HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Brian Mark Chesnie, M.D. with clinicians in the same registry specialty: Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS).

NEWPORT BEACH, CA · Exact areaEdit location

2024 published service data · 11 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lawrence Richard Vanmeter, MD

Internal Medicine (CMS) · Newport Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)
34%Service-mix similarityView profile →

Corinne S. Sugihara, M.D.

Obstetrics/Gynecology (CMS) · Newport Beach, CA

Shared published services
2 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)
30%Service-mix similarityView profile →

Ehab Nabil Hanna Mady, D.O.

Internal Medicine (CMS) · Newport 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
29%Service-mix similarityView profile →

David Porzio, M.D.

Internal Medicine (CMS) · Newport 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
28%Service-mix similarityView profile →

Catherine Chang, M.D.

Internal Medicine (CMS) · Newport 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
27%Service-mix similarityView profile →

Mark A Montano, MD

Neurology (CMS) · Newport 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
27%Service-mix similarityView profile →

John Michael Leary, M.D.

General Practice (CMS) · Newport 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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
17%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.