurse Practitioner IrvineCA premium

Volumes are attributed to a group only for clinicians affiliated with exactly one group. Clinicians in several groups are listed ("member of N groups") but shown as "—" — their volume is not attributed to any single group. A "—" on a single-group clinician means CMS suppressed the figure (fewer than 11 beneficiaries), never zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average Medicare payment is the amount Medicare actually paid per service, weighted by service volume across office and facility settings. Where the roster is a single clinician, that clinician's service counts match the group's attributed volume shown on the ranked results, so they are shown here; the per-provider split across a larger roster is a premium feature. See Methods & Sources.