Mohs surgery clinicians in Newport Beach, California

CMS lists 39 clinicians with a primary specialty of dermatology, micrographic dermatologic surgery, plastic and reconstructive surgery, otolaryngology, ophthalmology, general surgery, hand surgery, or surgical oncology who have billed Medicare for at least one removal of skin cancer procedure and practice in Newport Beach, California (details below).

Mohs surgery volume

Clinician	Removal of skin cancer procedures billed	Percentile rank
Andrew Breithaupt, MD	2,846	99%
Adam Rotunda, MD	1,761	97%
Dennis Nguyen, MD	1,399	94%
Dina Bierman, MD	948	85%
John Siebenlist, MD	785	78%
Soheil Simzar, MD	661	71%
Adam Aronson, MD	587	66%
Hung Ong, MD	557	64%
Edward Rohaly, MD	477	58%
Merrick Brodsky, MD	400	52%
Ann Vu, MD	375	49%
Julie Gladsjo, MD	344	46%
Michael Kassardjian, DO	303	43%
Young Kwak, MD	297	42%
Jonathan Baron, MD	265	39%
Payam Abrishami, MD	241	37%
Lynn Dimino, MD	220	35%
Joannie Sun, MD	211	34%
Christopher Wong, DO	197	33%
Kevin Belasco, DO	193	32%
Larisa Lehmer, MD	193	32%
Kiyanna Williams, MD	182	31%
Michelle Aszterbaum, MD	168	29%
Margaret Shannon, MD	131	25%
Robin Lewallen, MD	127	24%
Bobak Hedayati, MD	124	24%
Anh Dao Le, MD	102	21%
Donna Tran, DO	97	20%
Lisa Bukaty, MD	84	18%
Jacqueline Levin, DO	81	18%
Melissa Watcher, MD	60	16%
Zenovia Gabriel, MD	55	15%
Amy Reinstadler, MD	27	10%
Susan Cox, MD	22	9%
Leela Athalye, DO	1-10	8% or below
Arta Farshidi, MD	1-10	8% or below
Anne Marie McNeill, MD	1-10	8% or below
Neda Mehr, MD	1-10	8% or below
James Rosing, MD	1-10	8% or below

Sorted by the number of removal of skin cancer procedures billed to Medicare, highest first, not by quality or skill. CMS suppresses counts between 1 and 10 to protect patient privacy and publishes the range instead.

Understanding CMS Data

CMS's "Removal of skin cancer" category combines specific billing codes for Mohs micrographic surgery to calculate the number of times each clinician billed Medicare for "Removal of skin cancer." In Mohs surgery, the clinician removes a skin cancer in stages and examines each stage under a microscope during the same visit. CMS counts each billing code separately, so a single skin cancer that takes more than one stage can contribute more than once to this total. CMS reports removal of a skin cancer by standard excision, without microscopic examination during the visit, in a different category, so this total does not include it. CMS reports only procedures that clinicians billed to Original Medicare and Medicare Advantage. Therefore, CMS's procedure volume data does not include procedures that clinicians may have performed on patients who have other health care coverage (e.g., commercial insurance, self-pay, or the VA). Billing variation and coding errors can also affect CMS's data. Therefore, the number of procedures that CMS reports for a clinician may be higher or lower than the actual number of removal of skin cancer procedures a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of dermatology, micrographic dermatologic surgery, plastic and reconstructive surgery, otolaryngology, ophthalmology, general surgery, hand surgery, or surgical oncology (as reported to Medicare) are presented.

Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).